Quinazoline, Pyrazolo[1,5-c]Quinazoline and Spiro Quinazoline Dimers from the Reaction of 2-Aminoacetophenone Hydrazones with Triphosgene

descriptionPublicationkeyboard_double_arrow_right Article , Other literature type 01 Dec 2002 English Publisher:SAGE PublicationsJournal:Journal of Chemical Research, volume 2,002, pages 587-588 (issn: 1747-5198, eissn: 2047-6507,

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Authors: H. Z. Alkhathlan; M. A. Al‐Saad; H. M. Al‐Hazimi; K. A. Al‐Farhan; A. A. Mousa;

doi: 10.3184/030823402103170952 , 10.1002/chin.200322154

Quinazoline, Pyrazolo[1,5-c]Quinazoline and Spiro Quinazoline Dimers from the Reaction of 2-Aminoacetophenone Hydrazones with Triphosgene

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Abstract

The reaction of hydrazones of 2-aminoacetophenone with triphosgene in dichloromethane or benzene in the presence of triethylamine gave quinazolines, pyrazolo[1,5-c]quinazoline and spiro quinazoline dimers. The latter compounds are being reported for the first time. In addition, a 4,4-disubstituted quinazoline derivative is prepared and its x-ray crystal structure is reported.

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King Saud University
Saudi Arabia

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