Synthesis of New Bis(spiro-<i>β</i>-lactams) via Interaction of Methyl 1-Bromocycloalcanecarboxylates with Zinc and <i>N</i>,<i>N</i>′-Bis(arylmethylidene)benzidines
作者:N. F. Kirillov、E. A. Nikiforova、D. V. Baibarodskikh、T. A. Zakharova、L. S. Govorushkin
DOI:10.1155/2019/7496512
日期:2019.2.3
Interaction of the Reformatsky reagents, prepared from methyl 1-bromocyclopentane-1-carboxylate or methyl 1-bromocyclohexane-1-carboxylate, with N,N′-bis(arylmethylidene)benzidines has given rise to a set of intermediates as a result of nucleophilic addition to the C=N group of a substrate. Further intramolecular attack of the amide nitrogen atom onto the ester carbonyl group is responsible for the
由 1-溴环戊烷-1-羧酸甲酯或 1-溴环己烷-1-羧酸甲酯制备的 Reformatsky 试剂与 N,N'-双(芳基亚甲基)联苯胺的相互作用产生了一组中间体,这是亲核反应的结果。除了底物的 C=N 基团。酰胺氮原子对酯羰基的进一步分子内攻击负责闭环,这提供了两个系列的螺环化合物:2,2'-([1,1'-联苯]-4,4'-二基)双(3-芳基-2-氮杂螺[3.4]辛烷-1-one)或2,2'-([1,1'-联苯]-4,4'-二基)双(3-芳基-2-氮杂螺[ 3.5]nonan-1-ones)。