Reactions of 2-(Dialkylamino)arylacetonitriles with Acetylenes Under Basic Conditions. A Simple Synthesis of Substituted Mono and Diketones
作者:T. Zdrojewski、A. Jończyk
DOI:10.1055/s-1990-26839
日期:——
2-(Dialkylamino)arylacetonitriles 1 react with acetylenes 2a,b in dimethyl sulfoxide, powdered sodium hydroxide and triethylbenzylammonium chloride as a catalyst to give 3 and/or 4. The latter are formed via addition of anion 8 to immonium salt 9. The type of product formed depends on the basicity of amino moiety in 3. Furthermore, compound 1 adds to C-1 of acetylene 2c affording the vinyl derivatives 15. The products 3, 4, 11 and 15 are hydrolyzed to give ketones 5-7, 12 and 16, respectively.
2-(二烷基氨基)芳基乙腈1与乙炔2a,b在二甲基亚砜、粉末状氢氧化钠和三乙基苄基氯化铵催化下反应,生成3和/或4。后者通过阴离子8加成到亚胺盐9上形成。产物的类型取决于3中氨基部分的基本性质。此外,化合物1加成到乙炔2c的C-1位,得到乙烯基衍生物15。产物3、4、11和15分别水解得到酮5-7、12和16。