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 MoreShanghai SMEC Trading Co., Ltd.
website:http://www.shanghaismec.com
Contact:+86-21-68811293
Address:ROOM 1101,NO.800 SHANGCHENG RD,SHANGHAI,CHINA
Taizhou Elitechemie MediPharma Technology Co.,Ltd.
Contact:+86-523-86810021
Address:Building G14,NO.1 Avenue,China Medical City, Taizhou, Jiangsu,China
Henan Techway Chemical Co.,Ltd.
website:http://www.techwaychem.com
Contact:+86-371-66380080
Address:No.27 Shunhe Road,
YanCheng LongShen Chemical Co.,Ltd.
Contact:+86-515-86668866
Address:No.13,Weiyi Road,Funing Aoyang Industrial Park
Shanghai Gsyn Chemical Co.,Ltd.
Contact:86-021-67158290
Address:86-021-67158291
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)
