Photolytic, Thermal, Addition, and Cycloaddition Reactions of 2-Diazo-5,6- and -3,8-disubstituted Acenaphthenones
作者:Patricia A. Blair、Sou-Jen Chang、Harold Shechter
DOI:10.1021/jo040175h
日期:2004.10.1
11a−c in nitriles result in N2 evolution and dipolar cycloaddition to give acenaph[1,2-d]oxazoles (41 and 61a,b). Acetylenes undergo thermal and photolytic cycloaddition/1,5-sigmatropic rearrangement reactions with 11a−d with N2 retention to give pyrazolo[5,1-a]quinolin-7-ones (69f−j). 2-Diazoacenaphthenones 1a and 11a react thermally and photolytically with electronegatively-substituted olefins with
报道了2-重氮5,6-(二取代)ac庚烯酮(11a - d)和2-重氮-3,8-二甲氧基ac庚烯(12)的制备以及各种热和光解反应。醇与11a - c发生热解和光解反应,损失N 2,生成2-烷氧基环庚酮(24a,b和47a,b)和烯酮(25和48a,b)。苯胺和二苯胺在180°C下通过11a - c转化为[1,2- b ]吲哚(29a,b和53a,b)。在〜450°C(0.15 mmHg)下加热11a - c分别得到还原产物25和48a,b。在上述实验中未观察到沃尔夫夫重排为1,8-亚萘基乙烯(15a - d)和/或其衍生物。氧气将11a - c热转化为苯醌(19a - c)和/或1,8-萘酐。插入,添加,取代和/或异构化反应是在环己烷,苯和四氢呋喃中辐照2-重氮ac环酮发生的。在O 2存在下,苯中11d的光解产生插入氧化产物2-羟基-5,6-二硝基-2-苯基ac庚酮(60)。腈中11a -