developed and used as recyclablecatalysts for the aza-Michael addition at room temperature without any organic solvent. [DABCO–PDO][OAc] was found to be the most efficientcatalyst, and the amount of catalyst was only 10 mol %. Various amines reacted with a wide range of α,β-unsaturated amides, smoothly affording target products in good to excellent yields within hours. Moreover, the catalyst could be reused
Process for producing derivatives of hydroxy compounds, the products and
申请人:——
公开号:US04778880A1
公开(公告)日:1988-10-18
A process for producing novel water-soluble compounds of the formula (HO).sub.m --A--(OCH.sub.2 NR.sup.1 COR).sub.p comprises forming a dispersion of an aqueous solution of a substrate A(OH).sub.n which is an alcohol or, preferably, a carbohydrate and a derivatising reagent HOCH.sub.2 NR.sup.1 COR.sup.2 in a water immiscible liquid and azeotroping the dispersion to remove water and thereby to drive the condensation reaction. The process can achieve high degrees of substitution and is of particular use in the production of water-soluble unsaturated polymersable products, preferably methylol acrylamide derivatives, in a process in which the aqueous dispersed phase contains a water-soluble polymerisation inhibitor. The unsaturated products may be used as cross-linking monomers in many aqueous polymerisation reactions, for instance an aqueous composition containing them with a water-soluble photo-initiator system including a dye are used as curing inks.
Process for producing derivatives of hydroxy compounds, the products and their use
申请人:ALLIED COLLOIDS LIMITED
公开号:EP0177296A2
公开(公告)日:1986-04-09
A process for producing novel water-soluble compounds of the formula (HO)m -A- (0CH2NR1COR)P comprises forming a dispersion of an aqueous solution of a substrate A(OH)n which is an alcohol or, preferably, a carbohydrate and a derivatising reagent HOCH2NR1COR2 in a water immiscible liquid and azeotroping the dispersion to remove water and therby to drive the condensation reaction. The process can achieve high degrees of substitution and is of particular use in the production of water-soluble unsaturated polymerisable products, preferably methylol acrylamide derivatives, in a process in which the aqueous dispersed phase contains a water-soluble polymerisation inhibitor. The unsaturaed products may be used as cross-linking monomers in many aqueous polymerisation reactions, for instance an aqueous composition containing them with a water-soluble photo-initiator system including a dye are used as curing inks.