diastereoselectivities (⪢98:2) have been obtained in the biaryl coupling of 2′,6′,-disubstituted aryl Grignard reagents 1 with aryl oxazolines 6, conveniently synthesised from the optically pure amino alcohols L-valinol and (S)-t-leucinol.
在2',6'-二取代芳基
格氏试剂1与芳基
恶唑啉6的联芳基偶联中获得了优异的非对映选择性(⪢98:2),可以方便地由光学纯的
氨基醇
L-缬氨醇和(S)-t合成-亮
氨酸