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The [4+2]-cycloaddition of ketene containing both acyl and imidoyl groups to aldehyde: Synthesis,crystal and molecular structure of 1-p-bromophenyl-4-p-toluoyl-1, 3-dihydro-5H-[1,3]oxazino[4,3-c][1,4]benzoxazine-3,5-dione
Authors:Z G Aliev  A N Maslivets  O P Krasnykh  Yu S Andreichikov  L O Atovmyan
Institution:(1) Institute of Chemical Physics in Chernogolovka, Russian Academy of Sciences, 142432 Chernogolovka, Moscow Region, Russian Federation
Abstract:Thermal decarboxylation of 3-p-toluoyl-1,2-dihydro-4H-pyrrolo5,1-c]1,4]benzoxazine-1, 2,4-trione resulted in 2-oxo-2H-1,4-benzoxazin-3-yl(p-toluoyl)ketene; the latter under-goes 4+2]-cycloaddition withp-bromobenzaldehyde to form 1-p-bromophenyl-4-p-toluoyl-1, 3-dihydro-5H-1,3]oxazino4,3-c]1,4] benzoxazine-3,5-dione. The crystal and molecular structure of the latter has been studied by X-ray analysis.Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 9, pp. 1633–1636, September, 1993.
Keywords:imidoylketene  acylketene  cycloaddition  crystal and molecular structure
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