Double duty: In the presence of titanium isopropoxide, Grignard reagents were found to react with acyl cyanohydrins to give substituted 5‐hydroxy‐1,4‐diketones (see scheme). This new reaction involves a formal addition of a 1,2‐dianion equivalent to both the ester and nitrile moieties.
双重职责:在
异丙醇钛存在下,发现
格氏试剂与酰基
氰醇反应生成取代的5-羟基-1,4-二酮(参见方案)。这一新反应涉及正式加入与酯和腈部分均等价的1,2-二价阴离子。