Reaction of (±)-chromium (0) -complexes 4e-g with 5–7 gave the isomers in a highly selective manner. This aldol reaction was successfully applied to the asymmetric one. The absolute configuration was determined by X-ray analysis of (—)--8e.
(±)-
铬(0)-络合物4e-g与5-7的反应以高度选择性的方式得到了异构体。该醛醇缩合反应已成功地应用于不对称反应。通过(-)- 8e的X射线分析确定绝对构型。