Single-Step Approach toward Nitrones via Pyridinium Ylides: The DMAP-Catalyzed Reaction of Benzyl Halides with Nitrosoarenes
作者:Yeonghun Jung、Jee Eun Hong、Jae-Hwan Kwak、Yohan Park
DOI:10.1021/acs.joc.1c00158
日期:2021.5.7
single-step approach is reported for the preparation of nitrones from benzyl halides and nitrosoarenes via pyridinium ylides, utilizing 4-dimethylaminopyridine (DMAP) catalyst and mild reaction conditions (Li2CO3, dimethylacetamide, and room temperature). The reaction provides both keto- and aldonitrones in high yields with a wide scope for benzyl halides and nitrosoarenes. In the same reaction system,
据报道,采用4-二甲基氨基吡啶(DMAP)催化剂和温和的反应条件(Li 2 CO 3,二甲基乙酰胺和室温)通过吡啶鎓叶立德从苄基卤化物和亚硝基芳烃制备硝酮的一步法。该反应高产率地提供了酮-和醛基酮,并广泛用于苄基卤化物和亚硝基芳烃。在相同的反应系统中,2-甲基-2-亚硝基丙烷,其不具有的芳基,也得到相应的Ñ -叔来自具有吸电子基团的伯苄基溴化物中的-丁基硝酮。作为反应的应用,通过顺序一锅合成,使用2-溴-2-苯基乙酸甲酯制备相应的异恶唑烷。