An Improved Process for the Preparation of an α,α-Difluorosulfonylisoxazoline Herbicide

Chimia (Aarau). 2014;68(6):442-5. doi: 10.2533/chimia.2014.442.

Abstract

An efficient synthesis of a difluorosulfone-containing herbicide has been achieved by selective reductive silylation of a symmetrical bis(trifluoromethyl)-1,2,3-triazole. Subsequently, a fluoride-induced reaction led to a difluoromethyl anion equivalent, which was reacted with a sulfur electrophile leading ultimately to the key difluorosulfide moiety.