toluene-4-sulfonic acid in benzene 8 h; Heating; Title compound not separated from byproducts;
参考文献
Romanenko, V. D.; Ruban, A. V.; Chernega, A. N.; Povolotskii, M. I.; Antipin, M. Yu.; et al.
J. Gen. Chem. USSR (Engl. Transl.), 1989 , vol. 59, # 8.1 p. 1718 - 1725,1528 - 1534