51
|
|
52
|
Affiliation(s)
- Santanu Mukherjee
- Max-Planck-Institut für Kohlenforschung, D-45470 Mülheim an der Ruhr, Germany
| | | | | | | |
Collapse
|
53
|
|
54
|
|
55
|
anti-Selective direct asymmetric Mannich reactions catalyzed by chiral pyrrolidine-based amino sulfonamides. Tetrahedron 2008. [DOI: 10.1016/j.tet.2007.11.086] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
56
|
Pouliquen M, Blanchet J, Lasne MC, Rouden J. 3-Trifluoromethanesulfonamido-pyrrolidine: A General Organocatalyst for anti-Selective Mannich Reactions. Org Lett 2008; 10:1029-32. [DOI: 10.1021/ol8000975] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Mickael Pouliquen
- Laboratoire de Chimie Moléculaire et Thio-organique, ENSICAEN, Université de Caen Basse-Normandie, CNRS, 6 boulevard du Maréchal Juin, 14050 Caen, France
| | - Jérôme Blanchet
- Laboratoire de Chimie Moléculaire et Thio-organique, ENSICAEN, Université de Caen Basse-Normandie, CNRS, 6 boulevard du Maréchal Juin, 14050 Caen, France
| | - Marie-Claire Lasne
- Laboratoire de Chimie Moléculaire et Thio-organique, ENSICAEN, Université de Caen Basse-Normandie, CNRS, 6 boulevard du Maréchal Juin, 14050 Caen, France
| | - Jacques Rouden
- Laboratoire de Chimie Moléculaire et Thio-organique, ENSICAEN, Université de Caen Basse-Normandie, CNRS, 6 boulevard du Maréchal Juin, 14050 Caen, France
| |
Collapse
|
57
|
Direct catalytic asymmetric three-component Mannich reactions with dihydroxyacetone: enantioselective synthesis of amino sugar derivatives. Tetrahedron Lett 2008. [DOI: 10.1016/j.tetlet.2007.11.196] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
58
|
Kotsuki H, Ikishima H, Okuyama A. Organocatalytic Asymmetric Synthesis Using Proline and Related Molecules. Part 2. HETEROCYCLES 2008. [DOI: 10.3987/rev-07-621] [Citation(s) in RCA: 87] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
59
|
Verkade JMM, Hemert LJCV, Quaedflieg PJLM, Rutjes FPJT. Organocatalysed asymmetric Mannich reactions. Chem Soc Rev 2008; 37:29-41. [DOI: 10.1039/b713885g] [Citation(s) in RCA: 487] [Impact Index Per Article: 30.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
60
|
Zhang H, Mitsumori S, Utsumi N, Imai M, Garcia-Delgado N, Mifsud M, Albertshofer K, Cheong PHY, Houk KN, Tanaka F, Barbas CF. Catalysis of 3-pyrrolidinecarboxylic acid and related pyrrolidine derivatives in enantioselective anti-Mannich-type reactions: importance of the 3-acid group on pyrrolidine for stereocontrol. J Am Chem Soc 2007; 130:875-86. [PMID: 18163619 DOI: 10.1021/ja074907+] [Citation(s) in RCA: 126] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The development of enantioselective anti-selective Mannich-type reactions of aldehydes and ketones with imines catalyzed by 3-pyrrolidinecarboxylic acid and related pyrrolidine derivatives is reported in detail. Both (3R,5R)-5-methyl-3-pyrrolidinecarboxylic acid and (R)-3-pyrrolidinecarboxylic acid efficiently catalyzed the reactions of aldehydes with alpha-imino esters under mild conditions and afforded anti-Mannich products with high diastereo- and enantioselectivities (anti/syn up to 99:1, up to >99% ee). For the reactions of ketones with alpha-imino esters, (R)-3-pyrrolidinecarboxylic acid was an efficient catalyst (anti/syn up to >99:1, up to 99% ee). Evaluation of a series of pyrrolidine-based catalysts indicated that the acid group at the beta-position of the pyrrolidine ring of the catalyst played an important role in forwarding the carbon-carbon bond formation and in directing anti-selectivity and enantioselectivity.
