1
|
Youn SW, Cho CG. Transition-metal-catalyzed ortho-selective C-H functionalization reactions of free phenols. Org Biomol Chem 2021; 19:5028-5047. [PMID: 34027964 DOI: 10.1039/d1ob00506e] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Phenols are important readily available chemical feedstocks and versatile synthetic building blocks for diverse synthetic transformations. Their motifs are prevalent in a diverse array of natural products, pharmaceuticals, functional materials, and privileged chiral ligands. Consequently, the development of facile and direct site-selective C-H bond functionalization of free phenols is of great importance and considerable interest to both industry and academic research. Over the past decades, transition-metal-catalyzed C-H bond functionalization has become as a powerful synthetic tool in organic synthesis. In this review, we provide a brief overview of recent progress in the transition-metal-catalyzed direct ortho-selective C-H functionalization of free phenols.
Collapse
Affiliation(s)
- So Won Youn
- Center for New Directions in Organic Synthesis, Department of Chemistry and Research Institute for Natural Sciences, Hanyang University, Seoul 04763, Korea.
| | - Cheon-Gyu Cho
- Center for New Directions in Organic Synthesis, Department of Chemistry and Research Institute for Natural Sciences, Hanyang University, Seoul 04763, Korea.
| |
Collapse
|
2
|
Ouyang L, Lin Z, Li S, Chen B, Liu J, Shi WJ, Zheng L. Synthesis of functionalized diarylbenzofurans via Ru-catalyzed C–H activation and cyclization under air: rapid access to the polycyclic scaffold of diptoindonesin G. Org Chem Front 2021. [DOI: 10.1039/d1qo01242h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
A method was developed for rapid assembly of 2,3-diarylbenzofuran-4-carboxylic acids from m-hydroxybenzoic acids and alkynes via Ru-catalyzed C–H alkenylation and cyclization, which was successfully applied for total synthesis of diptoindonesin G.
Collapse
Affiliation(s)
- Lufeng Ouyang
- School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou, 510006, P. R. China
| | - Zhigeng Lin
- School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou, 510006, P. R. China
| | - Shiqi Li
- School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou, 510006, P. R. China
| | - Baoyin Chen
- School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou, 510006, P. R. China
| | - Jidan Liu
- School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou, 510006, P. R. China
| | - Wen-Jing Shi
- School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou, 510006, P. R. China
| | - Liyao Zheng
- School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou, 510006, P. R. China
| |
Collapse
|
3
|
Ghosh K, Rit RK, Shankar M, Mukherjee K, Sahoo AK. Directing Group Assisted Unsymmetrical Multiple Functionalization of Arene C-H Bonds. CHEM REC 2020; 20:1017-1042. [PMID: 32779389 DOI: 10.1002/tcr.202000063] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2020] [Revised: 07/09/2020] [Accepted: 07/10/2020] [Indexed: 12/28/2022]
Abstract
Multiple C-H bond functionalizations promptly install diverse groups on the molecular framework and consequently fabricate complex molecular entities. This review briefly surveys the conceptual development of directing group assisted unsymmetrical multiple functionalization of arene C(sp2 )-H bonds, which is exceedingly appealing and highly important.
