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研究了氨基分别为1′-四氢吡咯,1′-六氢吡啶和4′-吗啉的1-苯基-3-氨基-2-丁烯-1-酮的晶体结构.它们的构型、构象均为trans,S-cis.由于共轭体系的扩展,这些烯氨酮的氮原子都比相应的烯胺有程度更大的电子离域,其中又以扭式构象的四氢吡咯基的离域程度最高.四氢吡咯形成N-不饱和化合物的特殊活性与此有关.
The crystal structures of 1-phenyl-3-amino-2-buten-1-one having amino groups of 1’-tetrahydropyrrole, 1’-piperidine and 4’-morpholine, respectively, were studied. Their configurations , The conformations are trans, S-cis. Due to the extension of the conjugation system, these enaminones nitrogen atoms than the corresponding enamine a greater degree of electron delocalization, which in turn torsional conformation of tetrahydropyrrolyl Of the highest degree of delocalization.Hydrogen pyrrole formation of N-unsaturated compounds with special activity related.