Ring opening in di[1,2,3]triazolo-[1,3,6]thiadiazepine and -[3,1,5]benzothiadiazepine in reactions with butyllithium
作者:Natalya N. Volkova、Evgeniy V. Tarasov、Mikhail I. Kodess、Wim Dehaen、Vasiliy A. Bakulev
DOI:10.1070/mc2002v012n04abeh001625
日期:2002.1
Di[1,2,3]triazolo[1,5-a:5',1',-d][3,1,5]benzothiadiazepine treated with butyllithium undergoes ring opening via the thiophilic addition of butyllithium at the C-S bond, whereas 9,10-dihydrodi[1,2,3]triazolo[1,5-b:5',1'-f][1,3,6]thiadiazepine mainly undergoes lithiation of the methylene group followed by C-N bond cleavage to give 1-vinyltriazolyl sulfide.