ophenone giving α-phenylthio-α-methylthio ketones. The methylthio transfer reaction between the ketone α-positions was reversible and at equilibrium, and the methylthio group was transferred in preference to the phenylthio group. The reaction of tertiary alkyl methylthiomethyl ketones proceeded in high yields; the reaction of diastereomeric 4-(tert-butyl)-2-phenylthiocyclohexanones gave an axial 2-methylthiolated
在催化量的RhH(PPh 3)4和1,2-双(二苯基正膦)
乙烷(dppe)存在下,将α-苯
硫酮与对
氰基-α-甲基
硫代
苯乙酮进行
甲硫醇化,得到α-苯
硫基-α-甲
硫基酮。酮α-位之间的甲
硫基转移反应是可逆的,并且处于平衡状态,甲
硫基优先于苯
硫基转移。叔烷基甲
硫基甲基酮的反应产率高。非对映异构体4-(叔丁基)-2-苯基
硫代环己酮的反应得到轴向的2-甲基
硫醇化产物。