Ghosh D, Molla SA, Ghosh NN, Khamarui S, Maiti DK. Cu
II-Catalyzed cis-Selective Synthesis of Ketoepoxides from Phenacyl Bromides and Water.
J Org Chem 2023. [PMID:
37379249 DOI:
10.1021/acs.joc.2c02835]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/30/2023]
Abstract
A verity of α,β-ketoepoxides was synthesized using a CuII-catalyzed oxidative C-C/O-C coupled cyclization strategy with high yield and cis-selectivity. Water is used as the source of oxygen and phenacyl bromide as the carbon in the valuable epoxides. The self-coupling method was extended to cross-coupling between phenacyl bromides with benzyl bromides. A high cis-diastereoselectivity was observed in all the synthesized ketoepoxides. Control experiments and density functional theory (DFT) study were performed to understand the CuII-CuI transition mechanism.
Collapse