Direct synthesis of furans by 3 + 2 cycloadditions between rhodium(II) acetate stabilized carbenoids and acetylenes
作者:Huv M.L. Davies、Karen R. Romines
DOI:10.1016/s0040-4020(01)85968-8
日期:1988.1
Whan appropriate substituents are used, rhodium(II) acatate catalyzed decomposition of diazocarbonyls in the presence of acetylenes results in the formation of furans, derived from dipolar intermediates.
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