反应条件
1.1: benzo[1,3,2]dioxaborole; (R)-(+)-o-tolyl-CBS-oxazaborolidine / dichloromethane / -50 - -40 °C / Inert atmosphere 2.1: triethylamine / dichloromethane / 0.5 h / 0 - 5 °C 3.1: 1-methyl-pyrrolidin-2-one / 0 - 20 °C / Inert atmosphere 4.1: sodium hydroxide; water / 2-methyl tetrahydrofuran; methanol / 2 h / 70 - 80 °C / Inert atmosphere 4.2: 20 °C 5.1: potassium dihydrogenphosphate / dichloromethane; water / 0.25 h / 20 °C 5.2: 0.25 h View Scheme
