New method of preparation of fluoro compounds via utilisation of ammonium and phosphonium perfluorocyclobutane ylides as fluorination reagents
作者:Sergej V. Pasenok、Marijn E. de Roos、Wolfgang K. Appel
DOI:10.1016/0040-4020(96)00019-1
日期:1996.2
Ammonium- and phosphoniumperfluorocyclobutane ylides (7–11), easily prepared from perfluorocyclobutene (1) and tertiary amines (2–4) or phosphines (5,6), smoothly react with primary or secondary alcohols (12–18) and carboxylic acids (19,20) with formation of alkyl fluorides (21–26) or acyl fluorides (27,28), respectively. A mechanism for the reaction is proposed.