Use of benzyne promoters in the conversion of benzenediazonium acetate into benzyne
Abstract
The observations that 1,1-diphenylethylene and a series of related alkenes act as promoters for the formation of benzyne from benzenediazonium acetate even in the presence of furan, which otherwise promotes the competing radical reaction, leads also to an explanation of the hitherto puzzling promoting effect of tetraphenylcyclopentadienone.