Collapse
Affiliation(s)
- Haile Zhang
- The Skaggs Institute for Chemical Biology and the Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, USA
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
61
|
Ting A, Schaus SE. Organocatalytic Asymmetric Mannich Reactions: New Methodology, Catalyst Design, and Synthetic Applications. European J Org Chem 2007. [DOI: 10.1002/ejoc.200700409] [Citation(s) in RCA: 413] [Impact Index Per Article: 24.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Amal Ting
- Department of Chemistry, Boston University, Life Science and Engineering Building, 24 Cummington Street, Boston, MA 02215, U. S. A., Fax: +1‐617‐353‐6466
| | - Scott E. Schaus
- Department of Chemistry, Boston University, Life Science and Engineering Building, 24 Cummington Street, Boston, MA 02215, U. S. A., Fax: +1‐617‐353‐6466
| |
Collapse
|
62
|
Wei HL, Yan ZY, Niu YN, Li GQ, Liang YM. New Light on an Old Story: Facile and Efficient Synthesis of 1,3-Diaryl-5-spirohexahydro- pyrimidines via a Six-Molecule, Three-Component Mannich-Type Reaction. J Org Chem 2007; 72:8600-3. [DOI: 10.1021/jo7016235] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Hai-Long Wei
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, People's Republic of China, and State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Science, Lanzhou 730000, People's Republic of China
| | - Ze-Yi Yan
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, People's Republic of China, and State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Science, Lanzhou 730000, People's Republic of China
| | - Yan-Ning Niu
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, People's Republic of China, and State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Science, Lanzhou 730000, People's Republic of China
| | - Gao-Qiang Li
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, People's Republic of China, and State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Science, Lanzhou 730000, People's Republic of China
| | - Yong-Min Liang
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, People's Republic of China, and State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Science, Lanzhou 730000, People's Republic of China
| |
Collapse
|
63
|
Affiliation(s)
- Carmen Najera
- Departamento de Química OrgAnica, Facultad de Ciencias, and Instituto de Síntesis OrgAnica, Universidad de Alicante, Apdo. 99, 03080-Alicante, Spain.
| | | |
Collapse
|
64
|
Labonne A, Zani L, Hintermann L, Bolm C. Redox-Neutral Synthesis of β-Amino Aldehydes from Imines by an Alkynylation/Hydration Sequence. J Org Chem 2007; 72:5704-8. [PMID: 17595140 DOI: 10.1021/jo070745o] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
N-Protected beta-amino aldehydes have been prepared starting from imines through a sequence involving a Zn-mediated direct alkynylation followed by a Ru-catalyzed anti-Markovnikov alkyne hydration. The rate and the efficiency of the latter reaction are enhanced by the use of microwave irradiation. The possibility to carry out a one-pot Ru-catalyzed hydration/oxidation process from a terminal alkyne to a carboxylic acid was demonstrated, which provided direct access to a N-protected beta-amino acid from the corresponding terminal alkyne.
