The present disclosure discusses (i) a compound having a chemical formula according to Formula (I), or its enantiomer; and (ii) a compound that is reactive with a hydride to produce a compound having a chemical formula according to Formula (I), or its enantiomer. Formula (I) is: Formula (I) where R1 and R2 are H, optionally substituted C1-C3 alkyl, or linked together to form an optionally substituted C3 or C4 alkyl group; R3 and R3′ are H; R4 and R4′ are the same, and are optionally substituted C1-C6 alkyl; and R5 and R5′ are the same, and are optionally substituted aryl or heteroaryl. In some examples, R4 and R5 are linked, and R4′ and R5′ are linked, where both linking groups are the same. The present disclosure also discusses methods of asymmetric reduction of an imine, and methods of forming the catalysts and pre-catalysts.
本公开讨论(i)具有
化学式为式(I)的化合物或其对映体;以及(ii)与
氢化物反应生成具有
化学式为式(I)的化合物或其对映体的化合物。式(I)为式 (I) 其中 R1 和 R2 是 H、任选取代的 C1-C3 烷基或连接在一起形成任选取代的 C3 或 C4 烷基;R3 和 R3′ 是 H;R4 和 R4′ 相同,是任选取代的 C1-C6 烷基;R5 和 R5′ 相同,是任选取代的芳基或杂芳基。在某些实例中,R4 和 R5 连接,R4′ 和 R5′ 连接,其中两个连接基团相同。本公开还讨论了
亚胺的不对称还原方法,以及形成催化剂和前催化剂的方法。