151
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Wang X, Guo P, Wang X, Wang Z, Ding K. Practical Asymmetric Catalytic Synthesis of Spiroketals and Chiral Diphosphine Ligands. Adv Synth Catal 2013. [DOI: 10.1002/adsc.201300380] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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152
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Yang C, Xue XS, Jin JL, Li X, Cheng JP. Theoretical Study on the Acidities of Chiral Phosphoric Acids in Dimethyl Sulfoxide: Hints for Organocatalysis. J Org Chem 2013; 78:7076-85. [DOI: 10.1021/jo400915f] [Citation(s) in RCA: 83] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Chen Yang
- State
Key Laboratory of Elemento-organic Chemistry and ‡Computational Center of Molecular
Science, Department of Chemistry, Nankai University, Tianjin 300071
| | - Xiao-Song Xue
- State
Key Laboratory of Elemento-organic Chemistry and ‡Computational Center of Molecular
Science, Department of Chemistry, Nankai University, Tianjin 300071
| | - Jia-Lu Jin
- State
Key Laboratory of Elemento-organic Chemistry and ‡Computational Center of Molecular
Science, Department of Chemistry, Nankai University, Tianjin 300071
| | - Xin Li
- State
Key Laboratory of Elemento-organic Chemistry and ‡Computational Center of Molecular
Science, Department of Chemistry, Nankai University, Tianjin 300071
| | - Jin-Pei Cheng
- State
Key Laboratory of Elemento-organic Chemistry and ‡Computational Center of Molecular
Science, Department of Chemistry, Nankai University, Tianjin 300071
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153
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Ye F, Zheng ZJ, Deng WH, Zheng LS, Deng Y, Xia CG, Xu LW. Modulation of Multifunctional N,O,P Ligands for Enantioselective Copper-Catalyzed Conjugate Addition of Diethylzinc and Trapping of the Zinc Enolate. Chem Asian J 2013; 8:2242-53. [DOI: 10.1002/asia.201300544] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2013] [Indexed: 11/08/2022]
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154
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Zhang Y, Li N, Qu B, Ma S, Lee H, Gonnella NC, Gao J, Li W, Tan Z, Reeves JT, Wang J, Lorenz JC, Li G, Reeves DC, Premasiri A, Grinberg N, Haddad N, Lu BZ, Song JJ, Senanayake CH. Asymmetric Methallylation of Ketones Catalyzed by a Highly Active Organocatalyst 3,3′-F2-BINOL. Org Lett 2013; 15:1710-3. [DOI: 10.1021/ol400498a] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Yongda Zhang
- Department of Chemical Development, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road/P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
| | - Ning Li
- Department of Chemical Development, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road/P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
| | - Bo Qu
- Department of Chemical Development, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road/P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
| | - Shengli Ma
- Department of Chemical Development, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road/P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
| | - Heewon Lee
- Department of Chemical Development, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road/P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
| | - Nina C. Gonnella
- Department of Chemical Development, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road/P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
| | - Joe Gao
- Department of Chemical Development, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road/P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
| | - Wenjie Li
- Department of Chemical Development, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road/P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
| | - Zhulin Tan
- Department of Chemical Development, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road/P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
| | - Jonathan T. Reeves
- Department of Chemical Development, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road/P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
| | - Jun Wang
- Department of Chemical Development, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road/P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
| | - Jon C. Lorenz
- Department of Chemical Development, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road/P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
| | - Guisheng Li
- Department of Chemical Development, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road/P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
| | - Diana C. Reeves
