ISSN:
0021-8383
Keywords:
Chemistry
;
Organic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Description / Table of Contents:
3-Amino-furo[2,3-b]pyridinesThe reaction of the 3-cyano-2-pyridones 1 with α-halogen carbonyl compounds yields 2-alkoxy-pyridines 2 which can be cyclized in the presence of sodium ethoxide to form 3-amino-furo[2,3-b]pyridines 3. From 4,6-dimethyl-3-cyano-2-pyridone, mixtures of N- and O-alkylated compounds are obtained which by cyclization in addition to 3-amino-furopyridines 6 yield indolizinones 7. From 3, pyridofuro-pyrimidines 9 can be synthesized.
Notes:
Die 6-substituierten 3-Cyan-pyridone-(2) 1 reagieren mit α-Halogen-carbonylverbindungen zu 2-Alkoxypyridinen 2, die in Gegenwart von Natriumalkoholat zu substituierten 3-Amino-furo[2.3-b]pyridinen 3 cyclisieren. Aus dem 4.6-Dimethyl-3-cyan-pyridon-(2) erhält man dabei Gemische der N- und O-Alkylverbindungen, die bei der Cyclisierung 3-Amino-furopyridine 6 neben Indolizinonen 7 liefern. 3 eignet sich zur Darstellung von Pyridofuropyrimidinen 9.
Additional Material:
2 Tab.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/prac.19763180216
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