1,3,5,7-四异氰氧基乙基-1,3,5,7-四甲基环四硅氧烷合成及结构表征

Synthesis and Characterization of 1,3,5,7-Tetraisocyanatoethyl-1,3,5,7-tetramethylcyclotetrasiloxane

以丙烯酸和1,3,5,7-四甲基环四硅氧烷(D4H)等为初始原料,经酯化、硅氢加成反应制得1,3,5,7-四(三甲基硅氧羰丙基)-1,3,5,7-四甲基环四硅氧烷(2),水解2制得1,3,5,7-四羧丙基-1,3,5,7-四甲基环四硅氧烷(3),3经Staudinger反应和Curtius重排反应制得1,3,5,7-四异氰氧基乙基-1,3,5,7-四甲基环四硅氧烷(4).反应总收率为14.5%,化合物结构经1H NMR,29Si NMR,IR,MS和HRMS确证.

1,3,5,7-Tetra（trimethylsiloxysilicatecarboxypropyl）-1,3,5,7-tetramethylcyclotetrasiloxane （2） was prepared by es-terification and hydrosilylation reaction using acrylic acid and 1,3,5,7-tetramethylcyclotetrasiloxane （D4H） as raw materials. 2 was hydrolyzed to obtain 1,3,5,7-tetracarboxypropyl-1,3,5,7-tetramethylcyclotetrasiloxane （3） followed by Staudinger reaction and Curtius rearrangement reaction to give 1,3,5,7-tetraisocyanatoethyl-1,3,5,7-tetramethylcyclotetrasiloxane （4） with the total yield of 14.5%. The structure of cyclosiloxane was characterized by 1H NMR, 29Si NMR, IR, MS and HR-MS techniques.