HH3CCCCH3HKMnO4H3COOHHOMnOCH3H2OH3CHHOHCH3OHCH3HOHHOHCH3
CH3H2OH3CHHOHCH3OHCH3HOHHOHCH3HH3CCCCH3HKMnO4H3COOHHOMnO
*反应结果为一对对映体，组成外消旋体
8．试写出反－3－己烯与溴加成反应的历程，并指出产物有无旋光性。
C2H5C2H5CCHC2H5?+H+BrBrC2H5?-BrHHCH3①C②C2H5BrH
所得产物为内消旋体，无旋光性。BrBr①HC2H5BrC2H5H②HC2H5BrHHC2H5BrBrC2H5C2H5HHBrBrC2H5