A method for producing a β-alkoxypropionamide including:
subjecting a β-alkoxypropionic acid ester represented by the following formula (I) and a polyol having two or more OH groups to a transesterification reaction in the presence of a basic catalyst, thereby to synthesize a transesterified polyol of a β-alkoxypropionic acid ester; and
subjecting the transesterified polyol and an amine represented by the following formula (II) to an amidation reaction, thereby to synthesize a β-alkoxypropionamide represented by the following formula (III):
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.
NITROGEN-CONTAINING COMPOUNDS SUITABLE FOR USE IN THE PRODUCTION OF POLYURETHANES
申请人:Evonik Degussa GmbH
公开号:US20180194889A1
公开(公告)日:2018-07-12
The present invention provides for the use of nitrogen compounds of formula (I) and/or of corresponding quaternized and/or protonated compounds for production of polyurethanes, compositions containing these compounds and polyurethane systems, especially polyurethane foams, which have been obtained using the compounds.