A ring-enlargement procedure for the conversion of 4,5-dihydro-1,3,4-thiadiazoles into dihydro-4H-1,3,4 thiadiazines
Abstract
A new ring expansion reaction of 4,5-dihydro-1,3,4-thiadiazoles, which leads to the formation of dihydro-1,3,4-thiadiazines, is reported.