Two Scalable Syntheses of 3-(Trifluoromethyl)cyclobutane-1-carboxylic Acid
作者:Zhiguo J. Song、Ji Qi、Marion H. Emmert、Jinxing Wang、Xuezhi Yang、Dong Xiao
DOI:10.1021/acs.oprd.0c00422
日期:2021.1.15
Two efficient synthetic methods for preparation of 3-(trifluoromethyl)cyclobutane-1-carboxylic acid are reported starting from readily available 4-oxocyclobutane precursors. These cyclobutanones can be converted to their CF3 carbinols upon treatment with TMSCF3 and a fluoride source. The bis-carboxylate system 9 was deoxygenated by treatment of Bu3SnH and provided desired compound 1 upon decarboxylation