Synthesis of Arylpyrazolinylvinyloxazolidinodihydroindoles and Their Chromophoric Properties

Chem. J. Chinese Universities ›› 1992, Vol. 13 ›› Issue (10): 1262.

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Synthesis of Arylpyrazolinylvinyloxazolidinodihydroindoles and Their Chromophoric Properties

MA Yin-Min, LI Zhong-Jie

Department of Chemistry, Northwest University, Xi'an, 710069

Received:1991-09-23 Revised:1992-06-16 Online:1992-10-24 Published:1992-10-24

Abstract

Abstract: The reactions of DMF/POCl₃ with 1,5-diphenylpyrazoline,1,3,5-triphenylpyrazoline and l,5-diphenyl-3-styrylpyrazoline respectively afford three anticipated formylated compounds,which condense with l-hydroxyethyl-2,3,3-trimethyl-3H-indolium iodide,then are treated with base to give IV_a,IV_b and IV_c,which have not been found in literature.The primary experiments show that the arylpyrazolinyl styryloxazolidino [3,2-a]dihydroindoles have halochromic and piezochromic property.The properties make them suitable for manufacturing the acid-sensitive film and using as the pressure-sensitive pigment.

Key words: Pyrazoline, Oxazolidino[3,2-a]dihydroindole, Halochromism, Piezochromism

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MA Yin-Min, LI Zhong-Jie . Synthesis of Arylpyrazolinylvinyloxazolidinodihydroindoles and Their Chromophoric Properties[J]. Chem. J. Chinese Universities, 1992, 13(10): 1262.

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Synthesis of Arylpyrazolinylvinyloxazolidinodihydroindoles and Their Chromophoric Properties

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