Journal of the Chemical Society. Perkin transactions I p. 653 - 656 (1981)
Update date:2022-09-26
Topics:
Maddocks, Peter J.
Pelter, Andrew
Rowe, Keith
Smith, Keith
Subrahmanyam, Chitti
Dialkylbromoboranes react steadily with hydroxide-free sodium hydride in diglyme, in the presence of alkenes, to give nearly quantitative yields of partly mixed trialkylboranes.The reaction proceeds too slowly to allow prior clean preparation of dialkylboranes, so reaction in the presence of alkenes possessing hydride-sensitive functional groups is not possible, although terminal alkynes can be hydroborated in situ by a modified experimental procedure.Potassium hydride reacts much more rapidly with dialkylbromoboranes, the reactions being complete within minutes at 20 deg C, but the yields are lower.Addition of dibenzo-18-crown-6 leads to an increase in yield but the results are still inferior to those obtained using sodium hydride.Reaction of dialkylbromoboranes with lithium hydride is very sluggish.
View MoreNaturalin Bio-Resource Co., Ltd
website:http://www.naturalin.com
Contact:+86-0731-84430651
Address:B1-402, Lu-Valley Enterprise Square.No.27 Wenxuan Road. Lu-Valley Hi-Tech District.
Fusilin chemical science & technology co., ltd.
Contact:532-80698166/86057573, +86-400-669-7885
Address:School of Material Science & Engineering, Shandong Uinversity of Science & Technology, Huangdao Zone, Qindao, Shandong
Zhenjiang Haitong Chemical Industry Co., Ltd.
Contact:+86 (511) 8448-0369
Address:Baoyan Town, Dantu District, Zhenjiang City, Jiangsu, China
Contact:732.938.2777
Address:5012 Industrial Road Farmingdale, NJ 07727
Shanghai Taibao Pharmaceutical Technology Co., Ltd(expird)
Contact:021-52217366
Address:shanghai
Doi:10.1021/jo01295a042
(1980)Doi:10.1039/a804956d
(1998)Doi:10.1016/j.jorganchem.2012.05.040
(2012)Doi:10.1021/acs.orglett.6b01078
(2016)Doi:10.1021/ic50208a016
(1980)Doi:10.1055/s-0029-1216790
(2009)