Collapse
Affiliation(s)
- Aurélie Labonne
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, D-52074 Aachen, Germany
| | | | | | | |
Collapse
|
65
|
Zhao GL, Ibrahem I, Sundén H, Córdova A. Amine-Catalyzed Asymmetric Epoxidation of α,β-Unsaturated Aldehydes. Adv Synth Catal 2007. [DOI: 10.1002/adsc.200600529] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
66
|
Dziedzic P, Córdova A. Acyclic β-amino acid catalyzed asymmetric anti-selective Mannich-type reactions. ACTA ACUST UNITED AC 2007. [DOI: 10.1016/j.tetasy.2007.04.024] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
67
|
Guo QX, Liu H, Guo C, Luo SW, Gu Y, Gong LZ. Chiral Brønsted Acid-Catalyzed Direct Asymmetric Mannich Reaction. J Am Chem Soc 2007; 129:3790-1. [PMID: 17358062 DOI: 10.1021/ja068236b] [Citation(s) in RCA: 217] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Qi-Xiang Guo
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry, University of Science and Technology of China, Hefei, 230026 China
| | | | | | | | | | | |
Collapse
|
68
|
Seebach D, Beck A, Badine D, Limbach M, Eschenmoser A, Treasurywala A, Hobi R, Prikoszovich W, Linder B. Are Oxazolidinones Really Unproductive, Parasitic Species in Proline Catalysis? – Thoughts and Experiments Pointing to an Alternative View. Helv Chim Acta 2007. [DOI: 10.1002/hlca.200790050] [Citation(s) in RCA: 204] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
69
|
Vesely J, Ibrahem I, Rios R, Zhao GL, Xu Y, Córdova A. Enantioselective organocatalytic conjugate addition of amines to α,β-unsaturated aldehydes: one-pot asymmetric synthesis of β-amino acids and 1,3-diamines. Tetrahedron Lett 2007. [DOI: 10.1016/j.tetlet.2007.01.093] [Citation(s) in RCA: 105] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
70
|
Ibrahem I, Zhao GL, Córdova A. Direct Catalytic Enantioselective α-Aminomethylation of Aldehydes. Chemistry 2007; 13:683-8. [PMID: 17039559 DOI: 10.1002/chem.200600725] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The direct catalytic asymmetric alpha-aminomethylation of aldehydes is presented. The chiral amine and amino acid catalyzed reactions between unmodified aldehydes and a formaldehyde-derived imine precursor were fast and proceeded with high chemo- and enantioselectivities. The corresponding dibenzyl-protected gamma-amino alcohols were isolated in high yields with up to 98% ee after in situ reduction. The reaction is a novel entry to valuable beta(2)-amino acid derivatives.
Collapse
Affiliation(s)
- Ismail Ibrahem
- Department of Organic Chemistry, The Arrhenius Laboratory, Stockholm University, Stockholm, Sweden
| | | | | |
Collapse
|
71
|
Tillman AL, Dixon DJ. An enantioselective Brønsted acid catalyzed enamine Mannich reaction. Org Biomol Chem 2007; 5:606-9. [PMID: 17285167 DOI: 10.1039/b616143j] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An enantioselective Brønsted acid catalyzed Mannich reaction between acetophenone derived enamines and N-Boc imines has been developed. Simple diol (S)-H(8)-BINOL has been identified as the optimal catalyst, to afford versatile beta-amino aryl ketones in good yield and enantiomeric excess.
Collapse
Affiliation(s)
- A Louise Tillman
- University Chemical Laboratory, University of Cambridge, Lensfield Road, Cambridge, UKCB2 1EW
| | | |
Collapse
|
72
|
Vesely J, Rios R, Ibrahem I, Córdova A. Highly enantioselective organocatalytic addition of unmodified aldehydes to N-Boc protected imines: one-pot asymmetric synthesis of β-amino acids. Tetrahedron Lett 2007. [DOI: 10.1016/j.tetlet.2006.11.076] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
73
|
Kano T, Hato Y, Maruoka K. Design of a C2-symmetric chiral pyrrolidine-based amino sulfonamide: application to anti-selective direct asymmetric Mannich reactions. Tetrahedron Lett 2006. [DOI: 10.1016/j.tetlet.2006.09.147] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
|
74
|
|
75
|
