POLYMERIZATION OF N,N'-(PYROMELLITOYL)-BIS-L-LEUCINE DIACID CHLORIDE WITH HYDANTOIN DERIVATIVES BY MICROWAVE IRRADIATION*

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POLYMERIZATION OF N,N'-(PYROMELLITOYL)-BIS-L-LEUCINE DIACID CHLORIDE WITH HYDANTOIN DERIVATIVES BY MICROWAVE IRRADIATION*

Papers | Updated：2021-06-21

- POLYMERIZATION OF N,N'-(PYROMELLITOYL)-BIS-L-LEUCINE DIACID CHLORIDE WITH HYDANTOIN DERIVATIVES BY MICROWAVE IRRADIATION*
- Vol. 22, Issue 4, Pages: 343-348(2004)
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- Published：20 August 2004
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POLYMERIZATION OF N,N'-(PYROMELLITOYL)-BIS-L-LEUCINE DIACID CHLORIDE WITH HYDANTOIN DERIVATIVES BY MICROWAVE IRRADIATION*[J]. 2004, 22(4): 343-348.
DOI：

POLYMERIZATION OF N,N'-(PYROMELLITOYL)-BIS-L-LEUCINE DIACID CHLORIDE WITH HYDANTOIN DERIVATIVES BY MICROWAVE IRRADIATION*[J]. 2004, 22(4): 343-348. DOI：

摘要

Facile and rapid polycondensation reactions of N

N'-(pyromellitoyl)-bis-L-leucine diacid chloride 1 with eight different derivatives of hydantoin compounds 2a-h were developed by using a domestic microwave oven in the presence of a small amount of polar organic medium such as o-cresol. The polycondensation reactions proceeded rapidly

compared with the conventional solution polycondensation

and was completed within 7-10 min

producing a series of novel optically active poly(amide-imide)s 3a-h with high yield and inherent viscosity of 0.35-0.65 dL/g. All of the above polymers were fully characterized by FT-IR

elemental analyses

inherent viscosity (ηinh)

solubility test and specific rotation. Some structural characterization and physical properties of these optically active poly(amide-imide)s are reported.

Abstract

Facile and rapid polycondensation reactions of N

compared with the conventional solution polycondensation

and was completed within 7-10 min

producing a series of novel optically active poly(amide-imide)s 3a-h with high yield and inherent viscosity of 0.35-0.65 dL/g. All of the above polymers were fully characterized by FT-IR

elemental analyses

inherent viscosity (ηinh)

solubility test and specific rotation. Some structural characterization and physical properties of these optically active poly(amide-imide)s are reported.

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