C-Formylation of some 2 (3H)-benzazolones and 2H-1, 4-benzoxazin-3 (4H)-one

…, VB Kalcheva, AT Antonova

Index: Petrov, Ognyan I.; Kalcheva, Veneta B.; Antonova, Antonina Ts. Collection of Czechoslovak Chemical Communications, 1997 , vol. 62, # 3 p. 494 - 497

Full Text: HTML

Citation Number: 9

Abstract

Abstract The C-formylation of 1, 3-dimethyl-2 (3H)-benzimidazolone and 4-methyl-2H-1, 4- benzoxazin-3 (4H)-one was performed using 1, 1-dichloromethyl methyl ether at the Friedel- Crafts reaction conditions. The formylation of 3-methyl-2 (3H)-benzoxa-and-thiazolone at the 6-position was carried out by modified Duff's method with hexamethylenetetramine in trifluoroacetic acid.