Zhang H, Mifsud M, Tanaka F, Barbas CF. 3-Pyrrolidinecarboxylic Acid for Direct Catalytic Asymmetric anti-Mannich-Type Reactions of Unmodified Ketones. J Am Chem Soc 2006; 128:9630-1. [PMID: 16866507 DOI: 10.1021/ja062950b] [Citation(s) in RCA: 146] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We report the development of direct catalytic, enantioselective, anti-selective Mannich-type reactions between unmodified ketones and alpha-imino esters under mild conditions. The reactions were performed using 5-10 mol % of (R)-3-pyrrolidinecarboxylic or (R)-beta-proline as catalyst in an environmentally benign solvent, 2-PrOH, at room temperature. The anti-Mannich products were obtained in good yields with high diastereo- and enantioselectivities (up to anti/syn >99:1, 99% ee). While (3R,5R)-5-methyl-3-pyrrolidinecarboxylic acid is an excellent catalyst for the anti-Mannich-type reactions of aldehydes, it did not efficiently catalyze the corresponding Mannich-type reactions of ketones; (R)-3-pyrrolidinecarboxylic acid did efficiently catalyze the Mannich-type reactions of ketones. (S)-Proline or (S)-2-pyrrolidinecarboxylic acid has been reported to catalyze the Mannich-type reactions of ketones to afford the syn-products. Thus, the position of the carboxylic acid group on the pyrrolidine ring directs the stereoselection of the catalyzed reaction, providing either syn- or anti-Mannich products.
Collapse
Affiliation(s)
- Haile Zhang
- The Skaggs Institute for Chemical Biology, 10550 North Torrey Pines Road, La Jolla, California 92037, USA
| | | | | | | |
Collapse
|
76
|
Chowdari NS, Ahmad M, Albertshofer K, Tanaka F, Barbas CF. Expedient Synthesis of Chiral 1,2- and 1,4-Diamines: Protecting Group Dependent Regioselectivity in Direct Organocatalytic Asymmetric Mannich Reactions. Org Lett 2006; 8:2839-42. [PMID: 16774270 DOI: 10.1021/ol060980d] [Citation(s) in RCA: 115] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
[reaction: see text] Organocatalytic asymmetric Mannich reaction of protected amino ketones with imines in the presence of an L-proline-derived tetrazole catalyst afforded diamines with excellent yields and enantioselectivities of up to 99%. The amino ketone protecting group controlled the regioselectivity of the reaction providing access to chiral 1,2-diamines from azido ketones and 1,4-diamines from phthalimido ketones.
Collapse
Affiliation(s)
- Naidu S Chowdari
- The Skaggs Institute for Chemical Biology and the Department of Chemistry, The Scripps Research Institute, La Jolla, California 92037, USA
| | | | | | | | | |
Collapse
|
77
|
de Figueiredo RM, Fröhlich R, Christmann M. N,N‘-Carbonyldiimidazole-Mediated Cyclization of Amino Alcohols to Substituted Azetidines and Other N-Heterocycles. J Org Chem 2006; 71:4147-54. [PMID: 16709054 DOI: 10.1021/jo060130b] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Amino alcohols are important synthons for N-heterocycles. We have developed an efficient method to activate hydroxyl groups, which avoids the use of toxic reagents and tolerates a wide variety of functional groups. Our strategy has been applied to the synthesis of functionalized p-methoxyphenyl-protected azetidines, pyrrolidines, and piperidines. The required amino alcohols were synthesized according to an optimized proline-catalyzed Mannich protocol. An azetidine analogue of ezetimibe was synthesized to demonstrate the potential for the synthesis of drug-like molecules.
Collapse
|
78
|
Ibrahem I, Zou W, Casas J, Sundén H, Córdova A. Direct organocatalytic enantioselective α-aminomethylation of ketones. Tetrahedron 2006. [DOI: 10.1016/j.tet.2005.08.113] [Citation(s) in RCA: 66] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
79
|
Ibrahem I, Córdova A. Direct catalytic asymmetric anti-selective Mannich-type reactions. Chem Commun (Camb) 2006:1760-2. [PMID: 16609796 DOI: 10.1039/b602221a] [Citation(s) in RCA: 111] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The simple chiral pyrrolidine catalyzed asymmetric anti-selective Mannich-type reaction is presented; the reaction gives the corresponding amino acid derivatives with 10:1- >19:1 dr and 97-99% ee.
