A Noncatalytic Approach to Hetaryl-Annulated 1,2,4-Thiadiazine-1,1-dioxides
作者:Artem Cherepakha、Vladimir O. Kovtunenko、Andrey Tolmachev、Oleg Lukin
DOI:10.1002/jhet.1029
日期:2013.8
out through a reaction of hetaryl‐sulfonyl chlorides with amidines under mild noncatalytic conditions. In the case of 2‐chloropyridine‐3‐sulfonyl chloride derivatives and 2,4‐dichlorothiazole‐5‐sulfonyl chloride open‐chain sulfonylated amidine intermediates were isolated and then subjected to the cyclization step. The reaction with 2,4‐dichloropyrimidine‐5‐sulfonyl chloride gave rise to the corresponding