Domino reactions between 1,1-dilithio-3,3-diphenylallene and nitriles resulted in the formation of products containing up to four nitrile molecules, representing the highest number to date of nitrile molecules involved in the formation of unambiguously characterized oligomers. The unusual domino process reported constitutes a new method for the synthesis of imidazoles. The solid-state structures of
(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
Effect of Silyl Substituent on Thermal Isomerization of Allene Episulfide. A New Aspect in Thioxyallyl Intermediate
作者:Norihiro Tokitoh、Nami Choi、Wataru Ando
DOI:10.1246/cl.1987.2177
日期:1987.11.5
on the thermal isomerization of 1,1-bis(trimethylsilyl)-3,3-diphenylallene 2-episulfide showed an attractive accelerating effect of silyl substituents attributable to the partial ionic nature of thioxyallyl intermediate.