ISSN:
0021-8383
Keywords:
Chemistry
;
Organic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
The reaction of different 2-amino-4H-pyrans (1, 10) with guanidine affords 2,6-diaminopyrimidine derivatives (3). Treatment of the pyrans mentioned or their acetylated derivatives with trityl tetrafluoroborate does not yield pyrylium salts, and pyrid-2-one systems (8, 11, 14) are obtained from the 2-amino-4H-pyrans (1, 10, 13) on treatment with H2SO4/ethanol.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/prac.19863280106