Zhang Q, Tang M. Regioselective Synthesis of Highly Functionalized Pyrazoles from N-Tosylhydrazones.
Org Lett 2019;
21:1917-1920. [PMID:
30829036 DOI:
10.1021/acs.orglett.9b00561]
[Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
A regioselective synthesis of highly functionalized pyrazoles from N-tosylhydrazones was developed. The reaction was general for a wide range of substrates and demonstrated excellent tolerance to a variety of substituents, and the method has been successfully applied to the formal synthesis of ibrutinib.
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