Synthesis and Reactions of 2-Alkylidene-1, 3, 4,-thiadiazolines and Their Selenium Analogues

N Choi, N Tokitoh, M Goto, W Ando

Index: Choi, Nami; Tokitoh, Norihiro; Goto, Midori; Ando, Wataru Tetrahedron, 1993 , vol. 49, # 6 p. 1189 - 1202

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Citation Number: 4

Abstract

2-Alkylidene-1, 3, 4-thiadiazoline 11a gave thioketone 16 (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 ...