三(2,2,6,6-四甲基-4-氧基-哌啶基)-1,3,5-三嗪的合成研究

Study on Synthesis of Tris(2,2,6,6-Tetramethyl-4-Oxypiperidinyl)-1,3,5-Triazine

在催化剂存在下,以2,2,6,6-四甲基-4-羟基哌啶、三聚氯氰为原料合成三(2,2,6,6-四甲基-4-氧基-哌啶基)-1,3,5-三嗪,分别研究了原料配比、溶剂选型和催化剂用量等条件对合成三(2,2,6,6-四甲基-4-氧基-哌啶基)-1,3,5-三嗪反应的影响,确定了最佳操作条件。该方法合成三(2,2,6,6-四甲基-4-氧基-哌啶基)-1,3,5-三嗪的最佳操作条件是:n(三聚氯氰):n(2,2,6,6-四甲基-4-羟基哌啶)=0.1:0.36,n(氢氧化钠):n(2,2,6,6-四甲基-4-羟基哌啶)=0.4:0.1,溶剂为甲苯,催化剂的用量为0.6g。三(2,2,6,6-四甲基-4-氧基-哌啶基)-1,3,5-三嗪的收率可达到85.87%以上,三(2,2,6,6-四甲基-4-氧基-哌啶基)-1,3,5-三嗪纯度w(三(2,2,6,6-四甲基-4-氧基-哌啶基)-1,3,5-三嗪)=98.5%。

The catalyzed synthesis of tris（2,2,6,6-tetramethyl-4-oxypiperidinyl）-1,3,5-triazine by the reaction of 2,2,6,6-tetramethyl-4-piperidinol and cyanuric chloride was studied.The effect of materials ratio,solvent selection,and amounts of catalyst on the synthesis were studied,and the proper technological conditions were given as follows： n（cyanuric chloride）：n（2,2,6,6-tetramethyl-4-piperidinol）=0.1：0.36, n（sodium hydrate）：n（2,2,6,6-tetramethyl-4-piperidinol）=0.4：0.1, solvent is tolune, the amounts of catalysts is 0.6 g. The yield of tris（2,2,6,6-tetramethyl-4-oxypiperidinyl）-1,3,5-triazine can reach 85.87%.Purity of the tris（2,2,6,6-tetramethyl-4-oxypiperidinyl）-1,3,5-triazine isw（tris（2,2,6,6-tetramethyl-4-oxypiperidinyl）-1,3,5-triazine）=98.5%.