Reaction of cyclic sulfates of vic-diols with lithium iodide in acetone produced the corresponding olefins in excellent isolated yields at low temperature. Cyclic sulfates of trans-diols gave trans-alkenes exclusively. Cyclic sulfates of cis-diols gave a mixture of cis- and trans-alkenes. The reaction offers mild conditions and easy work-up procedures.
vic
-二醇的环状
硫酸酯与
碘化
锂在
丙酮中反应,在低温下以优异的分离产率产生相应的烯烃。反式二醇的环状
硫酸酯专门生成反式烯烃。顺式二醇的环状
硫酸酯得到顺式和反式烯烃的混合物。该反应条件温和,后处理程序简单。