Chemoenzymatic syntheses of novel ligands derived from trans-cyclohexane-1,2-diamine: application in the enantioselective addition of diethylzinc to aromatic aldehydes
作者:Javier González-Sabín、Vicente Gotor、Francisca Rebolledo
DOI:10.1016/j.tetasy.2006.01.003
日期:2006.2
Enantiopure (1R,2R)-cyclohexane-1,2-diamine derivatives, easily prepared from the corresponding (±)-trans-2-dialkylaminocyclohexanols through a chemoenzymatic route, have been employed as ligands in the enantioselective addition of diethylzinc to aromatic aldehydes. Of all the ligands tested, C2-symmetric bisaminoamides derived from pyridine-2,6-dicarboxylic acid proved to be the most efficient.
对映纯(1 R,2 R)-环己烷-1,2-二胺衍生物很容易从相应的(±)-反式-2-二烷基氨基环己醇通过化学酶促途径制得,已被用作配体,用于将二乙基锌向芳香族化合物进行对映选择性加成。醛。在所有测试的配体中,派生自吡啶-2,6-二羧酸的C 2对称双氨基酰胺被证明是最有效的。