Enantioselective Oxidative Biaryl Coupling Reactions Catalyzed by 1,5-Diazadecalin Metal Complexes: Efficient Formation of Chiral Functionalized BINOL Derivatives
作者:Xiaolin Li、J. Brian Hewgley、Carol A. Mulrooney、Jaemoon Yang、Marisa C. Kozlowski
DOI:10.1021/jo0340206
日期:2003.7.1
ligands in the enantioselectiveoxidative biaryl coupling of substituted 2-naphtholderivatives. Under the optimal conditions employing 2.5-10 mol % of a 1,5-diaza-cis-decalin copper(II) catalyst with oxygen as the oxidant, enantioselectivecouplings (44-96% ee) could be achieved for a range of 3-substituted 2-naphthols including the ester, ketone, phosphonyl, and sulfonyl derivatives. The relationship
Asymmetric Total Synthesis of Nigerone andent-Nigerone: Enantioselective Oxidative Biaryl Coupling of Highly Hindered Naphthols
作者:Marisa C. Kozlowski、Elizabeth C. Dugan、Evan S. DiVirgilio、Katja Maksimenka、Gerhard Bringmann
DOI:10.1002/adsc.200600570
日期:2007.3.5
An enantioselectivesynthesis of the chiral bisnaphthopyrone natural product nigerone and its enantiomer, ent-nigerone, has been realized. The use of constrained 2-naphthol substrates was critical to producing highly functionalized chiral 1,1′-binaphthols via asymmetric oxidative biaryl coupling with 1,5-diaza-cis-decalin copper complexes. The final natural product was formed via a key eight-step isomerization
Chiral Dinuclear Benzyliminobinaphthoxy‐Palladium Catalyst for Asymmetric Mannich Reaction of Aldimines and Isatin‐Derived Ketimines with Alkylmalononitriles
A newly developed dinuclear bis(benzylimino)binaphthol (BIB )−Pd complex showed good catalytic activity for the Mannichreaction of aldimines and isatin‐derived ketimines with alkylmalononitriles to give the products in a highlyenantioselective manner.
challenging direct asymmetric catalytic aerobicoxidativecross‐coupling of 2‐naphthylamine and 2‐naphthol, using a novel CuI/SPDO system, has been successfully developed for the first time. Enantioenriched 3,3′‐disubstituted NOBINs were achieved and could be readily derived to divergent chiral ligands and catalysts. This reaction features high enantioselectivities (up to 96 % ee) and good yields (up to
首次成功开发了具有挑战性的2-萘胺和2-萘酚的直接不对称催化好氧氧化交叉偶联,使用新型Cu I / SPDO系统。获得了对映体富集的3,3'-双取代NOBIN,可以很容易地衍生出不同的手性配体和催化剂。该反应具有高对映选择性(高达96%ee)和良好的产率(高达80%)。在DFT计算表明,CF之间在F-H相互作用3的L17和2-萘酚的H-1,8,和两个联接伙伴之间的π-π堆叠可以在这个交叉偶联反应的enantiocontrol起到至关重要的作用。
Enantioselective fluorescent sensors for amino acid derivatives based on BINOL bearing benzoyl unit
作者:Kuo-xi Xu、Zhen Qiu、Jin-Jin Zhao、Jin Zhao、Chao-jie Wang
DOI:10.1016/j.tetasy.2009.06.016
日期:2009.7
The derivatives of BINOL, (S)-1 and (R)-1, and their analogues have been prepared and the structures of these compounds have been characterized by IR, MS, 1H, and 13C NMR spectroscopy and elemental analysis. The enantioselective recognition of these receptors has been studied by fluorescence titration and 1H NMR spectroscopy. The receptors exhibited different chiral recognition abilities toward some
BINOL的衍生物,(小号)-1和(- [R )- 1,和它们的类似物已被制备,并且这些化合物的结构已经通过IR,MS,1 H和13 C NMR光谱和元素分析。通过荧光滴定和1 H NMR光谱研究了这些受体的对映选择性识别。受体对手性物质的一些对映异构体表现出不同的手性识别能力,并在宿主和客体之间形成1:1的复合物。受体(S)-1或(R)-1 对氨基酸衍生物具有出色的对映选择性荧光识别能力。