High diastereoselectivities (93:7) were observed in the biaryl coupling of 2′,6′-disubstituted aryl Grignard reagents of 1 with aryloxazolines 2. The diastereoselectivities observed in the coupling reaction varied primarily as a function of the chelating properties of the ortho substituents on the aryl Grignard reagent.
高非对映选择性(93:7)中的2'二芳基偶联,观察到,6'-二取代的芳基的
格氏试剂1与aryloxazolines 2。在偶联反应中观察到的非对映选择性主要根据芳基
格氏试剂上邻位取代基的螯合性能而变化。