Collapse
Affiliation(s)
- Koushik Ghosh
- School of Chemistry, University of Hyderabad, Hyderabad, 500046, India
| | - Raja K Rit
- School of Chemistry, University of Hyderabad, Hyderabad, 500046, India
| | - Majji Shankar
- School of Chemistry, University of Hyderabad, Hyderabad, 500046, India
| | - Kallol Mukherjee
- School of Chemistry, University of Hyderabad, Hyderabad, 500046, India
| | - Akhila K Sahoo
- School of Chemistry, University of Hyderabad, Hyderabad, 500046, India
| |
Collapse
|
4
|
Hirosawa K, Usuki Y, Satoh T. Iridium(III)‐Catalyzed Dehydrogenative Coupling of Salicylic Acids with Alkynes: Synthesis of Highly Substituted 1‐Naphthol Derivatives. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201900919] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Keishi Hirosawa
- Department of Chemistry, Graduate School of ScienceOsaka City University, 3–3-138 Sugimoto, Sumiyoshi-ku Osaka 558-8585 Japan
| | - Yoshinosuke Usuki
- Department of Chemistry, Graduate School of ScienceOsaka City University, 3–3-138 Sugimoto, Sumiyoshi-ku Osaka 558-8585 Japan
| | - Tetsuya Satoh
- Department of Chemistry, Graduate School of ScienceOsaka City University, 3–3-138 Sugimoto, Sumiyoshi-ku Osaka 558-8585 Japan
| |
Collapse
|
5
|
Santhoshkumar R, Cheng CH. Reaching Green: Heterocycle Synthesis by Transition Metal-Catalyzed C-H Functionalization in Sustainable Medium. Chemistry 2019; 25:9366-9384. [PMID: 31116458 DOI: 10.1002/chem.201901026] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2019] [Revised: 04/26/2019] [Indexed: 01/18/2023]
Abstract
Catalytic C-H functionalization has emerged as an efficient alternative to traditional coupling reactions. However, some of these reactions depend on environmentally harmful solvents, weakening the overall green nature of these methods. As organic processes consume large amount of solvents, the use of less harmful solvents enhance the sustainability of these reactions. Herein, we present an overview of transition metal-catalyzed C-H functionalization reactions for the synthesis of heterocycles in sustainable solvents based on CHEM21 solvent selection guide.
Collapse
Affiliation(s)
| | - Chien-Hong Cheng
- Department of Chemistry, National Tsing Hua University, Hsinchu, 30013, Taiwan
| |
Collapse
|
6
|
Building molecular complexity through transition-metal-catalyzed oxidative annulations/cyclizations: Harnessing the utility of phenols, naphthols and 1,3-dicarbonyl compounds. Coord Chem Rev 2019. [DOI: 10.1016/j.ccr.2018.11.001] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
|
7
|
Youn SW, Kim YH, Jo YH. Palladium‐Catalyzed Regioselective Synthesis of 1‐Hydroxycarbazoles Under Aerobic Conditions. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201801265] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- So Won Youn
- Center for New Directions in Organic Synthesis, Department of Chemistry and Research Institute for Natural SciencesHanyang University Seoul 04763 Korea
| | - Young Ho Kim
- Center for New Directions in Organic Synthesis, Department of Chemistry and Research Institute for Natural SciencesHanyang University Seoul 04763 Korea
| | - Yoon Hyung Jo
- Center for New Directions in Organic Synthesis, Department of Chemistry and Research Institute for Natural SciencesHanyang University Seoul 04763 Korea
| |
Collapse
|
8
|
Gandeepan P, Müller T, Zell D, Cera G, Warratz S, Ackermann L. 3d Transition Metals for C-H Activation. Chem Rev 2018; 119:2192-2452. [PMID: 30480438 DOI: 10.1021/acs.chemrev.8b00507] [Citation(s) in RCA: 1385] [Impact Index Per Article: 230.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
C-H activation has surfaced as an increasingly powerful tool for molecular sciences, with notable applications to material sciences, crop protection, drug discovery, and pharmaceutical industries, among others. Despite major advances, the vast majority of these C-H functionalizations required precious 4d or 5d transition metal catalysts. Given the cost-effective and sustainable nature of earth-abundant first row transition metals, the development of less toxic, inexpensive 3d metal catalysts for C-H activation has gained considerable recent momentum as a significantly more environmentally-benign and economically-attractive alternative. Herein, we provide a comprehensive overview on first row transition metal catalysts for C-H activation until summer 2018.
