Substituted 3-hydroxy-delta-lactones from epoxides
申请人:Coates Geoffrey W.
公开号:US20100145046A1
公开(公告)日:2010-06-10
Catalysts and methods for the carbonylation of epoxides to substituted 3-hydroxy-δ-lactones and β-lactones are disclosed.
揭示了用于将环氧化合物羰基化为取代的3-羟基-δ-内酯和β-内酯的催化剂和方法。
Carbonylation of Epoxides to Substituted 3-Hydroxy-δ-Lactones
作者:John W. Kramer、Daniel Y. Joh、Geoffrey W. Coates
DOI:10.1021/ol702475e
日期:2007.12.1
Substituted 3-hydroxy-delta-lactones (3HLs) are valuable intermediates in the synthesis of pharmaceuticals and other biologically active-natural products. Herein we report the first example of the catalytic carbonylation of substituted homoglycidols to 3HLs using HCo(CO)(4). Upon optimization of the catalyst and reaction conditions, a functionally diverse set of 3HLs was prepared. Mechanistic insight was gained by observation of the carbonylation reaction using in situ IR spectroscopy, and we propose a mechanism that is consistent with previously studied epoxide carbonylation systems.
Molander, Gary A.; Etter, Jeffrey B.; Harring, Lori S., Journal of the American Chemical Society, 1991, vol. 113, # 21, p. 8036 - 8045
作者:Molander, Gary A.、Etter, Jeffrey B.、Harring, Lori S.、Thorel, Pierre-Jean