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
收稿日期: 2013-08-27
修回日期: 2013-10-23
网络出版日期: 2013-11-05
基金资助
国家自然科学基金（No. 51273140）资助项目.
Synthesis and Characterization of 1,3,5,7-Tetraisocyanatoethyl-1,3,5,7-tetramethylcyclotetrasiloxane
Received date: 2013-08-27
Revised date: 2013-10-23
Online published: 2013-11-05
Supported by
Project supported by the National Natural Science Foundation of China (No. 51273140).
吴林 , 臧雄 , 阎四海 , 唐松青 , 李战雄 . 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[J]. 有机化学, 2014 , 34(3) : 596 -599 . DOI: 10.6023/cjoc201308024
1,3,5,7-Tetra(trimethylsiloxysilicatecarboxypropyl)-1,3,5,7-tetramethylcyclotetrasiloxane (2) was prepared by esterification 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.
Key words： synthesis; curtius rearrangement; cyclosiloxane; isocyanate
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