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Gao ZY, He Y, Li LY, Tian JS, Loh TP. BF 3-promoted reactions of α-amino acetals with alkynes to 2,5-disubstituted pyrroles. Org Chem Front 2022. [DOI: 10.1039/d2qo00405d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An efficient BF3-promoted cyclization of α-amino acetals with alkynes for the assembly of substituted pyrroles has been developed. This cascade process can be easily achieved through a simple metal-free operation under mild conditions.
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Affiliation(s)
- Zhi-Yuan Gao
- School of Chemistry and Molecular Engineering, Nanjing Tech University (NanjingTech), Nanjing 211816, P. R. China
| | - Yu He
- School of Chemistry and Molecular Engineering, Nanjing Tech University (NanjingTech), Nanjing 211816, P. R. China
| | - Lan-Yang Li
- School of Chemistry and Molecular Engineering, Nanjing Tech University (NanjingTech), Nanjing 211816, P. R. China
| | - Jie-Sheng Tian
- School of Chemistry and Chemical Engineering, Northwestern Polytechnical University (NPU), Xi'an 710072, China
| | - Teck-Peng Loh
- School of Chemistry and Molecular Engineering, Nanjing Tech University (NanjingTech), Nanjing 211816, P. R. China
- School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371
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2
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Zheng J, Meng S, Wang Q. Cascade intramolecular Prins/Friedel-Crafts cyclization for the synthesis of 4-aryltetralin-2-ols and 5-aryltetrahydro-5 H-benzo[7]annulen-7-ols. Beilstein J Org Chem 2021; 17:1481-1489. [PMID: 34239615 PMCID: PMC8239259 DOI: 10.3762/bjoc.17.104] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2021] [Accepted: 06/14/2021] [Indexed: 12/13/2022] Open
Abstract
The treatment of 2-(2-vinylphenyl)acetaldehydes or 3-(2-vinylphenyl)propanals with BF3·Et2O results in an intramolecular Prins reaction affording intermediary benzyl carbenium ions, which are then trapped by a variety of electron-rich aromatics via Friedel–Crafts alkylation. This cascade Prins/Friedel–Crafts cyclization protocol paves an expedient path to medicinally useful 4-aryltetralin-2-ol and 5-aryltetrahydro-5H-benzo[7]annulen-7-ol derivatives.
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Affiliation(s)
- Jie Zheng
- Department of Chemistry, Fudan University, 2005 Songhu Road, Shanghai 200438, P. R. China
| | - Shuyu Meng
- Department of Chemistry, Fudan University, 2005 Songhu Road, Shanghai 200438, P. R. China
| | - Quanrui Wang
- Department of Chemistry, Fudan University, 2005 Songhu Road, Shanghai 200438, P. R. China
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3
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Li Y, Feng X, Jia X, Jin H, Chen F, Zhao Y, Zhang J, Wang J, Guo B, Tang L, Yang Y. Regiodivergent Functionalization of Isoquinoline‐1,3(2
H
,4
H
)‐dione Derivatives via Aerobic Umpolung. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100194] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Ying‐Xian Li
- State Key Laboratory of Functions and Applications of Medicinal Plants School of Pharmacy Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D Guizhou Medical University 550014 Guiyang P. R. China
| | - Xiao‐Bing Feng
- Xiao-Bing Feng Department of orthopaedics People's Hospital of Luzhou 646000 Luzhou P. R. China
| | - Xue‐Min Jia
- State Key Laboratory of Functions and Applications of Medicinal Plants School of Pharmacy Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D Guizhou Medical University 550014 Guiyang P. R. China
| | - Huang Jin
- State Key Laboratory of Functions and Applications of Medicinal Plants School of Pharmacy Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D Guizhou Medical University 550014 Guiyang P. R. China
| | - Fei Chen
- State Key Laboratory of Functions and Applications of Medicinal Plants School of Pharmacy Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D Guizhou Medical University 550014 Guiyang P. R. China
| | - Yong‐Long Zhao
- State Key Laboratory of Functions and Applications of Medicinal Plants School of Pharmacy Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D Guizhou Medical University 550014 Guiyang P. R. China
| | - Ji‐Quan Zhang
- State Key Laboratory of Functions and Applications of Medicinal Plants School of Pharmacy Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D Guizhou Medical University 550014 Guiyang P. R. China
| | - Jian‐Ta Wang
- State Key Laboratory of Functions and Applications of Medicinal Plants School of Pharmacy Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D Guizhou Medical University 550014 Guiyang P. R. China
| | - Bing Guo
- Guizhou Provincial Key Laboratory of Pathogenesis and Drug Research on Common Chronic Diseases Guizhou Medical University 550004 Guiyang P. R. China
| | - Lei Tang
- State Key Laboratory of Functions and Applications of Medicinal Plants School of Pharmacy Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D Guizhou Medical University 550014 Guiyang P. R. China
| | - Yuan‐Yong Yang
- State Key Laboratory of Functions and Applications of Medicinal Plants School of Pharmacy Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D Guizhou Medical University 550014 Guiyang P. R. China
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4
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Li C, Bai L, Ge MT, Xia AB, Wang Y, Qiu YR, Xu DQ. Base-controlled chemoselectivity: direct coupling of alcohols and acetonitriles to synthesise α-alkylated arylacetonitriles or acetamides. NEW J CHEM 2021. [DOI: 10.1039/d1nj02243a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
[Cp*IrCl2]2 with a phosphine-free ligand α,α,α-terpyridine shows high catalytic performance in chemodivergent synthesis of α-alkylated arylacetonitriles in the presence of K2CO3 and α-alkylated acetamides in the presence of tBuOK, respectively.
