efficient primary-amine-directed, palladium-catalyzed C−H halogenation (X=I, Br, Cl) of phenylalanine derivatives is reported on a range of quaternary amino acid (AA) derivatives thanks to suitable conditions employing trifluoroacetic acid as additive. The extension of this original native functionality-directed ortho-selective halogenation was even demonstrated with the more challenging native phenylalanine
由于采用三氟乙酸作为添加剂的合适条件,在一系列季氨基酸 (AA) 衍生物上报道了苯丙氨酸衍生物的有效伯胺导向、钯催化的 C−H 卤化 (X=I, Br, Cl)。这种原始的天然官能团导向的邻位选择性卤化的扩展甚至用更具挑战性的天然苯丙氨酸作为叔 AA 得到了证明。
[EN] METHOD FOR THE SYNTHESIS OF CHIRAL ALPHA-ARYL PROPIONIC ACID DERIVATIVES<br/>[FR] PROCÉDÉ POUR LA SYNTHÈSE DE DÉRIVÉS CHIRAUX D'ACIDE ALPHA-ARYLPROPIONIQUE
申请人:DSM IP ASSETS BV
公开号:WO2010089343A1
公开(公告)日:2010-08-12
The present invention provides a method for the synthesis of optically pure α-aryl propionic acid derivatives comprising subjecting the corresponding racemic α-aryl propionic acid derivatives to high sheer or impact forces, such as grinding.
METHOD FOR THE SYNTHESIS OF CHIRAL ALPHA-ARYL PROPIONIC ACID DERIVATIVES
申请人:Kaptein Bernardus
公开号:US20120029226A1
公开(公告)日:2012-02-02
The present invention provides a method for the synthesis of optically pure α-aryl propionic acid derivatives comprising subjecting the corresponding racemic α-aryl propionic acid derivatives to high sheer or impact forces, such as grinding.
A photoelectrochemical strategy for synthesizing imines efficiently is introduced, including both symmetric and unsymmetric imines. Of note, the method is successfully applied to perform the cross-coupling of N-terminal phenylalanine residues, highlighting its potential in chemical biology applications. This strategy presents a convenient platform for imine synthesis with broad implications in drug
介绍了有效合成亚胺的光电化学策略,包括对称和不对称亚胺。值得注意的是,该方法成功应用于 N 末端苯丙氨酸残基的交叉偶联,凸显了其在化学生物学应用中的潜力。该策略为亚胺合成提供了一个方便的平台,对药物开发和有机合成具有广泛的影响。
Attrition-Enhanced Deracemization of an Amino Acid Derivative That Forms an Epitaxial Racemic Conglomerate
作者:Bernard Kaptein、Wim L. Noorduin、Hugo Meekes、Willem J. P. van Enckevort、Richard M. Kellogg、Elias Vlieg