Thiol-Catalyzed Radical Decyanation of Aliphatic Nitriles with Sodium Borohydride
作者:Takuji Kawamoto、Kyohei Oritani、Dennis P. Curran、Akio Kamimura
DOI:10.1021/acs.orglett.8b00626
日期:2018.4.6
Radical decyanation of aliphaticnitriles was achieved in the presence of NaBH4 and a thiol. The reaction proceeds via a radical mechanism involving borane radical anion addition to nitrile to form an iminyl radical, which undergoes carbon–carbon cleavage. Reductive radical addition to acrylonitrile is followed by decyanation to give a two-carbon homologated product in a net radical ethylation reaction
REDUCED COENZYME Q10 DERIVATIVE AND METHOD FOR PRODUCTION THEREOF
申请人:KANEKA CORPORATION
公开号:US20150307440A1
公开(公告)日:2015-10-29
A reduced coenzyme Q
10
derivative represented by formula (1),
wherein R
1
and R
2
are each independently H or an alkoxycarbonyl group represented by formula (2),
and at least one of them is an alkoxycarbonyl group represented by the formula (2); in the formula (2), R
3
is an optionally substituted linear, branched, or cyclic alkyl group having 1 to 20 carbon atoms, an optionally substituted aryl group having 6 to 20 carbon atoms, or an optionally substituted heteroaryl group having 4 to 20 carbon atoms, and when R
3
is a group substituted with polyethylene glycol, the molecular weight of the polyethylene glycol is not more than 300.
The first iron-catalyzed cross-coupling reaction of alkyl halides with alkylaluminum reagents (alkyl–alkylNegishi coupling) is developed using an iron/bisphosphine catalyst system. The reaction sh...
Synthetic Radical Reactions Using Dibutylchlorogermane and Dibutylethoxygermane as Radical Mediators
作者:Katsukiyo Miura、Akira Hosomi、Kazunori Ootsuka
DOI:10.1055/s-2005-921927
日期:——
In the presence of Et3B as radical initiator, dibutylchlorogermane (1a) and dibutylethoxygermane (1b) reacted with bromo- and iodoalkanes at room temperature to give the corresponding alkanes in high yields. Hydrogermane 1a was more reactive than 1b. However, 1b worked as a better radical mediator in intermolecular radical addition of haloalkanes to electron-deficient alkenes.