Journal
ACS CATALYSIS
Volume 12, Issue 19, Pages 12036-12044Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acscatal.2c03623
Keywords
copper catalysis; propargylic alkylation; semipinacol rearrangement; quaternary stereocenter; cyclopentanone
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Funding
- National Natural Science Foundation of China [22071242, 21871260]
- Strategic Priority Research Program of the Chinese Academy of Sciences [XDB20000000]
- Fujian Natural Science Foundation [2021J01522]
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The merger of asymmetric semipinacol-type rearrangement and transition-metal-catalyzed propargylic alkylation has successfully produced enantioenriched cyclo- and heterocyclopentanones with alpha-alkynylated quaternary stereocenters. These products are challenging to obtain using other methods and have demonstrated their synthetic value in further transformations. This work introduces a distinctive mode of inducing asymmetric 1,2-carbon migration and expands the scope of propargylic substitution.
The merger of two powerful synthetic strategies, i.e., asymmetric semipinacol-type rearrangement and transition-metal-catalyzed propargylic alkylation, has been achieved, delivering a range of enantioenriched cyclo- and heterocyclopentanones with alpha- alkynylated quaternary stereocenters. Such types of products are challenging to obtain using other methods, and their synthetic value has been demonstrated in a variety of further transformations. The work represents a distinctive mode inducing asymmetric 1,2-carbon migration and further expands the scope of propargylic substitution.
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