Collapse
Affiliation(s)
- Parthasarathy Gandeepan
- Institut für Organische und Biomolekulare Chemie , Georg-August-Universität Göttingen , Tammannstraße 2 , 37077 Göttingen , Germany
| | - Thomas Müller
- Institut für Organische und Biomolekulare Chemie , Georg-August-Universität Göttingen , Tammannstraße 2 , 37077 Göttingen , Germany
| | - Daniel Zell
- Institut für Organische und Biomolekulare Chemie , Georg-August-Universität Göttingen , Tammannstraße 2 , 37077 Göttingen , Germany
| | - Gianpiero Cera
- Institut für Organische und Biomolekulare Chemie , Georg-August-Universität Göttingen , Tammannstraße 2 , 37077 Göttingen , Germany
| | - Svenja Warratz
- Institut für Organische und Biomolekulare Chemie , Georg-August-Universität Göttingen , Tammannstraße 2 , 37077 Göttingen , Germany
| | - Lutz Ackermann
- Institut für Organische und Biomolekulare Chemie , Georg-August-Universität Göttingen , Tammannstraße 2 , 37077 Göttingen , Germany
| |
Collapse
|
9
|
Yamaguchi M, Ozawa H, Katsumata H, Akiyama T, Manabe K. One-pot synthesis of 2,3-disubstituted benzofurans from 2-chlorophenols using palladium–dihydroxyterphenylphosphine catalyst. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2018.07.019] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
|
10
|
Lakshminarayana B, Mahendar L, Chakraborty J, Satyanarayana G, Subrahmanyam C. Organic transformations catalyzed by palladium nanoparticles on carbon nanomaterials. J CHEM SCI 2018. [DOI: 10.1007/s12039-018-1449-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
|
11
|
Lakshminarayana B, Chakraborty J, Satyanarayana G, Subrahmanyam C. Recyclable Pd/CuFe2O4 nanowires: a highly active catalyst for C–C couplings and synthesis of benzofuran derivatives. RSC Adv 2018; 8:21030-21039. [PMID: 35542338 PMCID: PMC9080875 DOI: 10.1039/c8ra03697g] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2018] [Accepted: 06/01/2018] [Indexed: 12/02/2022] Open
Abstract
Pd/CuFe2O4 nanowire-catalyzed cross coupling transformations are described. Notably, these reactions showed excellent functional group tolerance. Further, the protocol is applied to a one-pot synthesis of benzofurans via a Sonogashira coupling and intramolecular etherification sequence. The catalyst was reused and found to maintain its activity and stability. Efficient heterogeneous Pd/CuFe2O4 nanowires which catalyze cross coupling transformations are described. The protocol is applied to a one-pot synthesis of benzofurans via Sonogashira coupling and an intramolecular etherification sequence.![]()
Collapse
Affiliation(s)
| | | | - G. Satyanarayana
- Department of Chemistry
- Indian Institute of Technology Hyderabad
- India
| | - Ch. Subrahmanyam
- Department of Chemistry
- Indian Institute of Technology Hyderabad
- India
| |
Collapse
|
12
|
Synthesis of Pyrrole-Annulated Heterocycles through Copper-Catalyzed Site-Selective Dehydrogenative Cross-Coupling. European J Org Chem 2017. [DOI: 10.1002/ejoc.201700929] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
|
13
|
Vo DD, Elofsson M. Synthesis of 4-Formyl-2-arylbenzofuran Derivatives by PdCl(C3H5)dppb-Catalyzed Tandem Sonogashira Coupling-Cyclization under Microwave Irradiation - Application to the Synthesis of Viniferifuran Analogues. ChemistrySelect 2017. [DOI: 10.1002/slct.201701490] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Duy D. Vo
- Department of Chemistry; Umeå University; SE90187 Umeå Sweden
| | - Mikael Elofsson
- Department of Chemistry; Umeå University; SE90187 Umeå Sweden
| |
Collapse
|
14
|
He GX, Yuan JM, Zhu HM, Wei K, Wang LY, Kong SL, Mo DL, Pan CX, Su GF. Synthesis and antitumor evaluation of 2,3-diarylbenzofuran derivatives on HeLa cells. Bioorg Med Chem Lett 2017; 27:1660-1664. [DOI: 10.1016/j.bmcl.2017.03.010] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2016] [Revised: 02/19/2017] [Accepted: 03/06/2017] [Indexed: 01/03/2023]
|
15
|
Rehan M, Nallagonda R, Das BG, Meena T, Ghorai P. Synthesis of Functionalized Benzo[b]furans via Oxidative Cyclization of o-Cinnamyl Phenols. J Org Chem 2017; 82:3411-3424. [PMID: 28249386 DOI: 10.1021/acs.joc.6b02752] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Disclosed herein is an efficient synthetic route for the synthesis of functionalized 2-benzyl benzo[b]furans via a regioselective 5-exo-trig intramolecular oxidative cyclization of ortho-cinnamyl phenols using [PdCl2(CH3CN)2] as catalyst and benzoquinone as an oxidant. Further, a sequential ortho-cinnamylation of phenols using cinnamyl alcohols catalyzed by Re2O7, followed by an oxidative cyclization using the above Pd catalyst, is performed. The reaction showed broad substrate scope with good to excellent yields.
