Compounds having the formula ##SPC1## Wherein R is alkyl, alkylene, phenyl, phenylene or alkyl substituted phenyl or phenylene, n is one or two and X is hydrogen, hydroxyl or oxygen, are good light stabilizers. These compounds are prepared, for example, from 1,3,3-trimethyl-3-azabicyclo[2.2.2]octane-5-ol and stearic acid to give 5-stearoyloxy-1,3,3-trimethyl-2-azabicyclo[2.2.2]octane which is converted by standard techniques to the corresponding 2-oxyl and 2-ol compounds.
化合物的
化学式为##
SPC1## 其中R为烷基,烷基链,苯基,苯基链或烷基取代的苯基或苯基链,n为一或二,X为氢,羟基或氧,是良好的
光稳定剂。这些化合物例如可以由1,3,3-三甲基-3-氮杂
双环[2.2.2]辛烷-5-醇和
硬脂酸制备得到5-
硬脂酸酯基氧基-1,3,3-三甲基-2-氮杂
双环[2.2.2]辛烷,然后通过标准技术转化为相应的2-氧化物和2-醇化合物。