Citation: Li Gang REN, Xiang Yang LIU, Yi GU. Synthesis of a Novel Diamine 4-[(4'-Butoxyphenoxy)carbonyl]-phenyl-3", 5"-diaminobenzoate and Corresponding Polyimides[J]. Chinese Chemical Letters, ;2006, 17(11): 1511-1514. shu

Synthesis of a Novel Diamine 4-[(4'-Butoxyphenoxy)carbonyl]-phenyl-3", 5"-diaminobenzoate and Corresponding Polyimides

State Key Laboratory of Polymeric Materials Engineering, College of Polymer Science and Engineering, Sichuan University, Chengdu 610065

Received Date: 11 September 2006

Fund Project: We are grateful for the financial support from the National Natural Science Foundation of China (No. 50433010) and Doctoral Fund of Ministry of Eduction of China (No. 20040610028).

A novel diamine 4-[(4'-butoxyphenoxy)carbonyl]phenyl-3", 5"-diaminobenzoate (BCDA)was synthesized from 4-butoxyphenol, 4-hydroxybenzoic acid and 3, 5-dinitrobenzoic acid through four main intermediates, and a series of polyimides were also synthesized. All the intermediates and the final product were characterized by FTIR and ¹H-NMR. The key step in synthesis route is selective hydrolyzation of two ester groups in 4-butoxyphenyl-4'-acetoxybenzoate, by adjusting the reaction temperature and the concentration of ammonia, shorteding the reaction time. The properties of the novel polyimides, such as the aggregation structures, glass transition temperature, solubility and the pretilt angles, were carried out.
- Synthesis,
- polyimides,
- side chain,
- alignment film
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