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Affiliation(s)
- Chen Li
- Catalytic Hydrogenation Research Center, State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Zhejiang University of Technology, Hangzhou 310014, China
| | - Liang Bai
- Catalytic Hydrogenation Research Center, State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Zhejiang University of Technology, Hangzhou 310014, China
| | - Min-Tong Ge
- Catalytic Hydrogenation Research Center, State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Zhejiang University of Technology, Hangzhou 310014, China
| | - Ai-Bao Xia
- Catalytic Hydrogenation Research Center, State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Zhejiang University of Technology, Hangzhou 310014, China
| | - Ying Wang
- Catalytic Hydrogenation Research Center, State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Zhejiang University of Technology, Hangzhou 310014, China
| | - Yuan-Rui Qiu
- Catalytic Hydrogenation Research Center, State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Zhejiang University of Technology, Hangzhou 310014, China
| | - Dan-Qian Xu
- Catalytic Hydrogenation Research Center, State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Zhejiang University of Technology, Hangzhou 310014, China
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5
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Liu DY, Zhu SM, Li RQ, Tian JS, Loh TP. α-Amino Acetal: A Synthetic Intermediate for the Construction of Aza-Polycycles. Org Lett 2019; 21:6357-6360. [PMID: 31369288 DOI: 10.1021/acs.orglett.9b02240] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
One-step construction of aza-polycyclic skeletons was realized through double cyclization of the oxocarbenium and carbocation intermediates generated from α-amino acetals, which were designed and synthesized by employing our α-amination protocol of aldehydes. A simple process, a broad substrate range, commercialized materials, and extensive applications demonstrated the generality and effectiveness of this method.
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Affiliation(s)
- Duan-Yang Liu
- Institute of Advanced Synthesis (IAS), School of Chemistry and Molecular Engineering (SCME) , Nanjing Tech University (NanjingTech) , 30 South Puzhu Road , Nanjing 211816 , P. R. China
| | - Si-Mao Zhu
- Institute of Advanced Synthesis (IAS), School of Chemistry and Molecular Engineering (SCME) , Nanjing Tech University (NanjingTech) , 30 South Puzhu Road , Nanjing 211816 , P. R. China
| | - Rui-Qi Li
- Institute of Advanced Synthesis (IAS), School of Chemistry and Molecular Engineering (SCME) , Nanjing Tech University (NanjingTech) , 30 South Puzhu Road , Nanjing 211816 , P. R. China
| | - Jie-Sheng Tian
- Institute of Advanced Synthesis (IAS), School of Chemistry and Molecular Engineering (SCME) , Nanjing Tech University (NanjingTech) , 30 South Puzhu Road , Nanjing 211816 , P. R. China
| | - Teck-Peng Loh
- Institute of Advanced Synthesis (IAS), School of Chemistry and Molecular Engineering (SCME) , Nanjing Tech University (NanjingTech) , 30 South Puzhu Road , Nanjing 211816 , P. R. China.,Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences , Nanyang Technological University , Singapore 637371
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6
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Matsumoto K, Yanagi R, Yamaguchi K, Hayashi E, Yasuda E, Nokami T, Nishiwaki K, Kashimura S, Kuriyama K. Lewis Acid Promoted Prins Cyclization Using Non-Conjugated Diene Alcohol: Sequential Reactions Terminated by Fluoride Ion. HETEROCYCLES 2018. [DOI: 10.3987/com-18-13940] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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