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Paper | Regular issue | Vol 26, No. 6, 1987, pp.1517-1520
Published online, 1st January, 1970
DOI: 10.3987/R-1987-06-1517
Condensation of 2-Pheny-2-oxazolin-5-one with o-Hydroxyacetophenoneimines

Pradeep K. Tripathy and Arya K. Mukerjee

*Department of Chemistry, Faculty of Science, Banaras Hindu University, Varanasi - 221005, India

Abstract

Condensation of 2-phenyl-2-oxazolin-5-one (1) with N-aryl-o-hydroxyacetophenoneimines (2a,b) gave - the corresponding dihydrocoumarins (2). On the other hand, the reaction of 1 with-2 (Y = C6H11N or n-BuN) afforded 3-N-benzoylamino-4-methylcoumarin (6) which underwent hydrolysis to give 3-amino-4-methylcoumarin (9) or 3-hydroxy-4-methylcoumarin (10), depending on the acidic or basic condition and the reaction temperature.