Preparative resolution of stable enantio-enriched POCOP-based planar chiral pincer complexes
作者:Noel Angel Espinosa-Jalapa、Manuel Alejandro Roque Ramires、Rubén Alfredo Toscano、Jean-Pierre Djukic、Ronan Le Lagadec
DOI:10.1016/j.jorganchem.2017.04.007
日期:2017.9
2-benzenediolato)phosphate(V) chiral anion (Δ-TRISPHAT), followed by the physical separation of the diastereomers. The absolute configuration of one enantiomer of each pair was established by a single-crystal X-ray diffraction and was found to be pR according to the extended Cahn-Ingold-Prelog rules. Upon release of the chiral auxiliary (metathesis of [Δ-TRISPHAT]- by PF6−), the pairs of enantiomers pR-2a/pS-2a and
的η 6 -coordination的[CPRU]的+片段基于在一个步骤中,得到外消旋一个naphthoresorcinate骨干钯和铂的非对称POCOP钳形衍生物的芳环外消旋-2a和外消旋-2b复合物(一个 =钯,b = PT)和化合物的平面手性性质是由非手性的PF易位证明6 -通过对映体纯的Δ-三(四氯-1,2-苯二醇基)磷酸(V)手性阴离子(Δ-TRISPHAT)产生抗衡离子,然后物理分离非对映体。通过单晶X射线衍射确定每对中一个对映异构体的绝对构型,并且根据扩展的Cahn-Ingold-Prelog规则,发现其为pR。在手性助剂([Δ-TRISPHAT]的复分解的释放-由PF 6 - ),则对映异构体的pR -2a / PS -2a和的pR -2b / PS -2b被充分表征。每对对映异构体均表现出相反的(+)/(-)旋光性,并具有相互的圆二色性,且棉花效应具有相似的绝对强度。通过pR