toluene-4-sulfonic acid in benzene
15 h; Heating; Yield given. Yields of byproduct given. Title compound not separated from byproducts;
参考文献
Nishio, Takehiko; Omote, Yoshimori
Journal of the Chemical Society, Perkin Transactions 1: Organic and Bio-Organic Chemistry (1972-1999), 1981 , p. 934 - 938
