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Hayashi M, Burtoloso ACB. Synthesis of gem-Difluorinated Keto-Sulfoxides from Sulfoxonium Ylides. Chemistry 2024; 30:e202400108. [PMID: 38318729 DOI: 10.1002/chem.202400108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2024] [Revised: 02/05/2024] [Accepted: 02/06/2024] [Indexed: 02/07/2024]
Abstract
Organic molecules containing fluorine and sulfur atoms represent a large percentage of approved pharmaceuticals. Those with combination of both S and F atoms in their structure such as Xtandi, approved in 2012 for prostate cancer, indicates the importance of synthetic methods that accommodates both atoms in an organic moiety. In this study, a novel aspect of sulfoxonium ylide reactivity was explored, unveiling a streamlined and mild synthesis method for gem-difluorinated keto-sulfoxides. Our protocol offers a direct and practical approach to prepare these compounds in 14-80 % chemical yields, that were represented by 21 examples. NMR studies and Hammett correlations gave strong evidence about the mechanism of this transformation.
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Affiliation(s)
- Marcio Hayashi
- Department of Physical Chemistry, São Carlos Institute of Chemistry, University of São Paulo CEP, SP-13563-120, São Carlos, Brazil
| | - Antonio C B Burtoloso
- Department of Physical Chemistry, São Carlos Institute of Chemistry, University of São Paulo CEP, SP-13563-120, São Carlos, Brazil
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2
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Sharma A, Gola AK, Pandey SK. Straightforward access to α-thiocyanoketones and thiazoles from sulfoxonium ylides. Chem Commun (Camb) 2023; 59:10247-10250. [PMID: 37458384 DOI: 10.1039/d3cc02401f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/23/2023]
Abstract
Efficient, versatile, and metal-free strategies for synthesizing α-thiocyanoketones and thiazoles from β-ketosulfoxonium ylides and ammonium thiocyanate have been described. Due to its simplicity, benign reaction conditions, excellent chemoselectivity, and high yield, this method represents a unique approach for divergent synthesis. Finally, the potential value of the developed methods is demonstrated via large-scale reactions and synthesis of Fanetizole, an anti-inflammatory drug.
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Affiliation(s)
- Ajay Sharma
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi 221 005, India.
| | - Ajay Kant Gola
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi 221 005, India.
| | - Satyendra Kumar Pandey
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi 221 005, India.
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3
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Kumar N, Sharma A, Kumar U, Pandey SK. Multicomponent Reaction of CS 2, Amines, and Sulfoxonium Ylides in Water: Straightforward Access to β-Keto Dithiocarbamates, Thiazolidine-2-thiones, and Thiazole-2-thiones. J Org Chem 2023; 88:6120-6125. [PMID: 37018423 DOI: 10.1021/acs.joc.2c02763] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/07/2023]
Abstract
Simple, versatile, and catalyst-free synthetic methods for β-keto dithiocarbamates, thiazolidine-2-thiones, and thiazole-2-thiones via the multicomponent reaction of CS2, amines, and sulfoxonium ylides have been described. The β-keto sulfoxonium ylides furnished β-keto dithiocarbamates in the presence of CS2 and secondary amines, whereas primary amines afforded thiazolidine-2-thiones or thiazole-2-thiones after dehydration in an acidic environment. With simple procedures, the reaction has a wide substrate scope and excellent functional group tolerance.
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Affiliation(s)
- Naveen Kumar
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi 221 005, India
| | - Ajay Sharma
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi 221 005, India
| | - Upendra Kumar
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi 221 005, India
| | - Satyendra Kumar Pandey
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi 221 005, India
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4
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Chaubey TN, Borpatra PJ, Sharma A, Pandey SK. Metal-Free Syntheses of α-Ketothioamide and α-Ketoamide Derivatives from Sulfoxonium Ylides. Org Lett 2022; 24:8062-8066. [PMID: 36278911 DOI: 10.1021/acs.orglett.2c03371] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
An efficient base, additive and metal-free synthetic methods for α-ketothioamide and α-ketoamide derivatives from readily available sulfoxonium ylides have been described. Sulfoxonium ylides with primary or secondary amines afforded α-ketothioamides in the presence of elemental sulfur, whereas α-ketoamides were produced when I2 and TBHP were present. The reaction proceeded well at room temperature and generated the corresponding molecules in good to excellent yields. The reaction can be scaled-up and tolerated by a range of functional groups with simple operational procedures.
