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Communication | Regular issue | Vol 51, No. 3, 1999, pp.471-474
Published online, 1st January, 1970
DOI: 10.3987/COM-98-8409
Unusual Ring Contraction of 3H-Pyrano[2,3-c]quinolin-5(6H)-ones to Furo[2,3-c]quinolin-4(5H)-ones

Krishna C. Majumdar,* Anup K. Kundu, and Paritosh Biswas

*Department of Chemistry, University of Kalyani, Kalyani-741 235, W. B., India


A number of 1-aryloxymethyl-3H-pyrano[2,3-c]quinolin-5(6H)-ones (1a-h) on heating in N,N-diethylaniline for 8 h afforded 1-aryloxymethyl-2-methyl-furo[2,3-c]quinolin-4(5H)-ones (2a-h) in 66-79 % yields.