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- Title
卤锂交换法合成茶基三甲氧基硅烷的研究.
- Authors
吴俊搬; 朱唱伟; 张 倩; 苗 鳄; 张森澜; 张群朝
- Abstract
Phenyllithium was synthesized by halogenated lithium exchange from n-butyllithium and bromobenzene, and then phenyltrimethoxylsilane was synthesized by nucleophile substitution reaction between phenyllithium and tetramethoxylsilane. The influencing factors of the synthesis of phenyllithium and phenyltrimethoxylsilane were discussed respectively, and whose structure was characterized by infrared spectroscopy and nuclear magnetic resonance spectroscopy. The results show that the optimal conditions for the synthesis of phenyllithium by halogenated lithium exchange are that n-butyl ether and tetrahydrofuran is as solvent, the volume ratio to n-butyl lithium solution is 1:2, the reaction time is 2h, and drop rate of n-butyl lithium is 2 mL/min. The optimal conditions for the synthesis of phenyltrimethoxylsilane are that n-butyl ether as the solvent during the synthesis of phenyllithium, tetramethoxylsilane is used as the nucleophilic substitution solvent, and the volume ratio of tetramethoxylsilane to n-butyl lithium is 3:1, the reaction temperature is 0-20 "C, the reaction time is 1h, the drop rate of phenyl lithium drop is 1. 5-2 mLl/min, and the yield of phenyl trimethoxylsilane is 78%.
- Subjects
INFRARED spectroscopy; TETRAHYDROFURAN; SUBSTITUTION reactions
- Publication
Silicone Material, 2023, Vol 37, Issue 1, p14
- ISSN
1009-4369
- Publication type
Article
- DOI
10.11941/j.issn.1009-4369.2023.01.003