Subscribe to RSS
Please copy the URL and add it into your RSS Feed Reader.
https://www.thieme-connect.de/rss/thieme/en/10.1055-s-00000084.xml
Download PDF
Synthesis 1990; 1990(1): 87-88
DOI: 10.1055/s-1990-26797
DOI: 10.1055/s-1990-26797
paper
© Georg Thieme Verlag, Rüdigerstr. 14, 70469 Stuttgart, Germany. All rights reserved.
This journal, including all individual contributions and illustrations published
therein, is legally protected by copyright for the duration of the copyright period.
Any use, exploitation or commercialization outside the narrow limits set by copyright
legislation, without the publisher's consent, is illegal and liable to criminal prosecution.
This applies in particular to photostat reproduction, copying, cyclostyling, mimeographing
or duplication of any kind, translating, preparation of microfilms, and electronic
data processing and storage.The Condensation of Cyclic Anhydrides with Schiff Bases. A Convenient Synthesis of 1,4,6-Triaryl-5-carboxy-2-oxo-1,2-dihydropyridines and 2,3-Diaryl-4-carboxy-1-oxo-1,2-dihydroisoquinolines
Further Information
Publication History
Publication Date:
17 September 2002 (online)
Condensation of Schiff bases of o-hydroxyarenecarboxaldehydes with 3-arylpentenedioic or homophthalic acid anhydrides was found to give 1,4,6-triaryl-5-carboxy-2-oxo-1,2-dihydropyridines and 2,3-Diaryl-4-carboxy-1-oxo-1,2-dihydroisoquinolines, respectively, instead of the expected tetrahydro products. The Schiff bases (used in excess) oxidize the intermediate tetrahydro products to the title compounds.