Collapse
Affiliation(s)
- Mohammad Rehan
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal , Bhauri, Bhopal-462066, India
| | - Rajender Nallagonda
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal , Bhauri, Bhopal-462066, India
| | - Braja Gopal Das
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal , Bhauri, Bhopal-462066, India
| | - Tannu Meena
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal , Bhauri, Bhopal-462066, India
| | - Prasanta Ghorai
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal , Bhauri, Bhopal-462066, India
| |
Collapse
|
16
|
Tang J, Li S, Liu Z, Zhao Y, She Z, Kadam VD, Gao G, Lan J, You J. Cascade C–H Annulation of Aldoximes with Alkynes Using O2 as the Sole Oxidant: One-Pot Access to Multisubstituted Protoberberine Skeletons. Org Lett 2017; 19:604-607. [DOI: 10.1021/acs.orglett.6b03772] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Junbin Tang
- Key Laboratory of Green Chemistry
and Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu 610064, P.R. China
| | - Shiqing Li
- Key Laboratory of Green Chemistry
and Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu 610064, P.R. China
| | - Zheng Liu
- Key Laboratory of Green Chemistry
and Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu 610064, P.R. China
| | - Yinsong Zhao
- Key Laboratory of Green Chemistry
and Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu 610064, P.R. China
| | - Zhijie She
- Key Laboratory of Green Chemistry
and Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu 610064, P.R. China
| | - Vilas D. Kadam
- Key Laboratory of Green Chemistry
and Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu 610064, P.R. China
| | - Ge Gao
- Key Laboratory of Green Chemistry
and Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu 610064, P.R. China
| | - Jingbo Lan
- Key Laboratory of Green Chemistry
and Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu 610064, P.R. China
| | - Jingsong You
- Key Laboratory of Green Chemistry
and Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu 610064, P.R. China
| |
Collapse
|
17
|
Li J, Hu Y, Zhang D, Liu Q, Dong Y, Liu H. Transition Metal-Catalyzed Reactions Involving Oximes. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201600807] [Citation(s) in RCA: 94] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Jun Li
- School of Chemical Engineering; Shandong University of Technology; 266 West Xincun Road Zibo 255049 People's Republic of China
| | - Yitian Hu
- School of Chemical Engineering; Shandong University of Technology; 266 West Xincun Road Zibo 255049 People's Republic of China
| | - Daopeng Zhang
- School of Chemical Engineering; Shandong University of Technology; 266 West Xincun Road Zibo 255049 People's Republic of China
| | - Qing Liu
- School of Chemical Engineering; Shandong University of Technology; 266 West Xincun Road Zibo 255049 People's Republic of China
| | - Yunhui Dong
- School of Chemical Engineering; Shandong University of Technology; 266 West Xincun Road Zibo 255049 People's Republic of China
| | - Hui Liu
- School of Chemical Engineering; Shandong University of Technology; 266 West Xincun Road Zibo 255049 People's Republic of China
- College of Materials Science and Engineering; Hunan University; Changsha, Hunan 410082 People's Republic of China
- Engineering Research Center of Textile Chemicals &; Dyeing and Finishing of Shandong University of Technology; Zibo 255049 People's Republic of China
| |
Collapse
|
18
|
Sreenivasulu C, Gopi Krishna Reddy A, Satyanarayana G. Oxidative annulations triggered by a simple Lewis acid: facile synthesis of benzofurans. Org Chem Front 2017. [DOI: 10.1039/c6qo00531d] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The first example of Lewis acid promoted efficient one-pot synthesis of benzofurans is presented.
