Phenylation Reaction of α-Acylnitromethanes To Give 1,2-Diketone Monooximes: Involvement of Carbon Electrophile at the Position α to the Nitro Group
作者:Tomohiko Ohwada、Mikihiro Takamoto、Hiroaki Kurouchi、Yuko Otani
DOI:10.1055/s-0029-1217036
日期:——
phenylation reactions of α-acylnitromethanes catalyzed by trifluoromethanesulfonic acid have been studied. α-Aroylnitromethanes afforded benzil monooximes in good yield. In the case of aliphatic α-acylnitromethane, a similar phenylation reaction proceeded, but the yield of the phenylated 1,2-dione monooxime was low. These phenylation reactions represent examples of the generation of carbocation electrophiles
研究了取代基的一般性及其对三氟甲磺酸催化的α-酰基硝基甲烷苯化反应的影响。α-芳酰基硝基甲烷以良好的收率提供了苯甲酰单肟。在脂族α-酰基硝基甲烷的情况下,进行了类似的苯基化反应,但是苯基化的1,2-二酮单肟的收率低。这些苯基化反应代表在硝基的α位上碳正离子亲电试剂的产生的实例。 α-酮硝基甲烷-1,2-二酮一肟-亲电子芳香取代-物质-质子化