反应详情

Sulfuric acid (1.0 g, 10.2 mmol) was added to toluene (50.0 g) under the same conditions as Example 1. The analysis by HPLC showed 26% yield p-toluenesulfonic acid, 11% o-toluenesulfonic acid, and 1.3% m-toluenesulfonic acid (ratio p/o=2.4) for a total yield of 38.3%.