作者:Arnone, Alberto、Cornaggia, Nicoletta、Lorenzoni, Carolina、Merlini, Lucio
DOI:——
日期:——
TRYPTAMINES, CARBOLINES, AND RELATED COMPOUNDS: PART IV. ATTEMPTED SYNTHESIS OF THE PHYSOSTIGMINE RING SYSTEM
作者:R. A. Abramovitch
DOI:10.1139/v58-050
日期:1958.2.1
4-Methylpiperid-2,3-dione-3-phenylhydrazone failed to undergo ring closure under Fisher–cyclization conditions but rearranged to a more stable form of the phenylhydrazone. Cis–trans isomerism is suggested for the two forms.