Chemistry Letters p. 229 - 230 (1981)
Update date:2022-09-26
Topics:
Yamaoka, Hiroshi
Kashiwagi, Kouichi
Hanafusa, Terukiyo
The reactions of the methylenehomochromene (titled compound) (1) with orthoformates (2a,b) or acetals (2c-f) easily took place in the presence of anhydrous zinc chloride to give 5-alkoxyethyl-2,3-dihydro-1-benzoxepin derivatives (3a-f) in moderate to good yields.Unusually high reactivity of 1 may be due to homoaromatic stabilization in the reaction intermediate.
View MoreContact:+86-512-56795332
Address:No227 Shuanglong Rd, Fenghuang, Zhangjiagang
Changzhou Qidi Chemical Co., Ltd
website:http://www.czqdhg.com/
Contact:86-519-83382137
Address:128-1-16# HuaYuan Street,Hutang Town,Wujin District,Changzhou City,P.R.China.
Wuxi Zuping Food Science And Technology Co.,LTD.
Contact:+86-510-87210822
Address:Guanlin town
Shanghai Yuantai Chemical Products Co., Ltd
Contact:021--66129803
Address:Chengyin Road,Shanghai,China
Shanghai Rich Chemicals Co., Ltd
website:http://www.richchemical.com
Contact:+86-21-20255798
Address:Pudong Shanghai,China
Doi:10.1016/j.bmcl.2004.07.089
(2004)Doi:10.1021/jo00331a041
(1981)Doi:10.1021/ja01463a033
(1961)Doi:10.1016/j.tetlet.2006.12.112
(2007)Doi:10.1021/jo990180z
(1999)Doi:10.1021/jm00355a020
(1983)
