Diazomethyl ketones (2-diazoethanones) were reacted with the Vilsmeier reagent ((chloromethylidene)dimethylammonium chloride) to yield α-diazo-β-oxoaldehydes and chloromethyl ketones. 2′,4′-Dimethoxy-α-diazoacetophenone gave 2-chloro-1-(2,4-dimethoxyphenyl)-3-(dimethylamino)prop-2-en-1-one (5) in addition to the expected products. Phenyldiazomethanes gave the corresponding benzyl chlorides but not
使重氮甲基酮(2-重氮乙酮)与Vilsmeier试剂((
氯亚甲基)二甲基
氯化铵)反应,得到α-重氮-β-氧醛和
氯甲基酮。除了预期的产物之外,2',4'-二甲氧基-α-二重氮
苯乙酮还产生了2-
氯-1-(2,4-二
甲氧基苯基)-3-(二甲基
氨基)丙-2-烯-1-酮(5)。苯基
重氮甲烷即使在低至-60°C的温度下也能提供相应的苄基
氯,但不会生成(苯基)重氮
乙醛。苯基
乙醛和2-
叠氮基-1-
乙基吡啶-1-四
氟硼酸的重氮转移反应也未产生预期的(苯基)重氮
乙醛。