Lavernhe R, Alexy EJ, Zhang H, Stoltz BM. Palladium-Catalyzed Enantioselective Decarboxylative Allylic Alkylation of Acyclic α-
N-Pyrrolyl/Indolyl Ketones.
Org Lett 2020;
22:4272-4275. [PMID:
32422045 PMCID:
PMC7608871 DOI:
10.1021/acs.orglett.0c01303]
[Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
The synthesis of fully substituted α-N-pyrrolyl and indolyl ketones via enantioselective palladium-catalyzed allylic alkylation is described. The acyclic ketones are alkylated in high yields with high enantioselectivities through the use of an electron-deficient phosphinooxazoline ligand, furnishing a highly congested and synthetically challenging stereocenter. The obtained alkylation products contain multiple reactive sites poised for additional functionalizations and diversification.
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