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Shen LW, Zhang YP, You Y, Zhao JQ, Wang ZH, Yuan WC. Inverse Electron-Demand Aza-Diels-Alder Reaction of α,β-Unsaturated Thioesters with In Situ-Generated 1,2-Diaza-1,3-dienes for the Synthesis of 1,3,4-Thiadiazines. J Org Chem 2022; 87:4232-4240. [PMID: 35212520 DOI: 10.1021/acs.joc.1c03072] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
A highly regioselective inverse electron-demand aza-Diels-Alder reaction of α,β-unsaturated thioesters with 1,2-diaza-1,3-dienes generated in situ from α-halogeno hydrazones was developed. With α,β-unsaturated thioesters as C═S dienophiles, the developed protocol enables the formation of diverse 3,6-dihydro-2H-1,3,4-thiadiazine derivatives in excellent yields. In the presence of lithium aluminum hydride, 3,6-dihydro-2H-1,3,4-thiadiazine derivatives could be further transformed into 5,6-dihydro-4H-1,3,4-thiadiazines in good yields.
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Affiliation(s)
- Li-Wen Shen
- National Engineering Research Center of Chiral Drugs, Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, China.,Innovation Research Center of Chiral Drugs, Institute for Advanced Study, Chengdu University, Chengdu 610106, China.,University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yan-Ping Zhang
- Innovation Research Center of Chiral Drugs, Institute for Advanced Study, Chengdu University, Chengdu 610106, China
| | - Yong You
- Innovation Research Center of Chiral Drugs, Institute for Advanced Study, Chengdu University, Chengdu 610106, China
| | - Jian-Qiang Zhao
- Innovation Research Center of Chiral Drugs, Institute for Advanced Study, Chengdu University, Chengdu 610106, China
| | - Zhen-Hua Wang
- Innovation Research Center of Chiral Drugs, Institute for Advanced Study, Chengdu University, Chengdu 610106, China
| | - Wei-Cheng Yuan
- Innovation Research Center of Chiral Drugs, Institute for Advanced Study, Chengdu University, Chengdu 610106, China
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Jilloju PC, Srikanth M, Kumar SV, Vedula RR. One-Pot, Multi-Component Synthesis of Substituted 2-(6-Phenyl-7H-[1,2,4]Triazolo[3,4-b][1,3,4]Thiadiazin-3-yl)-2,3-Dihydrophthalazine-1,4-Diones. Polycycl Aromat Compd 2020. [DOI: 10.1080/10406638.2019.1709212] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
| | - Mamidala Srikanth
- Department of Chemistry, National Institute of Technology, Warangal, India
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Jilloju PC, Vinaykumar A, Shyam P, Vedula RR. One‐pot, Multicomponent Cascade Reaction for the Synthesis of Various Aralkyl/alkylthio‐3,5‐dimethyl‐1
H
‐pyrazolyl‐4
H
‐1,2,4‐triazol‐4‐amine and Their Docking Studies. J Heterocycl Chem 2019. [DOI: 10.1002/jhet.3484] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
| | - Allam Vinaykumar
- Indian Institute of Chemical Technology Hyderabad Telangana 500007 India
| | - Perugu Shyam
- Department of BiotechnologyNational Institute of Technology Warangal Telangana 506004 India
| | - Rajeswar Rao Vedula
- Department of ChemistryNational Institute of Technology Warangal Telangana 506004 India
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Gudala S, Ambati SR, Sharma A, Patel JL, Vedula RR, Penta S. Facile synthesis of multi-functional 1,3,4-thiadiazine derivatives bearing phthalazine, pyridazine, and pyrido-pyridazine moieties. J CHIN CHEM SOC-TAIP 2018. [DOI: 10.1002/jccs.201800093] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Satish Gudala
- Department of Chemistry; National Institute of Technology; Raipur Chhattisgarh India
| | - Srinivasa Rao Ambati
- Department of Chemistry; National Institute of Technology; Raipur Chhattisgarh India
- Department of Research and Development; MSN R&D Center; Pashamylarram Telangana India
| | - Archi Sharma
- Department of Chemistry; National Institute of Technology; Raipur Chhattisgarh India
| | - Jeevan Lal Patel
- Department of Chemistry; National Institute of Technology; Raipur Chhattisgarh India
| | - Rajeswar Rao Vedula
- Department of Chemistry; National Institute of Technology; Warangal Telangana India
| | - Santhosh Penta
- Department of Chemistry; National Institute of Technology; Raipur Chhattisgarh India
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Jilloju PC, Vedula RR. A facile one-pot three-component synthesis of benzylideneamino-3,5-dimethyl-1H-pyrazoles. SYNTHETIC COMMUN 2018. [DOI: 10.1080/00397911.2018.1458242] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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