REFERENCES
- (a) Morris , M. L. ; Sturgess , M. A. Unusual chemo- and stereoselectivity in the addition of chiral aminoalcohols to achiral nitroalkenes . Tetrahedron Lett. 1993 , 34 , 43 – 46 ; (b) Ballini , R. ; Petrini , M. The first tridentate ligand for catalytic enantioselective aza-Claisen rearrangement of allylic imidates . Tetrahedron Lett. 1999 , 40 , 1449 – 1450 .
- Baer , H. H. ; Urbs , L. In The Chemistry of the Nitro and Nitroso Groups, Part 2 ; S. Patai (Ed.); Interscience : New York , 1970 ; p. 117 .
- Adams , H. ; Anderson , J. C. ; Peace , S. ; Pennell , A. M. K. The nitro-Mannich reaction and its application to the stereoselective synthesis of 1,2-diamines . J. Org. Chem. 1998 , 63 , 9932 – 9934 .
- Anderson , J. C. ; Peace , S. ; Pih , S. The Lewis–acid catalysed addition of 1-trimethylsilyl nitropropanate to imines . Synlett 2000 , 850 – 852 .
- Yamada , K. ; Harwood , S. J. ; Groger , H. ; Shibasaki , M. The first catalytic asymmetric nitro-Mannich-type reaction promoted by a new heterobimetallic complex . Angew. Chem. Int. Ed. 1999 , 38 , 3504 – 3506 .
- Nugent , B. M. ; Yoder , R. A. ; Johnston , J. N. Chiral proton catalysis: A catalytic enantioselective direct aza-Henry reaction . J. Am. Chem. Soc. 2004 , 126 , 3418 – 3419 .
- Knudsen , K. R. ; Risgaard , T. ; Nishiwaki , N. ; Gothelf , K. V. ; Jorgensen , K. A. The first catalytic asymmetric aza-Henry reaction of nitronates with imines: A novel approach to optically active β-nitro-α-amino acid and α,β-diamino acid derivatives . J. Am. Chem. Soc. 2001 , 123 , 5843 – 5844 .
- (a) Qian , C. ; Gao , F. ; Chen , R. Yb(O i Pr)3, a highly efficient catalyst for the nitro-Mannich reaction. Tetrahedron Lett. 2001, 42, 4673–4675; (b) Qian , C. ; Gao , F. ; Zhu , J. ; Tang , Y. ; Deng , M. Asymmetric aza-Henry reaction of N-tosyl imine. Chirality 2006, 18, 741–745.
- Juhl , K. ; Gathergood , N. ; Jorgensen , K. A. Catalytic enantioselective addition of nitro compounds to imines—A simple approach for the synthesis of optically active β-nitro-α-amino esters . Angew. Chem. Int. Ed. 2001 , 40 , 2995 – 2997 .
- Ferraris , D. ; Young , B. ; Dudding , T. ; Lectka , T. Catalytic, enantioselective alkylation of α-imino esters using late transition metal phosphine complexes as catalysts . J. Am. Chem. Soc. 1998 , 120 , 4548 – 4549 .
- Taggi , A. E. ; Hafez , A. M. ; Wack , H. ; Young , B. ; Durry , W. J. ; Letcka , T. Catalytic, asymmetric synthesis of β-lactams . J. Am. Chem. Soc. 2000 , 122 , 7831 – 7832 .
- Kim , B. M. ; Hyeon , I. ; Lee , A. ; Kim , W. ; Lee , J. Heterogeneous asymmetric nitro-Mannich reaction using a bis(oxazoline) ligand grafted on mesoporous silica . Tetrahedron: Asymmetry 2004 , 15 , 2595 – 2598 .
- Choudary , B. M. ; Kantam , M. L. ; Ranganadh , K. V. S. ; Mahendar , K. ; Sreedhar , B. Bifunctional nanocrystalline MgO for chiral epoxy ketones via Claisen−Schmidt condensation−asymmetric epoxidation reactions . J. Am. Chem. Soc. 2004 , 126 , 3396 – 3397 .
- Choudary , B. M. ; Ranganadh , K. V. S. ; Pal , U. ; Sreedhar , B. Nanocrystalline MgO for asymmetric Henry and Michael reactions . J. Am. Chem. Soc. 2005 , 127 , 13167 – 13171 .
- Choudary , B. M. ; Chakrapani , L. ; Ramani , T. ; Vijay Kumar , K. ; Kantam , M. L. Direct asymmetric aldol reaction catalyzed by nanocrystalline magnesium oxide . Tetrahedron 2006 , 62 , 9571 – 9576 .
- Kantam , M. L. ; Chakrapani , L. ; Ramani , T. Synthesis of α-diazo-β-hydroxy esters using nanocrystalline MgO . Tetrahedron Lett. 2007 , 48 , 6121 – 6123 .
- Choudary , B. M. ; Mahendar , K. ; Kantam , M. L. ; Ranganadh , K. V. S. ; Athar , T. The one-pot Wittig reaction: A facile synthesis of α,β-unsaturated esters and nitriles by using nanocrystalline magnesium oxide . Adv. Synth. Catal. 2006 , 348 , 1977 – 1985 .