Chemoselective phosphine-catalyzed cyanoacylation of α-dicarbonyl compounds: a general method for the synthesis of cyanohydrin esters with one quaternary stereocenter
作者:Honghui Zhang、Rongfang Liu、Jialin Liu、Binbin Fan、Ruifeng Li、Yan Qiao、Rong Zhou
DOI:10.1039/c8nj04867c
日期:——
chemoselective phosphine-catalyzed cyanoacylation of α-dicarbonyl compounds is reported. Under the catalysis of P(NMe2)3, the cyanoacylation of α-dicarbonyl compounds such as isatins, α-keto esters, and α-diketones with acyl cyanides exclusively proceeds under very mild conditions, affording a wide range of cyanohydrin esters bearing one quaternary stereocenter in moderate to excellent yields. It represents
报道了化学选择性膦催化的α-二羰基化合物的氰基酰化。在P(NMe 2)3的催化下,α-二羰基化合物(如靛红,α-酮酯和α-二酮)与酰基氰的氰基化仅在非常温和的条件下进行,从而提供了多种带有1种氰基醇酯的氰醇酯。四元立体中心,产量中等至极佳。它代表了第一个膦催化的α-二羰基化合物的氰基酰化反应,也提供了制备完全取代的氰醇酯的一般方法。