2α- and 2β-Tropanols were synthesized by 1,3-dipolar cycloaddition of phenyl vinyl sulfone and 1-methyl-3-oxidopyridinium regio- and stereoselectively. The method was extended to a preparation of 6α-fiuoro-2β-tropanol from 1-(benzenesulfonyl)-1-fluoroethene.
通过
苯基乙烯基砜和 1-甲基-3-氧化
吡啶鎓的 1,3-二极环加成反应,对 2α- 和 2β-Tropanols 进行了调节性和立体选择性合成。该方法还扩展到以 1-(苯磺酰基)-1-
氟乙烯为原料制备 6α-
氟-2β-
丙醇。