Patent ID: 6037483
Filing Date: 2000-03-14
Classification: C07D,C08G

Abstract:
A method of making a mono-substituted fluorinated oxetane (FOX) monomer having the structure: ##STR14## where n is 1 to 3, R is methyl or ethyl, and R.sub.f is a linear or branched chain perfluorinated alkyl or isoalkyl having from 1 to 20 carbons or a oxa-perfluorinated polyether, having from 4 to about 60 carbons comprising the steps of:a) providing a mono-substituted oxetane premonomer having the structure: ##STR15## where R.sup.1 is selected from the group consisting of methyl and ethyl and X is a leaving group selected from the group consisting of bromo, chloro and iodo, said mono-substituted oxetane premonomer being mixed with water to provide an aqueous mixture of said mono-substituted oxetane premonomer;b) charging a reaction vessel with said aqueous mixture of said mono-substituted oxetane premonomer, a fluoroalcohol having the formula R.sub.f CH.sub.2 OH, wherein R.sub.f is a linear or branched chain perfluorinated alkyl or isoalkyl having from 1 to 20 carbons or a oxa-perfluorinated polyether, having from 4 to about 60 carbons, a phase transfer catalyst and a strong base to form a reaction mixture; andc) heating said reaction mixture until the reaction is complete and forms the FOX monomer as an organic layer.