2-Hydrazino-4,4-diphenyl-2-imidazoline, hydrobromide 、
4,4-diphenyl-imidazolidine-2-thione 、
溴乙烷 以
乙醇 为溶剂,
以to yield 5,5-diphenyl-2-ethylthio-2-imidazoline hydrobromide, which upon treatment with hydrazine的产率得到2-(ethylthio)-4,4-diphenyl-2-imidazoline, hydrobromide