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Affiliation(s)
- Trayambek Nath Chaubey
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi, Uttar Pradesh 221005, India
| | - Paran J Borpatra
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi, Uttar Pradesh 221005, India
| | - Ajay Sharma
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi, Uttar Pradesh 221005, India
| | - Satyendra Kumar Pandey
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi, Uttar Pradesh 221005, India
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5
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Echemendía R, de Oliveira KT, Burtoloso ACB. Visible-Light-Promoted Synthesis of 1,3-Dicarbonyl Sulfoxonium Ylides. Org Lett 2022; 24:6386-6390. [PMID: 36017970 DOI: 10.1021/acs.orglett.2c02346] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
A novel visible-light-promoted coupling of diazoketones with sulfoxonium ylides, employing a violet light-emitting diode, is described under both batch and continuous flow conditions. This transformation permits the direct synthesis of synthetically useful 1,3-dicarbonyl sulfoxonium ylides (33 examples, 21-85% yields), by means of an acylation from the in situ and selective generation of ketenes. The reaction performed under flow conditions proved to be very efficient, providing the 1,3-dicarbonyl sulfoxonium ylides with higher yields and shorter reaction times.
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Affiliation(s)
- Radell Echemendía
- Institute of Chemistry of São Carlos, University of São Paulo, CEP, 13560-970 São Carlos, SP, Brazil
| | - Kleber T de Oliveira
- Department of Chemistry, Federal University of São Carlos, Campus São Carlos, 13565-905 São Carlos, SP, Brazil
| | - Antonio C B Burtoloso
- Institute of Chemistry of São Carlos, University of São Paulo, CEP, 13560-970 São Carlos, SP, Brazil
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6
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Echemendía R, de Jesus MP, Furniel LG, Day DP, Burtoloso ACB. Molecular Iodine Mediated Oxidation of Arylated α‐Carbonyl Sulfoxonium Ylides to 1,2‐Dicarbonyl Containing Compounds. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200441] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Radell Echemendía
- University of Sao Paulo: Universidade de Sao Paulo Physical Chemistry BRAZIL
| | - Matheus P. de Jesus
- University of Sao Paulo: Universidade de Sao Paulo Physical Chemistry BRAZIL
| | - Lucas G. Furniel
- University of Sao Paulo: Universidade de Sao Paulo Physical Chemistry BRAZIL
| | - David P Day
- University of Sao Paulo: Universidade de Sao Paulo Physical Chemistry BRAZIL
| | - Antonio Carlos Bender Burtoloso
- UNIVERSITY OF SÃO PAULO PHYSICAL CHEMISTRY Avenida João Dagnone, 1100, Loteamento Habitacional São Carlos 1INSTITUTO DE QUIMICA DE SAO CARLOS, UNIVERSIDADE DE SAO PAULO, CAMPUS 2 13563-120 SÃO CARLOS BRAZIL
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7
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Kumar G, Nagpure M, Rao VK, Guchhait SK. Synthesis of heterocyclic‐fused furans and dihydrofurans via a (4+1)‐annulation with ylide: Exploration of unique reactivity behavior of α‐carbonyl sulfoxonium ylide. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200193] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Gulshan Kumar
- National Institute of Pharmaceutical Education and Research Department of Medicinal Chemistry Sector 67SAS Nagar 160062 Mohali INDIA
| | - Mithilesh Nagpure
- National Institute of Pharmaceutical Education and Research Department of Medicinal Chemistry Sector 67SAS Nagar 160062 Mohali INDIA
| | - Vajja Krishna Rao
- National Institute of Pharmaceutical Education and Research Department of Medicinal Chemistry Sector 67SAS Nagar 160062 Mohali INDIA
| | - Sankar Kumar Guchhait
- National Institute of Pharmaceutical Education and Research Department of Medicinal Chemistry Phase X, Sector 67 160062 S. A. S. Nagar Mohali INDIA
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8
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Guo W, Jiang F, Li S, Sun J. Organocatalytic asymmetric azidation of sulfoxonium ylides: mild synthesis of enantioenriched α-azido ketones bearing a labile tertiary stereocenter. Chem Sci 2022; 13:11648-11655. [PMID: 36320381 PMCID: PMC9555749 DOI: 10.1039/d2sc03552a] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2022] [Accepted: 09/06/2022] [Indexed: 12/19/2022] Open
Abstract
