[EN] 2-HYDROXYETHYL 2-OXO-1, 3-DIOXOLANE-4-CARBOXYLATES, THEIR PREPARATION AND USE<br/>[FR] 2-OXO-1,3-DIOXOLANE-4-CARBOXYLATES DE 2-HYDROXYÉTHYLE, LEUR PRÉPARATION ET UTILISATION
申请人:CONSTR RES & TECH GMBH
公开号:WO2015132080A1
公开(公告)日:2015-09-11
The present invention suggests 2-hydroxyethyl 2-oxo-1,3-dioxolane-4-carboxylates of formula (I): (I) wherein one of R1 and R2 can be hydrogen. In particular, R1 and R2, if not hydrogen, and in each case independently of one another, are selected from straight-chain, branched or cyclic C1-22-alkyl groups, preferably C1-12-alkyl groups, C6-12-aryl groups, C6-18-aralkyl groups and C6-18-alkaryl groups, wherein R1 and/or R2, in each case independently of one another, may comprise at least one additional functional group, selected from hydroxyl groups, ether groups, ester groups, epoxy groups, and double bonds, and wherein R2 may be substituted with up to 10, preferably with 1 to 5, and in particular with 1or 2 further 2-hydroxyethyl2-OXO-1,3- dioxolane-4-carboxylic groups. The 2-hydroxyethyl 2-oxo-1,3-dioxolane-4-carboxylates can be prepared by reacting 2-oxo-1,3-dioxolane-4-carboxylic acid with epoxides and can be used for the preparation of hydroxyurethanes through reaction with amines, such as amine hardeners. Moreover, they can also be used as end groups for the blocking of amines.
本发明提出了式(I)的2-羟乙基2-氧代-1,3-二噁烷-4-羧酸酯:(I),其中R1和R2中的一个可以是氢。特别地,如果R1和R2不是氢,那么它们分别独立地选自直链、支链或环状C1-22烷基、优选为C1-12烷基、C6-12芳基、C6-18芳基烷基和C6-18烷基芳基,其中R1和/或R2,分别独立地,可能包括至少一个额外的功能基团,选自羟基、醚基、酯基、环氧基和双键,且R2可能被取代为最多10个,优选为1到5个,特别为1或2个进一步的2-羟乙基2-氧代-1,3-二噁烷-4-羧酸基团。2-羟乙基2-氧代-1,3-二噁烷-4-羧酸酯可通过将2-氧代-1,3-二噁烷-4-羧酸与环氧化物反应制备,并可用于通过与胺类化合物(例如胺固化剂)反应制备羟基脲。此外,它们还可用作阻断胺类化合物的末端基团。