Bulletin of the Chemical Society of Japan p. 3337 - 3338 (1982)
Update date:2022-09-26
Topics:
Imafuku, Kimiaki
Shigenobu, Akihiro
Ogura, Makoto
3-Acetyltropolone (1) and 2-acetyl-7-methoxytropone (2a) reacted with o-aminophenol in ethanol to afford 2-acetyl-7-(o-hydroxyanilino)tropone (3).The reaction of 3-acetyl-2-methoxytropone (2b) gave 3-acetyl-2-(o-hydroxyanilino)tropone (5).The compounds 3 and 5 were cyclized to 6-acetyl- and 10-acetylcyclohepta<1,4>benzoxazines (4 and 6), respectively, by heating their acetic acid solutions in the presence of a trace amount of concentrated sulfuric acid.The compounds 4 and 6 were also obtained directly from 1 (or 2a) and 2b, respectively, by the reaction with o-aminophenol in acetic acid.The compound 5 exists as a tautomeric mixture with 5'.
View MoreContact:+86-10-67147360/67107388
Address:No.18 Guangming Zhongjie, Chongwen District, Beijing, 100061, China
Fuxin Jintelai Fluorin Chemical Co., Ltd.
Contact:+86-0418-8229599
Address:, 7th Huagong Road, Fluorine industry development zone (Yimatu Town,Fumeng County),Fuxin City, Liaoning Province, China
Contact:+86-13666670345
Address:Agricultural Development Zone, Haining, Jiaxing, Zhejiang
Contact:021-36356756
Address:Room601,Building No.14,280 Yangcheng Road,Shanghai
Contact:86-371-63655023
Address:No.85,jinshui road,zhengzhou,China
Doi:10.1039/b411449c
(2005)Doi:10.1016/j.tetlet.2004.11.158
(2005)Doi:10.1016/S0040-4039(00)98833-6
(1985)Doi:10.1016/j.tet.2004.12.006
(2005)Doi:10.1021/jo048708+
(2005)Doi:10.1021/ja00345a036
(1983)
