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Copper-catalyzed [3 + 1] cyclization of cyclopropenes/diazo compounds and bromodifluoroacetamides: facile synthesis of α,α-difluoro-β-lactam derivatives.


ABSTRACT: We have developed a novel copper-catalyzed cyclization of cyclopropenes/diazo compounds and bromodifluoroacetamides, efficiently synthesizing a series of α,α-difluoro-β-lactams in moderate to excellent yields under mild reaction conditions. This reaction represents the first example of [3 + 1] cyclization for the synthesis of β-lactams utilizing a metal carbene intermediate as the C1 synthon.

SUBMITTER: Zhang M 

PROVIDER: S-EPMC8442724 | biostudies-literature | 2021 Sep

REPOSITORIES: biostudies-literature

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Copper-catalyzed [3 + 1] cyclization of cyclopropenes/diazo compounds and bromodifluoroacetamides: facile synthesis of α,α-difluoro-β-lactam derivatives.

Zhang Mengru M   Li Hexin H   Zhao Jinbo J   Li Yan Y   Zhang Qian Q  

Chemical science 20210729 35


We have developed a novel copper-catalyzed cyclization of cyclopropenes/diazo compounds and bromodifluoroacetamides, efficiently synthesizing a series of α,α-difluoro-β-lactams in moderate to excellent yields under mild reaction conditions. This reaction represents the first example of [3 + 1] cyclization for the synthesis of β-lactams utilizing a metal carbene intermediate as the C1 synthon. ...[more]

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