The Photochemical Cyclodehydrogenation Route to Polycyclic Azaarenes
作者:Michael Hewlins、Rhys Salter
DOI:10.1055/s-2007-983745
日期:——
paper reports an investigation of photochemical cyclodehydrogenation for the preparation of polycyclic azaarenes. Various naphthoquinolines and naphthoisoquinolines were obtained from 2-, 3-, and 4-[2-(1- and 2-naphthyl)vinyl]pyridine. 4-[2-(3-Phenanthryl)vinyl]pyridine gave pyreno[1,10- HIJ]isoquinoline. An efficient preparation of (2-arylvinyl)pyridines is described.
An amine template strategy to construct successive C–C bonds: synthesis of benzo[<i>h</i>]quinolines by a deaminative ring contraction cascade
作者:Timothy Patrick McFadden、Chideraa Iheanyi Nwachukwu、Andrew George Roberts
DOI:10.1039/d1ob02245h
日期:——
and excise nitrogen from tertiary amines for the synthesis of polyheterocyclic aromatics. Biaryl-linked azepine intermediates can undergo a deaminative ring contraction cascade reaction, excising nitrogen with the formation of an aromatic core. This strategy and deaminative ring contraction reaction are useful for the synthesis of benzo[h]quinolines.
我们开发了一种聚合策略,从叔胺中构建、环化和切除氮,以合成多杂环芳烃。联芳基连接的氮杂中间体可以经历脱氨基环收缩级联反应,切除氮并形成芳香核。该策略和脱氨环收缩反应可用于苯并[ h ]喹啉的合成。
Compensation of London Dispersion in the Gas Phase and in Aprotic Solvents
importance of London dispersion for structure and stability of molecules with less than about 200 atoms has been established in recent years but the quantitative understanding is still largely based on computations because of a persistent lack of suitable experimental data. We herein report a comprehensive computational and experimental study of the compensation of London dispersion in proton-bound dimer