ChemInform Abstract: Highly Effective and Enantioselective Michael Addition of 4-Hydroxycoumarin to α,β-Unsaturated Ketones Promoted by Simple Chiral Primary Amine Thiourea Bifunctional Catalysts.

ChemInform ◽  
2011 ◽  
Vol 42 (28) ◽  
pp. no-no
Author(s):  
Ren-Qiang Mei ◽  
Xiao-Ying Xu ◽  
Yan-Chun Li ◽  
Ji-Ya Fu ◽  
Qing-Chun Huang ◽  
...  
Keyword(s):  
Michael Addition ◽  
Primary Amine ◽  
Bifunctional Catalysts ◽  
Unsaturated Ketones ◽  
Highly Effective

Organocatalytic Michael Addition of Naphthoquinone with α,β-Unsaturated Ketones: Primary Amine Catalyzed Asymmetric Synthesis of Lapachol Analogues

2011 ◽  
Vol 2011 (11) ◽  
pp. 2142-2147 ◽  
Author(s):  
Guangcun Zhang ◽  
Yifeng Wang ◽  
Wei Zhang ◽  
Xiangsheng Xu ◽  
Aiguo Zhong ◽  
...  
Keyword(s):  
Asymmetric Synthesis ◽  
Michael Addition ◽  
Primary Amine ◽  
Unsaturated Ketones

ChemInform Abstract: Organocatalytic Michael Addition of Naphthoquinone with α,β-Unsaturated Ketones: Primary Amine Catalyzed Asymmetric Synthesis of Lapachol Analogues.

ChemInform ◽  
2011 ◽  
Vol 42 (30) ◽  
pp. no-no
Author(s):  
Guangcun Zhang ◽  
Yifeng Wang ◽  
Wei Zhang ◽  
Xiangsheng Xu ◽  
Aiguo Zhong ◽  
...  
Keyword(s):  
Asymmetric Synthesis ◽  
Michael Addition ◽  
Primary Amine ◽  
Unsaturated Ketones

Enantioselective cascade double Michael addition of 3-nitro-2H-chromenes and acyclic enones: efficient synthesis of functionalized tricyclic chroman derivatives

2015 ◽  
Vol 13 (37) ◽  
pp. 9600-9609 ◽  
Author(s):  
Jun-Hua Li ◽  
Da-Ming Du
Keyword(s):  
Michael Addition ◽  
Primary Amine ◽  
Efficient Synthesis ◽  
Unsaturated Ketones

An efficient protocol for the construction of enantiomerically enriched tetrahydro-6H-benzo[c]chromenes by the cascade double Michael addition of 3-nitro-2H-chromenes and α,β-unsaturated ketones catalyzed by a quinine-derived primary amine has been developed.

l-Prolinal Dithioacetal: A Highly Effective Organocatalyst for the Direct Nitro-Michael Addition to Selected Cyclic and Aromatic Ketones

Synthesis ◽  
2019 ◽  
Vol 51 (17) ◽  
pp. 3356-3368
Author(s):  
Piotr Pomarański ◽  
Zbigniew Czarnocki
Keyword(s):  
Michael Addition ◽  
Ring Size ◽  
Cyclic Ketones ◽  
Asymmetric Syntheses ◽  
Aromatic Ketones ◽  
Ring Systems ◽  
Effective Catalyst ◽  
Acetophenone Derivatives ◽  
Highly Effective ◽  
Related Compounds

The synthesis of novel l-prolinal dithioacetal and its application as an organocatalyst for the direct Michael addition of cyclic ketones and acetophenone derivatives to trans-β-nitrostyrene and related compounds is described. The prolinal dithioacetal acts as effective catalyst in the case of cyclic ketones of different ring size, in particular five- and six-membered examples, as well as larger and smaller ring systems. High enantioselectivity and diastereoselectivity is observed for different substrates and trans-β-nitrostyrenes. Also, the first asymmetric syntheses of selected 2-methyl-4-nitro-1,3-diphenylbutan-1-one derivatives by application of the obtained organocatalyst is presented.

Asymmetric Sulfa-Michael Addition to α-Substituted Vinyl Ketones Catalyzed by Chiral Primary Amine

2014 ◽  
Vol 16 (17) ◽  
pp. 4626-4629 ◽  
Author(s):  
Niankai Fu ◽  
Long Zhang ◽  
Sanzhong Luo ◽  
Jin-Pei Cheng
Keyword(s):  
Michael Addition ◽  
Primary Amine

Highly enantioselective aza-Michael addition reactions of 4-nitrophthalimide with α,β-unsaturated ketones

RSC Advances ◽  
2013 ◽  
Vol 3 (29) ◽  
pp. 11498 ◽  
Author(s):  
Shijun Ma ◽  
Lulu Wu ◽  
Ming Liu ◽  
Xiufang Xu ◽  
Yaodong Huang ◽  
...  
Keyword(s):  
Michael Addition ◽  
Addition Reactions ◽  
Unsaturated Ketones

ChemInform Abstract: Metal Ion-Complexes of α,β-Unsaturated Ketones Acting as Actual Reactive Species in Michael Addition of Ketene Silyl Acetal.

ChemInform ◽  
2010 ◽  
Vol 28 (47) ◽  
pp. no-no
Author(s):  
S. FUKUZUMI ◽  
T. OKAMOTO ◽  
K. YASUI ◽  
T. SUENOBU ◽  
S. ITOH ◽  
...  
Keyword(s):  
Michael Addition ◽  
Metal Ion ◽  
Reactive Species ◽  
Metal Ion Complexes ◽  
Unsaturated Ketones
Sign in / Sign up

Export Citation Format

Share Document