- Department of Chemical Development, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road/P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
| | - Ajith Premasiri
- Department of Chemical Development, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road/P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
| | - Nelu Grinberg
- Department of Chemical Development, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road/P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
| | - Nizar Haddad
- Department of Chemical Development, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road/P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
| | - Bruce Z. Lu
- Department of Chemical Development, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road/P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
| | - Jinhua J. Song
- Department of Chemical Development, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road/P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
| | - Chris H. Senanayake
- Department of Chemical Development, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road/P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
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155
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Haberhauer G, Tepper C, Wölper C, Bläser D. Tropos, Nevertheless Conformationally Stable Biphenyl Derivatives. European J Org Chem 2013. [DOI: 10.1002/ejoc.201300087] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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156
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Masters KS, Bräse S. The Acetal Concept: Regioselective Access toortho,ortho-Diphenols via Dibenzo-1,3-dioxepines. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/anie.201207485] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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157
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Masters KS, Bräse S. Das Acetal-Konzept: regioselektiver Zugang zuortho,ortho-Diphenolen über Dibenzo-1,3-dioxepine. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201207485] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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158
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159
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Teng HL, Huang H, Wang CJ. Catalytic asymmetric construction of spiro(γ-butyrolactam-γ-butyrolactone) moieties through sequential reactions of cyclic imino esters with Morita-Baylis-Hillman bromides. Chemistry 2012; 18:12614-8. [PMID: 22927370 DOI: 10.1002/chem.201201475] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2012] [Revised: 06/16/2012] [Indexed: 12/21/2022]
Abstract
Spiro(γ-butyrolactam-γ-butyrolactone): a route to enantioenriched spiro(γ-butyrolactam-γ-butyrolactone) compounds, a valuable motif for drug discovery, was developed by use of a highly efficient copper(I)/TF-BiphamPhos-catalyzed tandem Michael addition-elimination of homoserine lactone derived cyclic imino esters with Morita-Baylis-Hillman (MBH) bromides, followed by treatment with para-toluenesulfonic acid.
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Affiliation(s)
- Huai-Long Teng
- College of Chemistry and Molecular Sciences, Wuhan University, PR China
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160
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Parra A, Reboredo S, Martín Castro AM, Alemán J. Metallic organophosphates as catalysts in asymmetric synthesis: a return journey. Org Biomol Chem 2012; 10:5001-20. [DOI: 10.1039/c2ob25479d] [Citation(s) in RCA: 75] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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161
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Chauhan P, Chimni SS. Aromatic hydroxyl group—a hydrogen bonding activator in bifunctional asymmetric organocatalysis. RSC Adv 2012. [DOI: 10.1039/c1ra00872b] [Citation(s) in RCA: 68] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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162
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Surya Prakash GK, Wang F, Rahm M, Shen J, Ni C, Haiges R, Olah GA. On the nature of C-H···F-C interactions in hindered CF3-C(sp3) bond rotations. Angew Chem Int Ed Engl 2011; 50:11761-4. [PMID: 21984045 PMCID: PMC3439535 DOI: 10.1002/anie.201105288] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2011] [Indexed: 11/09/2022]
Affiliation(s)
- G. K. Surya Prakash
- Loker Hydrocarbon Research Institute and Department of Chemistry University of Southern California University Park, Los Angeles, CA-90089-1661 (USA)
| | - Fang Wang
- Loker Hydrocarbon Research Institute and Department of Chemistry University of Southern California University Park, Los Angeles, CA-90089-1661 (USA)
