申请人:Ciba-Geigy Corporation
公开号:US03988363A1
公开(公告)日:1976-10-26
Ester and amides having the formula ##SPC1## Wherein R, R.sup.1 and R.sup.2 are independently lower alkyl or cycloalkyl groups, R.sup.3 is hydrogen, alkyl, cycloalkyl, alkylene, phenyl, phenyl substituted by alkyl groups, alkylthioethyl, thiobis-alkylene, alkyleneoxyalkylene, polyoxyalkylene or a polyvalent cyclic or acyclic hydrocarbon radical, R.sup.4 is hydrogen, lower alkyl, cycloalkyl, R.sup.5 is hydrogen, alkyl, phenyl, phenyl substituted by alkyl groups, alkylene, a polyvalent cyclic or acyclic hydrocarbon radical or alkyleneoxyalkylene, A is lower alkylene, m is 1 to 4 and n is 1 to 6. The esters are prepared by usual esterification procedures from a suitable alcohol and an acid of the formula III ##SPC2## or an acid halide or acid anhydride thereof. The higher alkyl esters can also be prepared from the lower alkyl ester, especially the methyl ester, by transesterification with a higher alkanol or polyol. The amides are prepared by usual amidation procedures by reacting a carboxylic acid of formula III, an acid chloride, anhydride or a lower alkyl ester thereof with the appropriate amine. The nitriles corresponding to acids of formula III are prepared as well as some malonate esters derived having the formula V. ##SPC3## The compounds are useful as stabilizers or organic materials, especially polyolefins, which deteriorate upon exposure to light and heat.
酯和酰胺的
化学式为##
SPC1##其中R、R.sup.1和R.sup.2分别是独立的低烷基或环烷基基团,R.sup.3是氢、烷基、环烷基、烷基烯、苯基、烷基
硫乙基、
硫代双烷基、烷基氧基烷基、聚氧基烷基或多价环烷基或非环烷基烃基,R.sup.4是氢、低烷基、环烷基,R.sup.5是氢、烷基、苯基、烷基苯基、烷基烯、多价环烷基或非环烷基烃基或烷基氧基烷基,A是低烷基烯,m为1到4,n为1到6。酯通过常规酯化程序从适当的醇和
化学式III的酸或其酸卤或酸酐制备而成。高烷基酯也可通过与较高烷醇或聚醇的酯交换反应,特别是与低烷基酯,尤其是甲酯进行制备。酰胺通过常规酰胺化程序,通过将
化学式III的
羧酸、酸
氯、酸酐或其低烷基酯与适当的胺反应制备而成。相应于
化学式III的酸的腈也被制备,以及一些具有
化学式V的马隆酸酯衍
生物。这些化合物可用作稳定剂或有机材料,特别是在光照和热力作用下会退化的聚烯烃的稳定剂。