N-Bis(methylthio)methylene Derivatives. VII. Syntheses and Reactions of Synthetic Equivalents of New 1,3-Dipolar Reagents Using N-Bis(methylthio)methylene Derivatives.
[3+2]cycloaddition; N-(trimethylsilylmethyl)isothiourea, synthetic equivalent; 1,3-dipolar reagent, iminoazomethine ylid N-(Trimethylsilylmethyl)isothioureas, readily prepared by the reaction of N-bis(methylthio)methylene-cyanamide or -p-toluenesulfonamide with (trimethylsilylmethyl)amine, followed by N-alkylation, have been found to be a synthetic equivalent of iminoazomethine ylid. Treatment of these