Journal of the Chemical Society. Chemical communications p. 262 - 263 (1980)
Update date:2022-08-04
Topics:
Murphy, William S.
Wattanasin, Sompong
Cyclopropanation of the chalcone (3) with dimethylsulfonium ethoxycarbonylmethylide affords a 1:1 mixture of the cyclopropanyl keto-ester epimers (4) and (5); both stannic chloride and boron trifluoride etherate in nitromethane catalyse the stereoselective cyclisation of this mixture to the tetralone (2), the known podophyllotoxin precursor, in 51percent overall yield.
View MoreAnhui Redstar Pharmaceutical Corp., Ltd
Contact:+86-563-5120837
Address:Jingxian Industrial Development Zone, Anhui , China
Changzhou Kingyo Chemical Corporation Ltd.
website:http://www.kingyochem.com
Contact:+86-519-85105717
Address:19# Wuqing North Road, Changzhou , Jiangsu, China
SHAANXI FUJIE PHARMACEUTICAL CO.,LTD
website:http://www.fujiepharm.com
Contact:+86-29-63650906
Address:Yuanqu Yi Road, Qinghe Food Industrial Park, Sanyuan County, Shaanxi Province, China
PharmaResources(Kaiyuan)CO,.Ltd
Contact:+86-21-50720028
Address:No.3, Beihuan Road, Economic Development District, Kaiyuan City, Tieling City, Liaoning Province, China 112300
Contact:+86-571-87859231, 87859237, 87859239
Address:1606,Huarong Times Mansion, No.3880 Jiangnan Avenue, Binjiang District, Hangzhou, China, 310053
Doi:10.1023/B:RUBI.0000015776.60923.96
(2004)Doi:10.1039/c4ra17090c
(2015)Doi:10.1021/ol052214x
(2005)Doi:10.1021/ja056334b
(2006)Doi:10.1021/jo00316a022
(1981)Doi:10.1246/cl.1980.1223
(1980)
