compound in a chiral conformation is used as the unique source of chirality in an absolute asymmetric synthesis of tertiary amino acids. The dynamic axial chirality of tertiary aromatic amides is frozen in a crystal (see picture) and is responsible for the stereoselectivity of the deprotonation/alkylation (see scheme). α‐Amino acid derivatives are synthesized in up to 96 % ee.
冷冻:手性构象的非手性化合物的自发结晶在叔
氨基酸的绝对不对称合成中用作手性的唯一来源。叔芳香酰胺的动态轴向手性被冻结在晶体中(参见图片),并负责去质子化/烷基化的立体选择性(参见方案)。
α-氨基酸衍
生物的合成度高达96%ee。