4 A molecular sieve; toluene-4-sulfonic acid in toluene
3 h; Heating;
参考文献
Al-Saleh, Fowzia S.; Khawaja, Ibtisam K. Al; Joule, John A.
Journal of the Chemical Society, Perkin Transactions 1: Organic and Bio-Organic Chemistry (1972-1999), 1981 , p. 642 - 645
Hassaneen, Hamdi M.; Hilal, Rifaat H.; Elwan, Nehal M.; Harhash, Abdelhamid; Shawali, Ahmad S.
Journal of Heterocyclic Chemistry, 1984 , vol. 21, p. 1013 - 1016