| | - Martin Rahm
- Loker Hydrocarbon Research Institute and Department of Chemistry University of Southern California University Park, Los Angeles, CA-90089-1661 (USA)
| | - Jingguo Shen
- Loker Hydrocarbon Research Institute and Department of Chemistry University of Southern California University Park, Los Angeles, CA-90089-1661 (USA)
| | - Chuanfa Ni
- Loker Hydrocarbon Research Institute and Department of Chemistry University of Southern California University Park, Los Angeles, CA-90089-1661 (USA)
| | - Ralph Haiges
- Loker Hydrocarbon Research Institute and Department of Chemistry University of Southern California University Park, Los Angeles, CA-90089-1661 (USA)
| | - George A. Olah
- Loker Hydrocarbon Research Institute and Department of Chemistry University of Southern California University Park, Los Angeles, CA-90089-1661 (USA)
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163
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Prakash GKS, Wang F, Rahm M, Shen J, Ni C, Haiges R, Olah GA. On the Nature of CH⋅⋅⋅FC Interactions in Hindered CF3C(sp3) Bond Rotations. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201105288] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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164
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Ghosn MW, Wolf C. Enantioselective recognition of amines with an atropisomeric 1,8-bisphenolnaphthalene. Tetrahedron 2011. [DOI: 10.1016/j.tet.2011.07.001] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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165
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Blacquiere JM, Higman CS, McDonald R, Fogg DE. A Reactive Ru–Binaphtholate Building Block with Self-Tuning Hapticity. J Am Chem Soc 2011; 133:14054-62. [DOI: 10.1021/ja204767a] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Johanna M. Blacquiere
- Center for Catalysis Research & Innovation and Department of Chemistry, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
| | - Carolyn S. Higman
- Center for Catalysis Research & Innovation and Department of Chemistry, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
| | - Robert McDonald
- Center for Catalysis Research & Innovation and Department of Chemistry, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
| | - Deryn E. Fogg
- Center for Catalysis Research & Innovation and Department of Chemistry, University of Ottawa, Ottawa, Ontario K1N 6N5, Canada
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166
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Drabowicz J, Krasowska D, Marciniak B, Rozycka-Sokolowska E. Racemic and optically active 1,1′-binaphthyl-2,2′-diyl sulfite: Synthesis, crystal structure, and ring-opening reactions with selected nucleophiles. HETEROATOM CHEMISTRY 2011. [DOI: 10.1002/hc.20722] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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167
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Kelgtermans H, Dobrzańska L, Van Meervelt L, Dehaen W. A convenient route towards novel H8-1,1′-bis-(dibenzofuran-2-ol) derivatives and evaluation of their use as chiral auxiliaries. Tetrahedron 2011. [DOI: 10.1016/j.tet.2011.03.077] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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168
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Gao G, Gu FL, Jiang JX, Jiang K, Sheng CQ, Lai GQ, Xu LW. Neighboring Lithium-Assisted [1,2]-Wittig Rearrangement: Practical Access to Diarylmethanol-Based 1,4-Diols and Optically Active BINOL Derivatives with Axial and sp3-Central Chirality. Chemistry 2011; 17:2698-703. [DOI: 10.1002/chem.201003111] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2010] [Indexed: 11/08/2022]
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169
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Iuliano A. Asymmetric activation of tropos species in the achievement of chiral inducers for enantioselective catalysis. ACTA ACUST UNITED AC 2010. [DOI: 10.1016/j.tetasy.2010.07.022] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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170
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Insight into the structure of the precatalyst and active species for samarium iodo binaphtholate catalysed aminolysis of epoxides. ACTA ACUST UNITED AC 2010. [DOI: 10.1016/j.tetasy.2010.04.035] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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171
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Hatano M, Sugiura Y, Ishihara K. Synthesis of chiral 3,3′-disubstituted 1,1′-binaphthyl-2,2′-disulfonic acids. ACTA ACUST UNITED AC 2010. [DOI: 10.1016/j.tetasy.2010.03.014] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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172
