Silver-Catalyzed Vinylogous Fluorination of Vinyl Diazoacetates
摘要:
A silver-catalyzed vinylogous fluorination of vinyl diazoacetates to generate gamma-fluoro-alpha,beta-unsaturated carbonyls is presented. Application of this method to the fluorination of farnesol and steroid derivatives was achieved.
Pd-Catalyzed Cross-Coupling of Potassium Alkenyltrifluoroborates with 2-Chloroacetates and 2-Chloroacetamides
摘要:
A protocol for the stereocontrolled synthesis of (E)- and (Z)-beta,gamma-unsaturated esters and amides is reported. 2-Chloroacetates as well as secondary and tertiary 2-chloroacetamides were successfully employed as electrophiles in the Suzuki-Miyaura cross-coupling reaction with potassium (E)- and (Z)-alkenyltrifluoroborates, affording the corresponding products in high yield.
Silver-Catalyzed Vinylogous Fluorination of Vinyl Diazoacetates
作者:Changming Qin、Huw M. L. Davies
DOI:10.1021/ol403017e
日期:2013.12.20
A silver-catalyzed vinylogous fluorination of vinyl diazoacetates to generate gamma-fluoro-alpha,beta-unsaturated carbonyls is presented. Application of this method to the fluorination of farnesol and steroid derivatives was achieved.
Pd-Catalyzed Cross-Coupling of Potassium Alkenyltrifluoroborates with 2-Chloroacetates and 2-Chloroacetamides
作者:Gary A. Molander、Thiago Barcellos、Kaitlin M. Traister
DOI:10.1021/ol401377q
日期:2013.7.5
A protocol for the stereocontrolled synthesis of (E)- and (Z)-beta,gamma-unsaturated esters and amides is reported. 2-Chloroacetates as well as secondary and tertiary 2-chloroacetamides were successfully employed as electrophiles in the Suzuki-Miyaura cross-coupling reaction with potassium (E)- and (Z)-alkenyltrifluoroborates, affording the corresponding products in high yield.