Collapse
Affiliation(s)
| | | | - G. Satyanarayana
- Department of Chemistry
- Indian Institute of Technology
- Hyderabad
- India
| |
Collapse
|
19
|
Boobalan R, Gandeepan P, Cheng CH. Ruthenium-Catalyzed C–H Alkynylation of Aromatic Amides with Hypervalent Iodine–Alkyne Reagents. Org Lett 2016; 18:3314-7. [DOI: 10.1021/acs.orglett.6b01281] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Ramadoss Boobalan
- Department
of Chemistry, National Tsing Hua University, Hsinchu 30013, Taiwan
| | | | - Chien-Hong Cheng
- Department
of Chemistry, National Tsing Hua University, Hsinchu 30013, Taiwan
| |
Collapse
|
20
|
Boyarskiy VP, Ryabukhin DS, Bokach NA, Vasilyev AV. Alkenylation of Arenes and Heteroarenes with Alkynes. Chem Rev 2016; 116:5894-986. [DOI: 10.1021/acs.chemrev.5b00514] [Citation(s) in RCA: 319] [Impact Index Per Article: 39.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Vadim P. Boyarskiy
- Institute of Chemistry, Saint Petersburg State University, Universitetskaya nab., 7/9, Saint Petersburg 199034, Russia
| | - Dmitry S. Ryabukhin
- Institute of Chemistry, Saint Petersburg State University, Universitetskaya nab., 7/9, Saint Petersburg 199034, Russia
- Department of Chemistry, Saint Petersburg State Forest Technical University, Institutsky per. 5, Saint Petersburg 194021, Russia
| | - Nadezhda A. Bokach
- Institute of Chemistry, Saint Petersburg State University, Universitetskaya nab., 7/9, Saint Petersburg 199034, Russia
| | - Aleksander V. Vasilyev
- Institute of Chemistry, Saint Petersburg State University, Universitetskaya nab., 7/9, Saint Petersburg 199034, Russia
- Department of Chemistry, Saint Petersburg State Forest Technical University, Institutsky per. 5, Saint Petersburg 194021, Russia
| |
Collapse
|
21
|
Gandeepan P, Rajamalli P, Cheng CH. Diastereoselective [3+2] Annulation of Aromatic/Vinylic Amides with Bicyclic Alkenes through Cobalt-Catalyzed C−H Activation and Intramolecular Nucleophilic Addition. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201512018] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
| | | | - Chien-Hong Cheng
- Department of Chemistry; National Tsing Hua University; Hsinchu 30013 Taiwan
| |
Collapse
|
22
|
Gandeepan P, Rajamalli P, Cheng CH. Diastereoselective [3+2] Annulation of Aromatic/Vinylic Amides with Bicyclic Alkenes through Cobalt-Catalyzed C−H Activation and Intramolecular Nucleophilic Addition. Angew Chem Int Ed Engl 2016; 55:4308-11. [DOI: 10.1002/anie.201512018] [Citation(s) in RCA: 128] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2015] [Indexed: 11/07/2022]
Affiliation(s)
| | | | - Chien-Hong Cheng
- Department of Chemistry; National Tsing Hua University; Hsinchu 30013 Taiwan
| |
Collapse
|
23
|
Shoba VM, Thacker NC, Bochat AJ, Takacs JM. Synthesis of Chiral Tertiary Boronic Esters by Oxime-Directed Catalytic Asymmetric Hydroboration. Angew Chem Int Ed Engl 2016; 55:1465-9. [PMID: 26662460 PMCID: PMC4878850 DOI: 10.1002/anie.201509137] [Citation(s) in RCA: 81] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2015] [Indexed: 11/11/2022]
Abstract
Chiral boronic esters are useful intermediates in asymmetric synthesis. We have previously shown that carbonyl-directed catalytic asymmetric hydroboration (CAHB) is an efficient approach to the synthesis of functionalized primary and secondary chiral boronic esters. We now report that the oxime-directed CAHB of alkyl-substituted methylidene and trisubstituted alkene substrates by pinacolborane (pinBH) affords oxime-containing chiral tertiary boronic esters with yields up to 87% and enantiomeric ratios up to 96:4 e.r. The utility of the method is demonstrated by the formation of chiral diols and O-substituted hydroxylamines, the generation of quaternary carbon stereocenters through carbon-carbon coupling reactions, and the preparation of chiral 3,4,4-trisubstituted isoxazolines.
