Studies on Novel Heterocyclic Ring Systems. Reactions of 2-[<i>p</i>-(N,N'-Dimethylaminophenyl)]-naphtho[2,1-<i>b</i>]2,3-dihydropyran-4-one with 2-Mercaptoaniline and Formation of Naphtho[2,1-<i>b</i>]-pyrano[4,3-<i>c</i>]pyridazin-3-one Derivative
作者:M. R. Mahmoud
DOI:10.1080/00397919408010215
日期:1994.7
Abstract The reaction of 2-[p-(N,N'-dimethylaminophenyl)]- naphtho [2,1-b] - 2,3 - dihydropyran -4- one 1 with 2- mercaptoaniline 2 has been investigated. The yet unreported 6-(p-N,N'-dimethylaminophenyl)-naphtho [2,1-b]- pyrano- [3,4-b] benzo- (4H) -1,4-thiazine 3 system has been synthesised and characterised on the basis of spectral and analytical data. A novel synthestic route to naphtho (2,1-b)-pyrano