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Communication | Regular issue | Vol 3, No. 12, 1975, pp.1065-1068
Published online, 1st January, 1970
DOI: 10.3987/R-1975-12-1065
Studies on the Reactivity of Isoquinoline and Related Compounds. I. Reaction of Isoquinoline N-Oxide with Diketene

Hiroshi Yamanaka,* Takao Sakamoto, and Takayuki Shiraishi

*Pharmaceutical Institute, Tohoku University, Aobayama, Sendai 980-8578, Japan


The reaction of isoquinoline N-oxide with diketene afforded three products whose structures were assigned 2,6-dimethyl-3-(1-isoquinolyl)-4-pyrone (II), 1-acetonyl-2-acetyl-4-acetoxy-1,2-dihydroisoquinoline (III), and 4-methyl-2-oxo-2H-benzo[a]quinolizine (IV), respectively.