申请人:Ciba-Geigy Corporation
公开号:US03950382A1
公开(公告)日:1976-04-13
The reaction of one mole of a Mannich base corresponding to the formula ##SPC1## And one mole of a Mannich base corresponding to the formula ##SPC2## Wherein R.sub.1, R.sub.2, R.sub.4 and R.sub.5 are independently selected from alkyl groups having 1 to 6 carbon atoms and R is alkyl, preferably lower alkyl, with 1 mole of a carboxylic acid ester corresponding to the formula R.sub.3 CH.sub.2 COOR.sub.4 wherein R.sub.3 is --H, --CN or --COOR.sub.4 and R.sub.4 is an alkyl, thioether, oxyether or aralkyl group having up to 20 carbons in the presence of a catalytically effective amount of an alkaline catalyst is useful for preparing compounds corresponding to the formula ##SPC3## The compounds represented by the above formula are useful as stabilizers for synthetic resins, particularly polyolefins. Compounds of the above formula, when R.sub.3 is --CN are novel and may also be prepared by reacting 1 mole of ##SPC4## And 1 mole of ##SPC5## Wherein X is halogen with 1 mole of NCCH.sub.2 COOR.sub.4 in the presence of an alkali metal and an anhydrous inert organic solvent.
将一个摩尔的Mannich碱反应,其化学式为##SPC1##,和一个摩尔的Mannich碱反应,其化学式为##SPC2##,其中R.sub.1,R.sub.2,R.sub.4和R.sub.5分别为1至6个碳原子的烷基,而R是烷基,优选为低烷基,与一个摩尔的羧酸酯反应,其化学式为R.sub.3 CH.sub.2 COOR.sub.4,其中R.sub.3为--H,--CN或--COOR.sub.4,而R.sub.4为具有多达20个碳的烷基,硫醚,氧醚或芳基烷基,在碱性催化剂的存在下是制备符合以下化学式的化合物的有用方法##SPC3##上述化学式所代表的化合物可用作合成树脂的稳定剂,特别是聚烯烃。当R.sub.3为--CN时,上述化学式的化合物是新颖的,并且也可以通过在碱金属和无水惰性有机溶剂的存在下,将1摩尔的##SPC4##和1摩尔的##SPC5##反应,其中X为卤素,与1摩尔的NCCH.sub.2 COOR.sub.4反应来制备。