A Dissociation of 1,2,3-1H-Benzotriazole from 1,3-Bis(1,2,3-1H-benzotriazol-l-yl)-2-(p-methylphenyl)isoindoline in chloroform-d

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概要

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• Dissociation of 1,2,3-1H-Benzotriazole (Bt-H) from 1,3-Bis(benzotriazolyl)-2-(p-methylphenyl)isoindoline is investigated using chloroform-d of various manufacturers, and time-dependent product distribution patterns are monitored by 1 H NMR spectra. Some solvents are found appropriate to be used in the determination of isoindoline/2H-isoindole ratio. On the other hand, some are found to induce at once the dissociation of Bt-H from isoindoline and the polymerization of resulting 2H-isoiudole. The latter results can be attributed to quinonic materials in solvents, which are checked by the alkaline coloration reaction with o-dinitrobenzene/formaldehyde. Introduction 265 The utility of 1,2,3-1 H-benzotriazole (Bt-H) as the synthetic auxiliary to Manni

• 福井大学工学部の論文

著者

• Kitajima H

  Fukui Univ. Fukui Jpn

関連論文

• A Dissociation of 1,2,3-1H-Benzotriazole from 1,3-Bis(1,2,3-1H-benzotriazol-l-yl)-2-(p-methylphenyl)isoindoline in chloroform-d

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