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Xiao J, Wong ZZ, Lu YP, Loh TP. Hexahydropyrrolo[2,3-b]indoles: A New Class of Structurally Rigid Tricyclic Skeleton for Oxazaborolidine-Catalyzed Asymmetric Borane Reduction. Adv Synth Catal 2010. [DOI: 10.1002/adsc.200900908] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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173
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Muramatsu Y, Kanehira S, Tanigawa M, Miyawaki Y, Harada T. Catalytic Enantioselective Alkylation and Arylation of Aldehydes by Using Grignard Reagents. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2010. [DOI: 10.1246/bcsj.20090232] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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174
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Abreu AR, Pereira MM, Bayón JC. Synthesis of new bis-BINOL-2,2′-ethers and bis-H8BINOL-2,2′-ethers evaluation of their Titanium complexes in the asymmetric ethylation of benzaldehyde. Tetrahedron 2010. [DOI: 10.1016/j.tet.2009.11.047] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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175
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Hatano M, Horibe T, Ishihara K. Chiral Lithium(I) Binaphtholate Salts for the Enantioselective Direct Mannich-Type Reaction with a Change of Syn/Anti and Absolute Stereochemistry. J Am Chem Soc 2009; 132:56-7. [DOI: 10.1021/ja909874b] [Citation(s) in RCA: 104] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Manabu Hatano
- Graduate School of Engineering, Nagoya University, and CREST, Japan Science and Technology Agency (JST), Furo-cho, Chikusa, Nagoya 464-8603, Japan
| | - Takahiro Horibe
- Graduate School of Engineering, Nagoya University, and CREST, Japan Science and Technology Agency (JST), Furo-cho, Chikusa, Nagoya 464-8603, Japan
| | - Kazuaki Ishihara
- Graduate School of Engineering, Nagoya University, and CREST, Japan Science and Technology Agency (JST), Furo-cho, Chikusa, Nagoya 464-8603, Japan
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176
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Zhang X, Zhang N, Guo X, Yang L, Hu W. Rhodium(II) catalyzed multi-component reactions of aryldiazoacetates with titanium(IV) isopropoxide and imines. Tetrahedron 2009. [DOI: 10.1016/j.tet.2009.07.049] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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177
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Reggelin M, Scholz J, Hamburger M. Helically chiral poly(quinoxalin-2,3-diyl)s: Toward the synthesis of stereoregular polymeric organocatalysts. ACTA ACUST UNITED AC 2009. [DOI: 10.1002/pola.23540] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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178
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Bishop J, Lou S, Schaus S. Enantioselective Addition of Boronates to Acyl Imines Catalyzed by Chiral Biphenols. Angew Chem Int Ed Engl 2009. [DOI: 10.1002/ange.200901023] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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179
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Xiao J, Loh TP. Design, Synthesis and Optical Resolution of New Bifunctional Ligand: 1,1′-Dimethyl-octahydro-8,8′-Biquinoline-7,7′-diol. Org Lett 2009; 11:2876-9. [DOI: 10.1021/ol900790z] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jian Xiao
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371
| | - Teck-Peng Loh
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371
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180
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Reetz MT, Guo H, Ma JA, Goddard R, Mynott RJ. Helical Triskelion Monophosphites as Ligands in Asymmetric Catalysis. J Am Chem Soc 2009; 131:4136-42. [DOI: 10.1021/ja809297a] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Manfred T. Reetz
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, 45470 Mülheim an der Ruhr, Germany
| | - Hongchao Guo
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, 45470 Mülheim an der Ruhr, Germany
| | - Jun-An Ma
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, 45470 Mülheim an der Ruhr, Germany
| | - Richard Goddard
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, 45470 Mülheim an der Ruhr, Germany
| | - Richard J. Mynott
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, 45470 Mülheim an der Ruhr, Germany
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181
