Copper-catalyzed synthesis of 2,2-difluoro-1,3-benzoxathioles(selenoles) and their insecticidal activities: the selenium effect†
Abstract
An efficient catalytic method for the synthesis of 2,2-difluoro-1,3-benzoxathioles(selenoles) from the reaction of o-bromophenols with trifluoromethanethiolates or selenolates is disclosed. Some of the title compounds exhibited excellent insecticidal activities.