Reaction of diene-conjugated 1,3-dipolar intermediates: the formation of cycloprop[c]isoquinolines from benzonitrile o-alkenylbenzyl ylides and their rearrangements to 2-benzazepines
作者:Keith R. Motion、Ian R. Robertson、John T. Sharp
DOI:10.1039/c39840001531
日期:——
The α,β:γ,δ-unsaturated nitrile ylides (9), when generated by the 1,3-dehydrochlorination of the benzimidoyl chlorides (8) at room temperature, react by a stereospecific 1,1-cycloaddition to give the cyloprop[c]isoquinolines (10); the latter undergo two types of thermal rearrangement giving the 1H-2-benzazepines (14) when R1 or R2= H, and the 5H-2-benzazepines (17) when R1= Ph and R2= Ph or Me.
当α,β:γ,δ-不饱和腈(9)在室温下通过苯甲亚酰氯(8)的1,3-脱氯化氢反应生成时,会通过立体有规的1,1-环加成反应生成环丙[ c ]异喹啉(10);后者经历两种类型的热重排,当R 1或R 2 = H时为1 H -2-苯并ze庚因(14),当R 1 = Ph和R 2 = Ph或在5 H -2-苯并ze庚因(17)时我。