1165944-63-7Relevant academic research and scientific papers
Asymmetric conjugate addition of nitromethane to enones catalyzed by chiral N,N'-dioxide-scandium(III) complexes
Wang, Liwei,Zhang, Qi,Zhou, Xin,Liu, Xiaohua,Lin, Lili,Qin, Bo,Feng, Xiaoming
, p. 7696 - 7699 (2010)
(Chemical Equation Representation)Chalk it up as a "Sc"andal: The asymmetric conjugate addition of chalcone and "cinnamone" derivatives to nitromethane has been realized by using a simple and efficient scandium(III)N,N'-dioxide complex as the catalyst (se
A general, highly enantioselective Michael addition of nitroalkanes to α,β-unsaturated enones catalyzed by 9-amino(9-deoxy)-epi-quinine: a remarkable additive effect
Liu, Siyang,Wang, Qingqing,Ye, Ling,Shi, Zhichuan,Zhao, Zhigang,Yang, Xuejun,Ding, Keyi,Li, Xuefeng
supporting information, p. 5115 - 5120 (2016/07/25)
A particularly general protocol for the organocatalytic asymmetric Michael addition of nitroalkanes to α,β-unsaturated enones is reported. The Michael reaction proceeded smoothly and provided the desired adducts in moderate to excellent yields (55–99%) an
Enantioselective addition of aryl ketones and acetone to nitroalkenes organocatalyzed by carbamate-monoprotected cyclohexa-1,2-diamines
Flores-Ferrndiz, Jess,Stiven, Alexander,Sotorros, Lia,Gmez-Bengoa, Enrique,Chinchilla, Rafael
, p. 970 - 979 (2015/09/01)
Enantiomerically pure carbamate-monoprotected trans-cyclohexane-1,2-diamines are used as chiral organocatalysts for the addition of aryl ketones and acetone to nitroalkenes to give enantioenriched β-substituted γ-nitroketones. The reaction was performed i
New simple primary amine-thiourea organocatalysts and their application in asymmetric conjugate addition
Yu, Lu,Li, Pengfei
supporting information, p. 3697 - 3700 (2014/06/23)
A kind of simple primary amine-thiourea organocatalysts was developed. And their application in asymmetric conjugate addition of ketone to nitroalkene was investigated. In the presence of the new primary amine-thiourea, the conjugate addition of ketone to
Highly enantioselective conjugate addition of nitroalkanes to enones catalyzed by cinchona alkaloid derived primary amine
Liu, Wenjing,Mei, Desheng,Wang, Wei,Duan, Wenhu
supporting information, p. 3791 - 3793 (2013/07/05)
A cinchona alkaloid derived primary amine catalyzed conjugate addition of nitroalkanes to enones is described. The process affords the Michael adducts in good yield and with up to 99% ee for both acyclic and cyclic enones.
Primary amine-thioureas with improved catalytic properties for "difficult" Michael reactions: Efficient organocatalytic syntheses of (S)-baclofen, (R)-baclofen and (S)-phenibut
Tsakos, Michail,Kokotos, Christoforos G.,Kokotos, George
supporting information; experimental part, p. 740 - 746 (2012/05/04)
Among the class of primary amine-thioureas based on tert-butyl esters of α-amino acids, the most efficient organocatalyst for "difficult" Michael reactions was identified. The derivative based on (S)-di-tert-butyl aspartate and (1R,2R)-diphenylethylenedia
Modular bifunctional chiral thioureas as versatile organocatalysts for highly enantioselective aza-Henry reaction and michael addition
Li, Hua,Zhang, Xu,Shi, Xin,Ji, Nan,He, Wei,Zhang, Shengyong,Zhang, Bangle
, p. 2264 - 2274 (2012/11/06)
A series of new modular bifunctional chiral thiourea organocatalysts were synthesized from natural Cinchona alkaloids and amino acids, and their performance in the aza-Henry reaction of nitroalkanes to imines, the Michael addition of acetylacetone to nitroolefins and the Michael addition of acetone to nitroolefins was investigated. Under the mild conditions, the important building blocks β-nitro amines and γ-nitro carbonyl compounds could be obtained in good yields (up to 95%) with excellent enantioselectivities (up to 99% ee) and diastereoselectivity (up to 17:1). Copyright
Organocatalyzed Michael addition reaction by novel (2 R,3a S,7a S)-octa-hydroindole-2-carboxylic acid, a new fused proline
Roca-López, David,Merino, Pedro,Sayago, Francisco J.,Cativiela, Carlos,Herrera, Raquel P.
experimental part, p. 249 - 253 (2011/03/21)
We present here the results obtained in our study on organocatalytic enantioselective Michael addition reaction of acetone to different nitroolefines using (2R,3aS,7aS)-octahydroindole-2-carboxylic acid [(R,S,S)-Oic] as a new and suitable catalyst for thi
Enantioselective organocatalytic conjugate addition of α-nitroacetate to α,β-unsaturated ketones in water
Moon, Hyoung Wook,Kim, Dae Young
experimental part, p. 2906 - 2908 (2010/06/16)
The catalytic enantioselective conjugate addition reaction of α-nitroacetate to α,β-unsaturated ketones promoted by chiral bifunctional organocatalysts is described. The treatment of α-nitroacetate to α,β-unsaturated ketones under aqueous-phase reaction c
Noyort's Ts-DPEN ligand: Simple yet effective catalyst for the highly enantioselective michael addition of acetone to nitroalkenes
Peng, Lin,Xu, Xiao-Ying,Wang, Liang-Liang,Huang, Jun,Bai, Jian-Fei,Huang, Qing-Chun,Wang, Li-Xin
experimental part, p. 1849 - 1853 (2010/07/18)
Highly enantioselective Michael addition of acetone to a variety of nitroalkenes promoted by simple chiral primary amine bifunctional catalysts (e.g., Noyori's Ts-DPEN ligand) together with terephthalic acid in excellent yields (84-99%) and enantioselectivities (93-98 % ee) is reported.
