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 MoreZhejiang Sanmei Chemical Industry Co., Ltd
Contact:86-579-87633213
Address:Huchu Industrial Zone, Qingnian Rd., Wuyi County, Zhejiang Prov., China.
website:http://www.tbbmed.com
Contact:86--21-50498136
Address:Room 6002, Building 7-1, No.160 Basheng Road,Pudong Area,Shanghai China
JinTan Pingsheng Chemical Co.,Ltd
Contact:+86-519-82828200
Address:NO.11Danfengxilu Road,Jintan City,Jiangsu,China
Contact:+1-973-357-0577
Address:10 Taft Rd.
website:http://www.truewingroup.com
Contact:86-311-66699812
Address:NO.600 ZHONGSHAN EAST ROAD SHIJIAZHUANG
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)