Disclosed here is a catalytic asymmetric azidation reaction for the efficient synthesis of α-azido ketones bearing a labile tertiary stereocenter. With a superb chiral squaramide catalyst, a mild asymmetric formal H–N3 insertion of α-carbonyl sulfoxonium ylides proceeded with excellent efficiency and enantioselectivity. This organocatalytic process not only complements the previous α-azidation approaches for the formation of quaternary stereocenters and mostly for 1,3-dicarbonyl compounds, but also has advantages over the well-known metal-catalyzed asymmetric carbene insertion chemistry using α-diazocarbonyl compounds. Detailed mechanistic studies via control reactions and NMR studies provided important insights into the reaction pathway, which features reversible protonation and dynamic kinetic resolution. The curiosity in mechanism also led to the development of a simplified alternative protocol with a cheaper HN3 source. An organocatalytic asymmetric H–N3 insertion of α-carbonyl sulfoxonium ylides has been developed, providing efficient access to α-azido ketones bearing labile tertiary stereocenters and complementing the metal carbene insertion chemistry.![]()
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Affiliation(s)
- Wengang Guo
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering, Changzhou University, Changzhou, China
| | - Feng Jiang
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering, Changzhou University, Changzhou, China
| | - Shijia Li
- Department of Chemistry and the Hong Kong Branch of Chinese National Engineering Research Centre for Tissue Restoration & Reconstruction, The Hong Kong University of Science and Technology (HKUST), Clear Water Bay, Kowloon, Hong Kong SAR, China
- Shenzhen Research Institute, HKUST, No. 9 Yuexing 1st Rd, Shenzhen 518057, China
| | - Jianwei Sun
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering, Changzhou University, Changzhou, China
- Department of Chemistry and the Hong Kong Branch of Chinese National Engineering Research Centre for Tissue Restoration & Reconstruction, The Hong Kong University of Science and Technology (HKUST), Clear Water Bay, Kowloon, Hong Kong SAR, China
- Shenzhen Research Institute, HKUST, No. 9 Yuexing 1st Rd, Shenzhen 518057, China
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9
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Pan M, Tong Y, Qiu X, Zeng X, Xiong B. One-pot synthesis of 3-trifluoromethylbenzo[ b][1,4]oxazines from CF 3-imidoyl sulfoxonium ylides with 2-bromophenols. Chem Commun (Camb) 2022; 58:12443-12446. [DOI: 10.1039/d2cc04863a] [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
A one-pot two-step fashion for the synthesis of 3-trifluoromethyl-1,4-benzoxazines from CF3-imidoyl sulfoxonium ylides and 2-bromophenols via lithium-bromide-promoted O–H insertion of sulfoxonium ylides and annulation has been demonstrated.
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Affiliation(s)
- Mingshi Pan
- School of Pharmacy, Nantong University, 19 Qixiu Road, Nantong, Jiangsu Province, 226001, China
| | - Yixin Tong
- School of Pharmacy, Nantong University, 19 Qixiu Road, Nantong, Jiangsu Province, 226001, China
| | - Xiaodong Qiu
- School of Pharmacy, Nantong University, 19 Qixiu Road, Nantong, Jiangsu Province, 226001, China
| | - Xiaobao Zeng
- School of Pharmacy, Nantong University, 19 Qixiu Road, Nantong, Jiangsu Province, 226001, China
| | - Biao Xiong
- School of Pharmacy, Nantong University, 19 Qixiu Road, Nantong, Jiangsu Province, 226001, China
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Kim HE, Choi JH, Chung WJ. Synthesis of α-Ketoimidoyl Fluorides via Geminal Fluorine-Promoted Azide Rearrangement. Org Lett 2021; 23:8810-8815. [PMID: 34723558 DOI: 10.1021/acs.orglett.1c03309] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Despite the promising synthetic potential, the utilization of imidoyl fluorides has been hampered by the lack of broadly applicable preparative methods. Herein, bench-stable α-ketoimidoyl fluorides were synthesized from geminal chlorofluorides through tandem azidation/rearrangement under mild conditions. The efficiency was consistently high, regardless of the steric and electronic environments. The synthetic utility of the α-ketoimidoyl fluoride was also demonstrated. Furthermore, the remarkable accelerating effect of the geminal fluorine substituent was identified and rationalized by density functional theory calculation.
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Affiliation(s)
- Ha Eun Kim
- Department of Chemistry, Gwangju Institute of Science and Technology, 123 Cheomdan-gwagi-ro, Buk-gu, Gwangju 61005, Republic of Korea
| | - Jun-Ho Choi
- Department of Chemistry, Gwangju Institute of Science and Technology, 123 Cheomdan-gwagi-ro, Buk-gu, Gwangju 61005, Republic of Korea
| | - Won-Jin Chung
- Department of Chemistry, Gwangju Institute of Science and Technology, 123 Cheomdan-gwagi-ro, Buk-gu, Gwangju 61005, Republic of Korea
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