The cyanation‐esterification reaction of α‐keto esters catalysed by N‐heterocyclic carbenes (NHCs) is developed. Under the catalysis of 10 mol% 1,3‐bis(2,6‐diisopropylphenyl)imidazol‐2‐ylidene, aromatic and aliphatic α‐keto esters reacted with ethyl cyanoformate or acetyl cyanide to produce the corresponding cyano esters with a tetrasubstituted carbon center in high yields.
开展了N-杂环卡宾(NHCs)催化的α-
酮酯的
氰化酯化反应。在10 mol%的1,3-双(2,6-二异丙基苯基)
咪唑-2-亚烷基的催化下,芳族和脂族α-
酮酯与
氰基甲酸乙酯或乙酰
氰反应生成相应的具有四取代碳中心的
氰基酯高产。