toluene-4-sulfonic acid in 1,4-dioxane; water T=55°C; 0.166667 h; Yield given. Yields of byproduct given. Title compound not separated from byproducts;
参考文献
Nemoto, Hideo; Wu, Xiao-Ming; Kurobe, Hiroshi; Minemura, Kayoko; Ihara, Masataka; at. al.
Journal of the Chemical Society, Perkin Transactions 1: Organic and Bio-Organic Chemistry (1972-1999), 1985 , p. 1185 - 1190