Journal fur Praktische Chemie - Chemiker-Zeitung p. 363 - 367 (1995)
Update date:2022-08-04
Topics:
Peters, Dietmar
Pautet, Felix
Fakih, Hamid El
Fillion, Houda
Luche, Jean-Louis
(E)- and (Z)-vinyl sulfones isomerise under ultrasound irradiation in carbon tetrachloride in the presence of bromoform or bromotrichloromethane to give an E/Z equilibrium mixture via bromine radicals.Furthermore, the bromine radicals formed add to the C=C double bond (presumably of the Z isomer) to form vic-dibromo compounds.In pure CBrCl3 this addition reaction reaches a 99percent yield.In tetrahydrofurane/CBr4 (or CBrCl3) no isomerization is observed since the bromine radicals react probably with the THF.The addition is also favoured by highly efficient energy transmission.
View MoreTianjin Te-An Chemtech Co., Ltd.(expird)
Contact:+86-22-65378638
Address:A5-8, No.80 Haiyun Street, TEDA
website:http://www.josunpharma.com
Contact:+86-311-80715268 80766839
Address:No.39, Zhaiying Street, Shijaizhuang,Hebei,China
TAIZHOU XINGCHENG CHEMPHARM CO.,LTD.
Contact:0086-0576-88551200,88886292 ,88880039
Address:B Area. 10 Floor.Yaodadasha. 289#.Shifu Road.Taizhou.Zhejiang.China
Zhejiang Newfine Industry Co.,Ltd.
Contact:+86-573-82262042
Address:No.225,Dongqing Road, garoms@163.com
Contact:+86-512-69561895
Address:No.111, Building A4, 218 Xinghu Street, Suzhou Industrial Park, P. R. China
Doi:10.1021/ja038565t
(2004)Doi:10.1002/ejoc.200900350
(2009)Doi:10.1021/jp060586x
(2006)Doi:10.1002/ardp.200300816
(2004)Doi:10.1002/chem.201706115
(2018)Doi:10.1002/aoc.3898
(2018)
