作者:Jacques Streith、Arnaud Boiron、Thierry Sifferlen、Christiane Strehler、Théophile Tschamber
DOI:10.1016/s0040-4039(00)76704-9
日期:1994.6
A pronounced asymmetric induction (d.e. = 95 %) was observed during methylation of pyridinium salt 7 with MeMgI which led ultimately to (2R) 2-methyl-2,3-dihydro-4-pyridone 9. This result is best explained by assuming chelate-control during the asymmetric alkylation step.
在吡啶鎓盐7与MeMgI甲基化的过程中观察到明显的不对称诱导(de = 95%),这最终导致(2R)2-甲基-2,3-二氢-4-吡啶酮9。通过假设在不对称烷基化步骤中进行螯合物控制,可以最好地解释该结果。