Reaction of ethyl 4,4,4-trifluoroacetoacetate enolate with 3-bromo-1,1,1-trifluoroacetone: synthesis of 2,4-bis (trifluoromethyl) furan
作者:Jonathan O. Smith、Braja K. Mandal、Robert Filler、James W. Beery
DOI:10.1016/s0022-1139(96)03518-x
日期:1997.3
2 in DMSO solution to yield three products. Ethyl 2,4-bis(trifluoromethyl)-4-hydroxydihydro-3-furoate 3 is generated via C-acylation. The hydrated trifluoromethylketone 4 is formed by O-alkylation and 4 reacts further with 2 to give the di-O-alkylated ketone hydrate 5. Compound 3 undergoes dehydration to the furanderivative 6 on reaction with Ac2O-ZnCl2.