(X=S) and acetylene derivative 17 on thermolysis via thiocarbonyl ylide, quantitatively. Pyrolysis of selenium analogue gave similar results. Allyl substituted 2-alkylidene-1,3,4-thiadiazolines 11a and 11b resulted in the novel formation of thiiranimine derivatives 19a and 19b and bicyclo[3.1.0]thiahexane derivatives 20a and 20bvia azathioallyl intermediates. Thiiranimine derivatives 19a and 19b were
Novel ring transformation in the reactions of 2-alkylidene-1,3,4-thiadiazolines and their selenium analogues
作者:Tokitoh Norihiro、Choi Nami、Ando Wataru
DOI:10.1016/s0040-4039(00)94445-9
日期:1990.1
Several new reaction modes were found in the thermolysis and photolysis of allyl substituted 2-alkylidene-l,3,4-thindinzolines and their selenium analogues. Photochemical reaction of 2-alkylidene-1,3,4-thiadiazolines resulted in a novel formation of thiiranimine derivatives via azathioallyl intermediates.