Collapse
Affiliation(s)
- Ismail Ibrahem
- Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University, Sweden
| | | |
Collapse
|
80
|
Ibrahem I, Zou W, Xu Y, Córdova A. Amino Acid-Catalyzed Asymmetric Carbohydrate Formation: Organocatalytic One-StepDe Novo Synthesis of Keto and Amino Sugars. Adv Synth Catal 2006. [DOI: 10.1002/adsc.200505323] [Citation(s) in RCA: 83] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
81
|
Franzén J, Marigo M, Fielenbach D, Wabnitz TC, Kjaersgaard A, Jørgensen KA. A General Organocatalyst for Direct α-Functionalization of Aldehydes: Stereoselective C−C, C−N, C−F, C−Br, and C−S Bond-Forming Reactions. Scope and Mechanistic Insights. J Am Chem Soc 2005; 127:18296-304. [PMID: 16366584 DOI: 10.1021/ja056120u] [Citation(s) in RCA: 534] [Impact Index Per Article: 28.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The development of a general organocatalyst for the alpha-functionalization of aldehydes, via an enamine intermediate, is presented. Based on optically active alpha,alpha-diarylprolinol silyl ethers, the scope and applications of this catalyst for the stereogenic formation of C-C, C-N, C-F, C-Br, and C-S bonds are outlined. The reactions all proceed in good to high yields and with excellent enantioselectivities. Furthermore, we will present mechanistic insight into the reaction course applying nonlinear effect studies, kinetic resolution, and computational investigations leading to an understanding of the properties of the alpha,alpha-diarylprolinol silyl ether catalysts.
Collapse
Affiliation(s)
- Johan Franzén
- The Danish National Research Foundation: Center for Catalysis, Department of Chemistry, Aarhus University, DK-8000 Aarhus C, Denmark
| | | | | | | | | | | |
Collapse
|
82
|
Ibrahem I, Zou W, Engqvist M, Xu Y, Córdova A. Acyclic Chiral Amines and Amino Acids as Inexpensive and Readily Tunable Catalysts for the Direct Asymmetric Three-Component Mannich Reaction. Chemistry 2005; 11:7024-9. [PMID: 16189842 DOI: 10.1002/chem.200500746] [Citation(s) in RCA: 136] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
The direct three-component asymmetric Mannich reaction catalyzed by acyclic chiral amines or amino acids is presented. Simple acyclic chiral amines and amino acids--such as alanine-tetrazole (9), alanine, valine, and serine-catalyzed the three-component asymmetric Mannich reactions between unmodified ketones, p-anisidine, and aldehydes with high chemo- and stereoselectivity, furnishing the corresponding Mannich bases with up to >99 % ee. This study demonstrates that the whole range of amino acids in nature, as well as nonproteogenic amino acid derivatives, can be considered in the design and tuning of novel, inexpensive organocatalysts for the direct asymmetric Mannich reaction.
Collapse
Affiliation(s)
- Ismail Ibrahem
- Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University, 106 91 Stockholm, Sweden
| | | | | | | | | |
Collapse
|
83
|
Hayashi Y, Urushima T, Shin M, Shoji M. The stereoselective synthesis of α-substituted β-amino secondary alcohols based on the proline-mediated, asymmetric, three-component Mannich reaction and its application to the formal total synthesis of nikkomycins B and Bx. Tetrahedron 2005. [DOI: 10.1016/j.tet.2005.09.013] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
84
|
Hayashi Y, Urushima T, Shoji M, Uchimaru T, Shiina I. The Direct, Enantioselective, One-Pot, Three-Component, Cross-Mannich Reaction of Aldehydes: The Reason for the Higher Reactivity of Aldimineversus Aldehyde in Proline-Mediated Mannich and Aldol Reactions. Adv Synth Catal 2005. [DOI: 10.1002/adsc.200505190] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
85
|
Asao N, Yudha S S, Nogami T, Yamamoto Y. Direct Mannich and Nitro-Mannich Reactions with Non-Activated Imines: AgOTf-Catalyzed Addition of Pronucleophiles toortho-Alkynylaryl Aldimines Leading to 1,2-Dihydroisoquinolines. Angew Chem Int Ed Engl 2005; 44:5526-8. [PMID: 16044475 DOI: 10.1002/anie.200500795] [Citation(s) in RCA: 191] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Naoki Asao
- Department of Chemistry, Graduate School of Science, Tohoku University, Sendai 980-8578, Japan.