Collapse
Affiliation(s)
- Veronika M Shoba
- Department of Chemistry, University of Nebraska-Lincoln, 807 Hamilton Hall, Lincoln, NE, 68588-0304, USA
| | - Nathan C Thacker
- Department of Chemistry, University of Nebraska-Lincoln, 807 Hamilton Hall, Lincoln, NE, 68588-0304, USA
| | - Andrew J Bochat
- Department of Chemistry, University of Nebraska-Lincoln, 807 Hamilton Hall, Lincoln, NE, 68588-0304, USA
| | - James M Takacs
- Department of Chemistry, University of Nebraska-Lincoln, 807 Hamilton Hall, Lincoln, NE, 68588-0304, USA.
| |
Collapse
|
24
|
Geng C, Jiang M, Feng L, Jiao P. Palladium catalyzed C–H bond acetoxylation: isoxazolinyl as a directing group. RSC Adv 2016. [DOI: 10.1039/c6ra07793e] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Pd(OAc)2-catalyzed acetoxylations of 3-aryl or 3-alkyl groups mounted on a 2-isoxazoline ring were studied. Substituent effect on reactivity and regioselectivity was examined. The acetoxylation was applied to the synthesis of useful intermediates.
Collapse
Affiliation(s)
- Caiwei Geng
- Key Laboratory of Radiopharmaceuticals
- Ministry of Education
- College of Chemistry
- Beijing Normal University
- Beijing 100875
| | - Minghui Jiang
- Key Laboratory of Radiopharmaceuticals
- Ministry of Education
- College of Chemistry
- Beijing Normal University
- Beijing 100875
| | - Lifei Feng
- Key Laboratory of Radiopharmaceuticals
- Ministry of Education
- College of Chemistry
- Beijing Normal University
- Beijing 100875
| | - Peng Jiao
- Key Laboratory of Radiopharmaceuticals
- Ministry of Education
- College of Chemistry
- Beijing Normal University
- Beijing 100875
| |
Collapse
|
25
|
Shao LY, Li C, Guo Y, Yu KK, Zhao FY, Qiao WL, Liu HW, Liao DH, Ji YF. Pd-catalyzed direct oxidative mono-aroyloxylation of O-aralkyl substituted acetoxime ethers. RSC Adv 2016. [DOI: 10.1039/c6ra16105g] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A highly site-selective palladium-catalyzed ortho-mono-aroyloxylation of O-aralkyl substituted acetoxime ethers via direct Csp2–H bond activation has been developed with simple exo-acetoxime as a directing group.
Collapse
Affiliation(s)
- Ling-Yan Shao
- School of Pharmacy
- East China University of Science & Technology
- Shanghai 200237
- P. R. China
| | - Chao Li
- School of Pharmacy
- East China University of Science & Technology
- Shanghai 200237
- P. R. China
- Roche R & D Center (China) Ltd
| | - Ying Guo
- School of Pharmacy
- East China University of Science & Technology
- Shanghai 200237
- P. R. China
| | - Kun-Kun Yu
- School of Pharmacy
- East China University of Science & Technology
- Shanghai 200237
- P. R. China
| | - Fei-Yi Zhao
- School of Pharmacy
- East China University of Science & Technology
- Shanghai 200237
- P. R. China
| | - Wen-Li Qiao
- School of Pharmacy
- East China University of Science & Technology
- Shanghai 200237
- P. R. China
| | - Hong-Wei Liu
- School of Pharmacy
- East China University of Science & Technology
- Shanghai 200237
- P. R. China
| | - Dao-Hua Liao
- School of Pharmacy
- East China University of Science & Technology
- Shanghai 200237
- P. R. China
| | - Ya-Fei Ji
- School of Pharmacy
- East China University of Science & Technology
- Shanghai 200237
- P. R. China
| |
Collapse
|
26
|
Shoba VM, Thacker NC, Bochat AJ, Takacs JM. Synthesis of Chiral Tertiary Boronic Esters by Oxime-Directed Catalytic Asymmetric Hydroboration. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201509137] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Veronika M. Shoba
