548462-45-9Relevant academic research and scientific papers
Copper-catalyzed enantioselective 1,4-conjugate addition of dialkylzinc reagents to α,β- and α,β,γ,δ-unsaturated ketones
Rexiti, Rukeya,Lu, Jian,Sha, Feng,Wu, Xin-Yan
, p. 3596 - 3604 (2019/06/04)
An enantioselective Cu(II)-catalyzed conjugate addition of dialkylzinc reagents to α,β- or α,β,γ,δ-unsaturated ketones with chiral cyclohexane-based amidophosphine ligands was developed. With 2 mol% of Cu(OAc)2·H2O/L5, the conjugate
Enantioselective copper(II)-catalyzed conjugate addition of diethylzinc to β-substituted enones utilizing BINOL-based phosphoramidite ligands
Zhao, Wenxian,Wang, Tao,Zhao, Ruijuan,Xie, Huanping,Liu, Lantao
, p. 157 - 162 (2018/10/06)
A family of new chiral phosphoramidite ligands based on 3,3′-disubstituted (S)-BINOL have been successfully synthesized. The chiral phosphoramidite ligands were subsequently applied to the copper(II)-catalyzed enantioselective addition of diethylzinc to β
Functionalized BINOL-mono-PHOS for multinuclear Cu-catalysts in asymmetric conjugate addition of organozinc reagents
Endo, Kohei,Yakeishi, Sayuri,Hamada, Daisuke,Shibata, Takanori
supporting information, p. 547 - 549 (2013/06/05)
Functionalization of BINOL-mono-PHOS achieved the Cucatalyzed highly asymmetric conjugate addition of organozinc reagents to enones. The incorporation of a bulky hydroxy group at the 3'-position of BINOL-mono-PHOS dramatically improved the yield and enantioselectivity. The present novel BINOL-mono-PHOS ligands are effective in the Cu-catalyzed asymmetric conjugate addition of organozinc reagents in both acyclic enones and cyclohexenone.
BINAM- mono -PHOS as new entry for multinuclear copper catalysts in asymmetric conjugate addition of organozinc reagents
Endo, Kohei,Takayama, Ryotaro,Shibata, Takanori
, p. 1155 - 1159 (2013/06/27)
The readily functionalized ligands, BINAM-PHOS, participate in the copper-catalyzed asymmetric conjugate addition of organozinc reagents to enones. The incorporation of benzoyl derivatives on nitrogen atoms was crucial to promote the reaction. Notably, BI
Enantioselective conjugate addition of dialkylzincs to α,β- unsaturated enones catalyzed by Ni(acac)2 and (+)-(1S,2R)-7,7- dimethyl-1-morpholinoisonorborneol
Tseng, Chih-Hao,Hung, Yu-Ming,Uang, Biing-Jiun
experimental part, p. 130 - 135 (2012/05/20)
A mixture of chiral ligand 4 [(+)-MINBOL] and Ni(acac)2 (12.5 and 0.5 mol % respectively) is able to successfully catalyze the enantioselective conjugate 1,4-addition of dialkylzinc to α,β- unsaturated enones in propionitrile to give the corres
Multinuclear Cu-catalysts based on SPINOL-PHOS in asymmetric conjugate addition of organozinc reagents
Endo, Kohei,Hamada, Daisuke,Yakeishi, Sayuri,Ogawa, Mika,Shibata, Takanori
supporting information; experimental part, p. 2342 - 2345 (2012/06/29)
Multinuclear Cu/Zn complex-catalyzed efficient asymmetric conjugate addition of organozinc reagents to acyclic and cyclic enones has been developed in the presence of a wide variety of regioisomeric chiral diols bearing phosphorus moieties as ligands. The
METHOD OF ENANTIOSELECTIVE ADDITION TO ENONES
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Page/Page column 19-20, (2011/11/30)
The present invention relates to a method of enantioselective addition to enones, including: reacting R3(CH2)pCH═CR5C(═O)Y(CH2)qR4 with R6ZnR7 in the presen
Multinuclear catalyst for copper-catalyzed asymmetric conjugate addition of organozinc reagents
Endo, Kohei,Ogawa, Mika,Shibata, Takanori
supporting information; experimental part, p. 2410 - 2413 (2010/06/15)
(Figure Presented) A whole lot o' metal: An efficient copper-catalyzed asymmetric conjugate addition was achieved using a binol-derived ligand. The catalytic system has a turnover number of 2000, and the excellent cata-lytic performance could be attributed to the generation of a multinuclear complex such as 1. binol = 2, 2'-dihydroxy-l, 1'-binaphthyl.
