Robin Chi Group

Publications  

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Junming Mo, Xingkuan Chen and Yonggui Robin Chi*, Oxidative γ-Addition of Enals to Trifluoromethyl Ketones: Enantioselectivity Control via Lewis Acid/N-Heterocyclic Carbene Cooperative Catalysis", J. Am. Chem. Soc. 2012, in press. 

Kun Jiang, Bhoopendra Tiwari, and Yonggui Robin Chi*, "Access to Spirocyclic Oxindoles via N-Heterocyclic Carbene-Catalyzed Reactions of Enals and Oxindole-Derived α,β-Unsaturated Imines", Org. Lett. 2012, 14, 2382–2385. 

Lin Hao, Yu Du, Hui Lv, Xingkuan Chen, Huishen Jiang, Yaling Shao, and Yonggui Robin Chi*, "Enantioselective Activation of Stable Carboxylate Esters as Enolate Equivalents via N-Heterocyclic Carbene Catalysts", Org. Lett. 2012, 14, 2154-2157.

Qiang Tang, Xingkuan Chen, Bhoopendra Tiwari, and Yonggui Robin Chi*, " Addition of  Indoles to Oxyallyl Cations for Facile Access to α-Indole Carbonyl Compounds", Org. Lett. 2012, 14, 1922-1925.

Junmin Zhang, Chong Xing, Xingkuan Chen, Bhoopendra Tiwari, and Yonggui Robin Chi*, "Enantioselective Oxidative Cross-Dehydrogenative Coupling of Tertiary Amines and Aldehydes",  Angew. Chem. Int. Ed., 2012, 51, 3649-2652. 

Bhoopendra Tiwari, Junmin Zhang, and Yonggui Robin Chi*, Facile Access to Chiral Ketones via Metal-Free Oxidative C-C Bond Cleavage of Aldehydes by O₂", Angew. Chem. Int. Ed. 2012, 51, 1911-1914. 

 2011

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Xinqiang Fang, Xingkuan Chen, Hui Lv, and Yonggui Robin Chi*, "Enantioselective Stetter Reactions of Enals and Modified Chalcones Catalyzed by N-Heterocyclic Carbenes", Angew. Chem. Int. Ed., 2011, 50, 11782-11785. (PDF) 

Chong Xing, Hui Sun, Junmin Zhang, Guohui Li, and  Yonggui Robin Chi*,  "Brønsted Acid Catalyzed α-Alkylation of Aldehydes with Diaryl Methyl Alcohols", Chem-A. Eur. J. 2011, 17, 12272-12275. (PDF) 

Xinqiang Fang, Xingkuan Chen, and Yonggui Robin Chi*,"Enantioselective Diels–Alder Reactions of Enals and Alkylidene Diketones Catalyzed by N-Heterocyclic Carbenes", Org. Lett. 2011, 13, 4708-4711. (PDF)

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Guo, L.; Chi, Y.;  A. M. ; Guzei, I. A.; Parker, B. K. ; Gellman, S. H. "Stereospecific Synthesis of Conformationally Constrained γ-Amino Acids: New Foldamer Building Blocks That Support Helical Secondary Structure", J. Am. Chem. Soc, 2009, 131, 16018-16020.

Chi, Y.; Scroggins, T. S.; Boz, E.; Fréchet, J. M. J. “Control of Aldol Reaction Pathways of Enolizable Aldehdyes with an Enzyme-Like Polymer Catalyst in Aqueous Environment”, J. Am. Chem. Soc, 2008, 130, 17287-17289.

Chi, Y.; Scroggins, T. S.; Fréchet, J. M. J. “One-Pot Multi-Component Asymmetric Cascade Reactions Catalyzed by Soluble Star Polymers with Non-Interpenetrating Catalytic Cores”, J. Am. Chem. Soc., 2008, 130, 6322-6323.(Lawrence Berkeley National Laboratory 2008 Research Highlights)

Chi, Y.; Guo, L.; Kopf, N. A.; Gellman, S. H. “Enantioselective Organocatalytic Michael Addition of Aldehydes to Nitroethylene: Efficient Access to γ²-Amino Acids”, J. Am. Chem. Soc., 2008, 130, 5608-5609. (Highlighted: C&E News, 2008, 86, 50-51; Synfacts 2008, 6, 0648.)  

Chi, Y.; et al. & Gellman, S. H. “Practical Synthesis of Enantiomerically Pure β²-Amino Acids via Proline-Catalyzed Diastereoselective Aminomethylation of Aldehydes”, J. Am. Chem. Soc., 2007, 129, 6050-6055.

Chi, Y.; Gellman, S. H. “Enantioselective Organocatalytic Aminomethylation of Aldehydes: A Role for Ionic Interactions and Access to β²-Amino Acids”, J. Am. Chem. Soc., 2006, 128, 6804-6805. (Highlighted: Angew. Chem. Int. Ed. 2006, 45, 7876-7880)

Peelen, T. J.; Chi, Y.; Gellman, S. H. “Enantioselective Organocatalytic Michael Additions of Aldehydes to Enones with Imidazolidinones: Cocatalyst Effects and Evidence for an Enamine Intermediate”, J. Am. Chem. Soc., 2005, 127, 11598-11599. (“Most-Accessed Article” in J. Am. Chem. Soc.; July-September, 2005).

Chi, Y.; Gellman, S. H. “Diphenylprolinol Methyl Ether: A Highly Enantioselective Catalyst in Michael Addition of Aldehydes to Simple Enones”, Org. Lett., 2005, 7, 4253-4256. (Highlighted: Angew. Chem. Int. Ed. 2006, 45, 7876-7888)