| | | | | | | |
Collapse
|
86
|
Asao N, Yudha S. S, Nogami T, Yamamoto Y. Direct Mannich and Nitro-Mannich Reactions with Non-Activated Imines: AgOTf-Catalyzed Addition of Pronucleophiles toortho-Alkynylaryl Aldimines Leading to 1,2-Dihydroisoquinolines. Angew Chem Int Ed Engl 2005. [DOI: 10.1002/ange.200500795] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
87
|
Terakado D, Takano M, Oriyama T. Highly Enantioselective (S)-Homoproline-catalyzed Michael Addition Reactions of Ketones to β-Nitrostyrenes. CHEM LETT 2005. [DOI: 10.1246/cl.2005.962] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
88
|
Amino acid catalyzed direct enantioselective formation of carbohydrates: one-step de novo synthesis of ketoses. Tetrahedron Lett 2005. [DOI: 10.1016/j.tetlet.2005.03.084] [Citation(s) in RCA: 124] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
89
|
|
90
|
Engqvist M, Casas J, Sundén H, Ibrahem I, Córdova A. Direct organocatalytic asymmetric α-oxidation of ketones with iodosobenzene and N-sulfonyloxaziridines. Tetrahedron Lett 2005. [DOI: 10.1016/j.tetlet.2005.01.167] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
91
|
Kobayashi S, Arai K, Shimizu H, Ihori Y, Ishitani H, Yamashita Y. A Novel Dinuclear Chiral Niobium Complex for Lewis Acid Catalyzed Enantioselective Reactions: Design of a Tridentate Ligand and Elucidation of the Catalyst Structure. Angew Chem Int Ed Engl 2005. [DOI: 10.1002/ange.200462204] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
92
|
Kobayashi S, Arai K, Shimizu H, Ihori Y, Ishitani H, Yamashita Y. A Novel Dinuclear Chiral Niobium Complex for Lewis Acid Catalyzed Enantioselective Reactions: Design of a Tridentate Ligand and Elucidation of the Catalyst Structure. Angew Chem Int Ed Engl 2005; 44:761-4. [PMID: 15612063 DOI: 10.1002/anie.200462204] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Shū Kobayashi
- Graduate School of Pharmaceutical Sciences, University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan.
| | | | | | | | | | | |
Collapse
|
93
|
Ibrahem I, Casas J, Córdova A. Direct Catalytic Enantioselective α-Aminomethylation of Ketones. Angew Chem Int Ed Engl 2004; 43:6528-31. [PMID: 15578760 DOI: 10.1002/anie.200460678] [Citation(s) in RCA: 122] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Ismail Ibrahem
- Department of Organic Chemistry, The Arrhenius Laboratory, Stockholm University, 10691 Stockholm, Sweden
| | | | | |
Collapse
|
94
|
Ibrahem I, Casas J, Córdova A. Direct Catalytic Enantioselective α-Aminomethylation of Ketones. Angew Chem Int Ed Engl 2004. [DOI: 10.1002/ange.200460678] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
95
|
Hayashi Y, Yamaguchi J, Sumiya T, Hibino K, Shoji M. Direct proline-catalyzed asymmetric alpha-aminoxylation of aldehydes and ketones. J Org Chem 2004; 69:5966-73. [PMID: 15373480 DOI: 10.1021/jo049338s] [Citation(s) in RCA: 140] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The direct proline-catalyzed asymmetric alpha-aminoxylation of aldehydes and ketones has been developed using nitrosobenzene as an oxygen source, affording alpha-anilinoxy-aldehydes and -ketones with excellent enantioselectivity. Reaction conditions have been optimized, and low temperature (-20 degrees C) was found to be a key for the successful alpha-aminoxylation of aldehydes, while slow addition of nitrosobenzene is essential for that of ketones. The scope of the reaction is presented.
