Doi R, Yabuta A, Sato Y. Palladium-Catalyzed Decarboxylative Alkynylation of α-Acyloxyketones by C(sp
3 )-O Bond Cleavage.
Chemistry 2019;
25:5884-5888. [PMID:
30805979 DOI:
10.1002/chem.201900582]
[Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2019] [Revised: 02/23/2019] [Indexed: 11/12/2022]
Abstract
Palladium-catalyzed decarboxylative alkynylation of α-acyloxyketones triggered by C(sp3 )-O bond cleavage is disclosed. The decarboxylation strategy featuring a neutral reaction condition enabled an unprecedent catalytic alkynylation of a ketone enolate. The reaction was applied to a variety of substrates, giving desired products in good yields. We successfully obtained X-ray crystallography of a new palladium-enolate intermediate that was synthesized by a reaction of [Pd(cod)(CH2 TMS)2 ] with XPhos and α-acyloxyketone at room temperature, indicating facile C(sp3 )-O bond disconnection.
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