- Department of Chemistry; University of Nebraska-Lincoln; 807 Hamilton Hall Lincoln NE 68588-0304 USA
| | - Nathan C. Thacker
- Department of Chemistry; University of Nebraska-Lincoln; 807 Hamilton Hall Lincoln NE 68588-0304 USA
| | - Andrew J. Bochat
- Department of Chemistry; University of Nebraska-Lincoln; 807 Hamilton Hall Lincoln NE 68588-0304 USA
| | - James M. Takacs
- Department of Chemistry; University of Nebraska-Lincoln; 807 Hamilton Hall Lincoln NE 68588-0304 USA
| |
Collapse
|
27
|
Ghosh M, Santra S, Mondal P, Kundu D, Hajra A. Diversified Synthesis of Furans by Coupling between Enols/1,3-Dicarbonyl Compounds and Nitroolefins: Direct Access to Dioxa[5]helicenes. Chem Asian J 2015; 10:2525-36. [PMID: 26227173 DOI: 10.1002/asia.201500710] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2015] [Indexed: 01/06/2023]
Abstract
A versatile method for the diversified synthesis of furans and arenofurans has been developed that proceeds through K2CO3-promoted cyclization between enols/1,3-dicarbonyl compounds and nitroolefins at reflux in EtOH. This facile method has been successfully employed in the synthesis of benzotrifuran derivatives, which are useful hole-transporting materials. This procedure also provides direct access to dioxa[5]helicenes. This reaction offers a broad substrate scope, uses an inexpensive base and environmentally benign solvent, and is operationally simple.
Collapse
Affiliation(s)
- Monoranjan Ghosh
- Department of Chemistry, Visva-Bharati (A Central University), Santiniketan, 731235, West Bengal, India
| | - Sougata Santra
- Department of Chemistry, Visva-Bharati (A Central University), Santiniketan, 731235, West Bengal, India
| | - Pallab Mondal
- Department of Chemistry, Visva-Bharati (A Central University), Santiniketan, 731235, West Bengal, India
| | - Dhiman Kundu
- Department of Chemistry, Visva-Bharati (A Central University), Santiniketan, 731235, West Bengal, India
| | - Alakananda Hajra
- Department of Chemistry, Visva-Bharati (A Central University), Santiniketan, 731235, West Bengal, India.
| |
Collapse
|
28
|
Hu J, Guan M, Han J, Huang ZB, Shi DQ, Zhao Y. Palladium-Catalyzed ortho-Olefination of Phenyl Acetic and Phenyl Propylacetic Esters via C–H Bond Activation. J Org Chem 2015. [DOI: 10.1021/acs.joc.5b00775] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Jundie Hu
- Key Laboratory of Organic Synthesis of Jiangsu Province, College
of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
| | - Mingyu Guan
- Key Laboratory of Organic Synthesis of Jiangsu Province, College
of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
| | - Jian Han
- Key Laboratory of Organic Synthesis of Jiangsu Province, College
of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
| | - Zhi-Bin Huang
- Key Laboratory of Organic Synthesis of Jiangsu Province, College
of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
| | - Da-Qing Shi
- Key Laboratory of Organic Synthesis of Jiangsu Province, College
of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
| | - Yingsheng Zhao
- Key Laboratory of Organic Synthesis of Jiangsu Province, College
of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
| |
Collapse
|
29
|
Kuppusamy R, Gandeepan P, Cheng CH. RhIII-Catalyzed [4 + 1] Annulations of 2-Hydroxy- and 2-Aminobenzaldehydes with Allenes: A Simple Method toward 3-Coumaranones and 3-Indolinones. Org Lett 2015. [DOI: 10.1021/acs.orglett.5b01825] [Citation(s) in RCA: 66] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ramajayam Kuppusamy
- Department
of Chemistry, National Tsing Hua University, Hsinchu 30013, Taiwan
