BENZOPYRANS .34. REACTIONS OF 3-SUBSTITUTED 1-BENZOPYRAN-4-ONE WITH N-PHENACYLPYRIDINIUM BROMIDE

Authors
GHOSH CK SAHANA S
Citation
Ck. Ghosh et S. Sahana, BENZOPYRANS .34. REACTIONS OF 3-SUBSTITUTED 1-BENZOPYRAN-4-ONE WITH N-PHENACYLPYRIDINIUM BROMIDE, Indian journal of chemistry. Sect. B: organic chemistry, including medical chemistry, 35(3), 1996, pp. 203-206
Citations number
16
Categorie Soggetti
Chemistry Inorganic & Nuclear
Journal title
Indian journal of chemistry. Sect. B: organic chemistry, including medical chemistry → ACNP
ISSN journal
03764699
Volume
35
Issue
3
Year of publication
1996
Pages
203 - 206
Database
ISI
SICI code
0376-4699(1996)35:3<203:B.RO31>2.0.ZU;2-9
Abstract
N-Phenacylpyridinium bromide in the presence of potassium carbonate gi ves the indolizine 10 and pyridinium salt 12 with the aldehyde 1 as we ll as the acid 2, azirine 14 with the nitrile 3, and zwitterion 16 wit h the ester 4. The pyridinium bromide 12 is converted into 10, and a m ixture of 5 and 10 on refluxing in pyridine and dimethylformamide, res pectively.