route to diastereomerically pure (4S,5S)-4-vinyltetrahydro-1H-2-imidazolethiones via a novel domino reaction of [3,3]-sigmatropic rearrangement of chiral thiocyanates followed by stereoselective intramolecular amine addition to arising isothiocyanates is reported.
一种新的合成途径,通过手性
硫氰酸酯的[3,3]-σ重排的新多米诺反应,然后向立体异构体中添加非立体异构纯的(4 S,5 S)-4-
乙烯基四氢-1 H -2-
咪唑硫酮据报道有异
硫氰酸酯。