Reactions of trimethylsilyl isocyanate and isothiocyanate with 3-(dialkylamino)-2H-azirines. A facile synthesis of 1-unsubstituted 4-(dialkylamino)imidazolin-2-ones and 4-(dialkylamino)imidazoline-2-thiones
Reactions of trimethylsilyl isocyanate and isothiocyanate with 3-(dialkylamino)-2H-azirines. A facile synthesis of 1-unsubstituted 4-(dialkylamino)imidazolin-2-ones and 4-(dialkylamino)imidazoline-2-thiones
been prepared by the reaction of tertiary amides with phosgene. The toxicity of the latter led us to systematically investigate new synthetic routes towards α-chloro- and α-bromoenamines. The reactions of various halogenating agents (SOCl2, diphosgene, triphosgene, OPCl3, OPBr3) with tertiary amides followed by the addition of triethylamine have been studied. Thionyl chloride was found unsuitable for
HANDKE, ISABEL;SCHAUMANN, ERNST;KETCHAM, ROGER, J. ORG. CHEM., 53,(1988) N 22, C. 5298-5300
作者:HANDKE, ISABEL、SCHAUMANN, ERNST、KETCHAM, ROGER
DOI:——
日期:——
Reactions of trimethylsilyl isocyanate and isothiocyanate with 3-(dialkylamino)-2H-azirines. A facile synthesis of 1-unsubstituted 4-(dialkylamino)imidazolin-2-ones and 4-(dialkylamino)imidazoline-2-thiones