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Li X, Ye X, Wei C, Shan C, Wojtas L, Wang Q, Shi X. Diazo Activation with Diazonium Salts: Synthesis of Indazole and 1,2,4-Triazole. Org Lett 2020; 22:4151-4155. [PMID: 32463244 DOI: 10.1021/acs.orglett.0c01232] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
A donor/acceptor diazo activation strategy, processing via condensation using diazonium salts without the addition of any other catalysts or reagents, is reported. The diazenium intermediate was found to undergo cyclization to give indazoles in excellent yields. Alternatively, in the presence of nitriles, substituted 1,2,4-triazoles were obtained in good to excellent yields. This interesting diazenium route provides a new approach to achieve complex heterocycle synthesis under mild conditions.
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Affiliation(s)
- Xuming Li
- The Department of Chemistry, University of South Florida, 4202 East Fowler Avenue, Tampa, Florida 33620, United States
| | - Xiaohan Ye
- The Department of Chemistry, University of South Florida, 4202 East Fowler Avenue, Tampa, Florida 33620, United States
| | - Chiyu Wei
- The Department of Chemistry, University of South Florida, 4202 East Fowler Avenue, Tampa, Florida 33620, United States
| | - Chuan Shan
- The Department of Chemistry, University of South Florida, 4202 East Fowler Avenue, Tampa, Florida 33620, United States
| | - Lukasz Wojtas
- The Department of Chemistry, University of South Florida, 4202 East Fowler Avenue, Tampa, Florida 33620, United States
| | - Qilin Wang
- Institute of Functional Organic Molecular Engineering, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, China
| | - Xiaodong Shi
- The Department of Chemistry, University of South Florida, 4202 East Fowler Avenue, Tampa, Florida 33620, United States
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Heydt H, Eisenbarth P, Feith K, Urgast K, Maas G, Regitz M. Synthesis of Aminopyridazines from Aminocyclopropenylium Salts and Diazomethyl Compounds [1]. Isr J Chem 2013. [DOI: 10.1002/ijch.198600016] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Saalfrank RW, Ackermann E, Fischer M, Weiß B, Carrié R, Danion D, Peters K, Von Schnering HG. Synthese Und Eigenschaften Geminaler Bisphosphazide Und Bisphosphinimine Kristall-Und Molekülstruktur Von (δ)-3-Amino-2-Cyan-7-(Diphenylphosphinoyl)-5,5-Diphenyl-4-Aza-5λ5-Phospha-2,4-Heptadiensaure-Methylester. ACTA ACUST UNITED AC 2010. [DOI: 10.1002/bscb.19850940706] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Fronda A, Krebs F, Daucher B, Werle T, Maas G. Die reaktion von silyl-bis(trifluormethansulfonaten) mit diazoessigestern und diazomethyl-ketonen. J Organomet Chem 1992. [DOI: 10.1016/0022-328x(92)80001-e] [Citation(s) in RCA: 27] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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