Terashima K, Kawasaki-Takasuka T, Yamazaki T. Construction of fully substituted carbon centers containing a heteroatom and a CF
3 group
via in situ generated
p-quinone methides.
Org Biomol Chem 2021;
19:1305-1314. [PMID:
33503080 DOI:
10.1039/d0ob02469d]
[Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
1,6-Conjugate additions of in situ generated δ-CF3-δ-substituted p-quinone methides have been achieved with a variety of heteronucleophiles under mild conditions, which led to facile and practical construction of fully substituted carbon centers including a heteroatom and a CF3 group. In particular, it was revealed that some amines themselves worked for efficient cleavage of the TBS protective group, and addition of a catalytic amount of an appropriate Brønsted acid was found to sometimes improve the progress of the desired process.
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