| | | | - Chien-Hong Cheng
- Department
of Chemistry, National Tsing Hua University, Hsinchu 30013, Taiwan
| |
Collapse
|
30
|
Guo W, Zhou T, Xia Y. Mechanistic Understanding of the Aryl-Dependent Ring Formations in Rh(III)-Catalyzed C–H Activation/Cycloaddition of Benzamides and Methylenecyclopropanes by DFT Calculations. Organometallics 2015. [DOI: 10.1021/acs.organomet.5b00317] [Citation(s) in RCA: 65] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Wei Guo
- College of Chemistry and Materials
Engineering, Wenzhou University, Wenzhou 325035, People’s Republic of China
| | - Tao Zhou
- College of Chemistry and Materials
Engineering, Wenzhou University, Wenzhou 325035, People’s Republic of China
| | - Yuanzhi Xia
- College of Chemistry and Materials
Engineering, Wenzhou University, Wenzhou 325035, People’s Republic of China
| |
Collapse
|
31
|
Thacker NC, Shoba VM, Geis AE, Takacs JM. Surprisingly Facile C-H Activation in the Course of Oxime-Directed Catalytic Asymmetric Hydroboration. Tetrahedron Lett 2015; 56:3306-3310. [PMID: 26120214 DOI: 10.1016/j.tetlet.2014.12.076] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
Deuterium-labeling studies carried out in conjunction with investigations into the directed catalytic asymmetric hydroboration of unsaturated oxime ethers reveal a surprisingly facile ortho-metallation or σ-bond metathesis pathway that that diverts the expected course of CAHB to a tandem C-H activation/hydroboration reaction pathway.
Collapse
Affiliation(s)
- Nathan C Thacker
- Department of Chemistry, University of Nebraska-Lincoln, Lincoln, NE 68588 USA
| | - Veronika M Shoba
- Department of Chemistry, University of Nebraska-Lincoln, Lincoln, NE 68588 USA
| | - Andrew E Geis
- Department of Chemistry, University of Nebraska-Lincoln, Lincoln, NE 68588 USA
| | - James M Takacs
- Department of Chemistry, University of Nebraska-Lincoln, Lincoln, NE 68588 USA
| |
Collapse
|
32
|
Gandeepan P, Rajamalli P, Cheng CH. Rhodium(III)-Catalyzed [4+1] Annulation of Aromatic and Vinylic Carboxylic Acids with Allenes: An Efficient Method Towards Vinyl-Substituted Phthalides and 2-Furanones. Chemistry 2015; 21:9198-203. [DOI: 10.1002/chem.201501106] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2015] [Indexed: 11/09/2022]
|
33
|
Guo K, Chen X, Guan M, Zhao Y. Direct ortho-C–H Functionalization of Aromatic Alcohols Masked by Acetone Oxime Ether via exo-Palladacycle. Org Lett 2015; 17:1802-5. [DOI: 10.1021/acs.orglett.5b00594] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Kun Guo
- Key Laboratory
of Organic
Synthesis of Jiangsu Province College of Chemistry, Chemical Engineering and Materials Science Soochow University, Suzhou 215123, PR China
| | - Xiaolan Chen
- Key Laboratory
of Organic
Synthesis of Jiangsu Province College of Chemistry, Chemical Engineering and Materials Science Soochow University, Suzhou 215123, PR China
| | - Mingyu Guan
- Key Laboratory
of Organic
Synthesis of Jiangsu Province College of Chemistry, Chemical Engineering and Materials Science Soochow University, Suzhou 215123, PR China
| | - Yingsheng Zhao
- Key Laboratory
of Organic
Synthesis of Jiangsu Province College of Chemistry, Chemical Engineering and Materials Science Soochow University, Suzhou 215123, PR China
| |
Collapse
|
34
|
Gandeepan P, Cheng CH. Transition-Metal-Catalyzed π-Bond-Assisted CH Bond Functionalization: An Emerging Trend in Organic Synthesis. Chem Asian J 2015; 10:824-38. [DOI: 10.1002/asia.201403224] [Citation(s) in RCA: 151] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2014] [Indexed: 01/06/2023]
|