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Simón L, Goodman JM. Mechanism of BINOL−Phosphoric Acid-Catalyzed Strecker Reaction of Benzyl Imines. J Am Chem Soc 2009; 131:4070-7. [DOI: 10.1021/ja808715j] [Citation(s) in RCA: 94] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Luis Simón
- Unilever Centre For Molecular Science Informatics, Department of Chemistry, Lensfield Road, Cambridge, CB2 1EW, U.K
| | - Jonathan M. Goodman
- Unilever Centre For Molecular Science Informatics, Department of Chemistry, Lensfield Road, Cambridge, CB2 1EW, U.K
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182
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Novara FR, Zhang X, Schröder D, Schwarz H. Gaseous Ni+ complexes with BINOL derivatives and chiral esters in the gas phase: an experimental and theoretical investigation. ACTA ACUST UNITED AC 2009. [DOI: 10.1135/cccc2008168] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
The gas-phase behavior of monocationic Ni(II) complexes that contain as building blocks optically pure BINOL derivatives and two chiral hydroxy esters is investigated by means of electrospray ionization (ESI) mass spectrometry. Upon collision-induced dissociation (CID), the complexes containing ethyl 2-hydroxypropionate (ethyl lactate) only lose the ester ligand. The complexes bearing ethyl 3-hydroxybutyrate instead either lose the ester ligands or undergo bond activation followed by elimination of the corresponding β-ketoester (ethyl acetylacetate) as revealed by deuterium labeling. Comparison of the results obtained for com- plexes with different chiralities reveals the operation of a significant stereochemical effect (SE) in the gas-phase dehydrogenation of ethyl 3-hydroxybutyrate by gaseous [(BINOLato)Ni]+ ions. Instead, no substantial differences in the CID patterns for the complexes bearing the ester-substituted BINOL derivative are found. The results provide insights into the gas-phase coordination of metal cations by BINOL derivatives and into the molecular features, which are responsible for gas-phase enantioselective processes. Additional mechanistic aspects are disclosed by exploratory calculations employing density functional theory using the B3LYP method.
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183
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Roy BN, Singh GP, Srivastava D, Jadhav HS, Saini MB, Aher UP. A Novel Method for Large-Scale Synthesis of Lamivudine through Cocrystal Formation of Racemic Lamivudine with (S)-(−)-1,1′-Bi(2-naphthol) [(S)-(BINOL)]. Org Process Res Dev 2009. [DOI: 10.1021/op800228h] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Bhairab Nath Roy
- Lupin Research Park, Lupin Ltd., 46A/47A Nande Village, Mulshi Taluka, Pune - 411042, India
| | - Girij Pal Singh
- Lupin Research Park, Lupin Ltd., 46A/47A Nande Village, Mulshi Taluka, Pune - 411042, India
| | - Dhananjai Srivastava
- Lupin Research Park, Lupin Ltd., 46A/47A Nande Village, Mulshi Taluka, Pune - 411042, India
| | | | - Manmeet B. Saini
- Lupin Research Park, Lupin Ltd., 46A/47A Nande Village, Mulshi Taluka, Pune - 411042, India
| | - Umesh P. Aher
- Lupin Research Park, Lupin Ltd., 46A/47A Nande Village, Mulshi Taluka, Pune - 411042, India
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184
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Bishop JA, Lou S, Schaus SE. Enantioselective addition of boronates to acyl imines catalyzed by chiral biphenols. Angew Chem Int Ed Engl 2009; 48:4337-40. [PMID: 19431168 PMCID: PMC2819183 DOI: 10.1002/anie.200901023] [Citation(s) in RCA: 66] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
On the big screen: A chiral biphenol catalyst screening protocol was developed for the rapid identification of enantioselective nucleophilic boronate reactions with acyl imines (see scheme). The approach successfully identified a unique catalyst for the reaction of aryl, vinyl, and alkynyl boronates. Mechanistic studies demonstrate boronate ligand exchange with the catalyst is necessary for activation towards nucleophilic addition.
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Affiliation(s)
- Joshua A. Bishop
- Department of Chemistry, Center for Chemical Methodology and Library Development at Boston University (CMLD-BU), Life Science and Engineering Building, Boston University, 24 Cummington Street, Boston, Massachusetts, 02215 (USA), Fax: (+1) 617-353-6466,
| | | | - Scott E. Schaus
- Department of Chemistry, Center for Chemical Methodology and Library Development at Boston University (CMLD-BU), Life Science and Engineering Building, Boston University, 24 Cummington Street, Boston, Massachusetts, 02215 (USA), Fax: (+1) 617-353-6466,
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185
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