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.