A novel synthesis of episulfoxides having the norbornane skeleton is possible by use of a rhodium catalyst to effect SO transfer from trans-stilbene episulfoxide to norbornene or norbornadiene. Analogous Rh2(OAc)4 catalysed sulfur transfer to these alkenes is also possible using propylene sulfide as the sulfur source. These methods did not give useful yields of products with alternative types of alkene substrate.
A novel type of chiral lithium amide base reaction, involving the rearrangement of certain types of symmetrical ring-fused episulfoxides, gives alkenyl sulfoxide products in up to 88% ee. The structures of the products, including absolute stereochemistry, were assigned based on X-ray crystal structure determinations.
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一种新的合成具有诺尔博烯骨架的环氧
亚硫酸酯的方法是通过使用
铑催化剂,使转式
苯乙烯环氧
亚硫酸酯向诺尔博烯或诺尔博烯二烯转移SO。类似的Rh2(OAc)4催化的
硫转移也可以使用
丙烯硫醚作为
硫源。这些方法对于其他类型的烯烃底物并未产生有用的产品产率。
一种新型的手性
锂胺碱反应,涉及某些类型对称环连接的环氧
亚硫酸酯的重排,能以高达88%的对映选择性获得烯基
亚硫酸酯产品。产品的结构,包括绝对立体
化学,是基于X射线晶体结构测定进行的指认。