Process for Productions of Formamides and Acrylamides
申请人:SHENZHEN UV-CHEM TECH INC
公开号:US20200048186A1
公开(公告)日:2020-02-13
This invention relates to performance chemicals field, it discloses a novel and green process for simultaneous productions of formamides as well as mono- and multi-functional acrylamides under very mild conditions and with high efficiency. These substances are widely useful as industrial solvents or raw materials, in particular acrylamides are important olefinically-unsaturated polymerizable monomers in photo-curing materials.
Tandem conjugate addition-aldol reaction to α,β-unsaturated esters and ketones using titanium amide
作者:Akira Hosomi、Toshiharu Yanagi、Makoto Hojo
DOI:10.1016/s0040-4039(00)79926-6
日期:1991.5
Titanium dialkylamide, readily available, adds to a α,β-unsaturated esters and ketones in a conjugateaddition mode to give ester and ketone enolates, respectively, which are successively quenched with electrophiles such as aldehydes and acetals. The aldol products can be readily converted to the corresponding deaminated or dehydrated derivatives selectively.
The selective preparation of n-propylamines by the rhodium catalysed reaction of ethylene and syngas with alkylamines
作者:M.D. Jones
DOI:10.1016/0022-328x(89)87190-6
日期:1989.5
The aminomethylation of ethylene with a primary amine has been shown to provide a highly selective route to n-propylamines; the rhodium catalysed reaction of n-propylamine with ethylene and syngas (2/1, H2/CO) affords di-n-propylamine with 98% selectivity (with respect to ethylene). The reaction of amines of the type RR1NH with the ethylene/syngas mixture and a rhodium catalyst provides a highly selective
已显示乙烯与伯胺的氨基甲基化为正丙胺提供了高度选择性的途径。n-丙胺与乙烯和合成气(2 / 1,H 2 / CO)的铑催化反应得到二正丙胺(相对于乙烯)具有98%的选择性。RR 1 NH型胺与乙烯/合成气混合物和铑催化剂的反应为正丙胺RR 1 NPr(R = Pr,R 1 = H; R = t-Bu)提供了高度选择性和通用的途径,R 1 = H; R = n-Bu,R 1 = H; R = C 8 H 17,R 1 = H,R = R 1 = Pr; R = HOCH 2 CH在图2中,R 1= H,R = PhCH(OH)CH 2,R 1= H)。