Suzuki-Miyaura Coupling Reaction of Boronic Acids and Ethyl Glyoxylate: Synthetic Access to Mandelate Derivatives
作者:Irene Notar Francesco、Alain Wagner、Françoise Colobert
DOI:10.1002/ejoc.200800881
日期:2008.12
The palladium-catalyzed coupling reaction of arylboronicacids with ethyl glyoxylate provides a straightforward method for the synthesis of mandelic esters. Pd2(dba)3·CHCl3 in combination with 2-di-tert-butylphosphanylbiphenyl as the catalytic system and Cs2CO3 as the base were used. The reaction tolerates a wide range of functionalized boronicacids. Mandelic esters were isolated in good-to-excellent
芳基硼酸与乙醛酸乙酯的钯催化偶联反应为合成扁桃酸酯提供了一种直接的方法。以Pd2(dba)3·CHCl3和2-二叔丁基膦酰基联苯为催化体系,Cs2CO3为碱。该反应耐受范围广泛的官能化硼酸。扁桃酸酯与各种中性、略富电子和略缺电子的取代基以良好到优异的产率分离。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2008)