Aryltrimethylsilanes, ArSiMe3, react with sulphur trioxide in carbon tetrachloride to give the sulphonic esters, ArSO2OSiMe3, which undergo hydrolysis readily to the sulphonic acids ArSO3H. The reaction provides a means of introducing a sulpho group at a specific position of the aromatic ring; thus from m-tolyltrimethylsilane, m-toluenesulphonic acid is obtained in 80 % yield.
Aryltrimethylsilanes,ArSiMe 3,与
三氧化硫反应,在
四氯化碳,得到
磺酸酯,ARSO 2 OSiMe 3,其进行
水解容易到
磺酸ARSO 3 H.将反应在提供的特定位置引入磺基的方法芳香环;因而从米-tolyltrimethylsilane,中号在80%的产率得到甲
苯磺酸。