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1HNMR,29SiNMR,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.