Synthesis and Photo-oxygenation of Some Substituted 1-Benzyl-3,4-dihydroisoquinolines. Mechanism of Enamine Photo-oxygenation
作者:Ned H. Martin、Charles W. Jefford
DOI:10.1002/hlca.19820650314
日期:1982.5.5
Bischler-Napieralski cyclization is described. Competitive methylene blue sensitized photo-oxygenation experiments allowed the determination of relative rates of photo-oxygenation of 1-benzyl-3,4-dihydroisoquinolines, Substituents were shown to affect both the equilibrium concentration of the tautomeric enamine and the overall photo-oxygenation rate. After correcting for differences in enamine concentration, the relative
描述了通过Bischler-Napieralski环化合成一系列取代的1-苄基-3,4-二氢异喹啉。竞争性的亚甲基蓝敏化光氧合实验可确定1-苄基-3,4-二氢异喹啉的光氧合相对速率,已证明取代基会影响互变异构烯胺的平衡浓度和总光氧合速率。在校正了烯胺浓度的差异之后,相对速率数据提供了反应机理的诊断探针,该机理涉及限速步骤中电荷的转移。