1309360-29-9Relevant articles and documents
Hafnium triflate as an efficient catalyst for direct Friedel-Crafts reactions of chromene hemiacetals
Wu, Yan-Chao,Li, Hui-Jing,Liu, Li,Demoulin, Nicolas,Liu, Zhe,Wang, Dong,Chen, Yong-Jun
, p. 907 - 912 (2011/06/19)
The direct Friedel-Crafts reaction of chromene hemiacetals with indoles, furans and sterically hindered anilines has been accomplished with high selectivity and excellent yields in the presence of a catalytic amount of hafnium triflate [Hf(OTf)4/sub