Solventless DBU-promoted Mannich-type reactions of α-amido p-tolylsulfones with diethyl fluoromalonates and diethyl malonates
作者:Santosh T. Kadam、Sung Soo Kim
DOI:10.1016/j.tet.2010.05.075
日期:2010.7
Mannich-type reactions of α-amido p-tolylsulfones with diethyl fluoromalonates and diethyl malonates, respectively in presence of catalytic amount of DBU have been developed. A variety of α-amido p-tolylsulfones prepared from aromatic and aliphatic aldehydes reacts with diethyl fluoromalonates and diethyl malonates, respectively under mild reaction conditions to afford α-fluoro β-amino esters and β-amino
已经开发出α-酰胺基对甲苯基砜与氟丙二酸二乙酯和丙二酸二乙酯分别在催化量的DBU存在下的曼尼希型反应。由芳族和脂族醛制得的各种α-酰胺基对甲苯砜分别在温和的反应条件下与氟代丙二酸二乙酯和丙二酸二乙酯反应,以中等至良好的收率得到α-氟代β-氨基酯和β-氨基酯。