Collapse
Affiliation(s)
- Yujiro Hayashi
- Department of Industrial Chemistry, Faculty of Engineering, Tokyo University of Science, Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan.
| | | | | | | | | |
Collapse
|
96
|
Casas J, Sundén H, Córdova A. Direct organocatalytic asymmetric α-hydroxymethylation of ketones and aldehydes. Tetrahedron Lett 2004. [DOI: 10.1016/j.tetlet.2004.06.062] [Citation(s) in RCA: 113] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
97
|
Notz W, Tanaka F, Barbas CF. Enamine-based organocatalysis with proline and diamines: the development of direct catalytic asymmetric Aldol, Mannich, Michael, and Diels-alder reactions. Acc Chem Res 2004; 37:580-91. [PMID: 15311957 DOI: 10.1021/ar0300468] [Citation(s) in RCA: 1241] [Impact Index Per Article: 62.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Enamines and imines have long been recognized as key intermediates in enzyme catalysis, particularly within a class of enzymes organic chemists would very much like to emulate, the aldolases. Here we summarize the contributions of this laboratory to converting enzymatic enamines, and in some cases imines, into a versatile catalytic asymmetric strategy powered by small organic molecules.
Collapse
Affiliation(s)
- Wolfgang Notz
- The Skaggs Institute for Chemical Biology and the Departments of Chemistry and Molecular Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, USA
| | | | | |
Collapse
|
98
|
|
99
|
Notz W, Tanaka F, Watanabe SI, Chowdari NS, Turner JM, Thayumanavan R, Barbas CF. The direct organocatalytic asymmetric mannich reaction: unmodified aldehydes as nucleophiles. J Org Chem 2004; 68:9624-34. [PMID: 14656087 DOI: 10.1021/jo0347359] [Citation(s) in RCA: 240] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The unprecedented application of unmodified aldehydes as nucleophilic donors in direct catalytic asymmetric Mannich-type reactions is disclosed in a full account. Our efforts in broadening the applicability of chiral pyrrolidine-based catalysts in direct asymmetric Mannich-type reactions led to the highly diastereo- and enantioselective and concise synthesis of functionalized alpha- and beta-amino acids, beta-lactams, and amino alcohols.
Collapse
Affiliation(s)
- Wolfgang Notz
- The Skaggs Institute for Chemical Biology and the Departments of Chemistry and Molecular Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, USA
| | | | | | | | | | | | | |
Collapse
|
100
|
Abstract
The direct catalytic asymmetric addition of unmodified carbonyl compounds to preformed or in situ-generated imines has emerged as a promising new route to optically enriched alpha- and beta-amino acid derivatives, beta-lactams, and 1,2- and gamma-amino alcohols. The direct catalytic asymmetric Mannich reactions are mediated by small organometallic and organic amine catalysts that can achieve levels of selectivity similar to those possible with natural enzymes. The different small-molecule catalysts described here are complementary in their applications. They also complement each other in syn or anti selectivity of the direct asymmetric Mannich reaction. In this Account, we highlight the recent developments in and contributions to this research.
Collapse
Affiliation(s)
- Armando Córdova
- Arrhenius Laboratory, Department of Organic Chemistry, Stockholm University, SE-10691 Stockholm, Sweden
| |
Collapse
|