An efficient protocol for the synthesis of furans through Rh(III)-catalyzed vinyl C–H activation from acrylic acids and α-diazocarbonyl compounds has been developed. The reaction features broad functional group tolerance and affords a series of furans in moderate to good yields. Moreover, no additives such as copper or silver salts are required. Some control experiments are performed to give insight
ASAOKA M.; SUGIMURA N.; TAKEI H., CHEM. LETT., 1977, NO 2, 171-174
作者:ASAOKA M.、 SUGIMURA N.、 TAKEI H.
DOI:——
日期:——
Organo-Catalyzed Regio- and Geometry-Specific Construction of β-Hydroxyl-α-vinyl Carboxylic Esters: Substrate Scope, Mechanistic Insights, and Applications
A green protocol has been developed for the synthesis of β-hydroxyl-α-vinyl carboxylicesters using aldehydes and α,β-unsaturatedesters bearing an activated γ proton as starting materials under Morita–Baylis–Hillman (MBH) reaction conditions. Diverse β-hydroxyl-α-vinyl carboxylicesters have been synthesized regiospecifically in moderate to good yields with only E geometric selectivity. Other remarkable