1
|
Kaur M, Sharma E, Singh A, Singh P, Singh KN. Experimental and Theoretical Observations on the Intramolecular Nucleophilic Addition of α-Amino Carbanions to Arynes: Synthesis of 1-Aryl-1,2,3,4-tetrahydroisoquinolines. European J Org Chem 2016. [DOI: 10.1002/ejoc.201600567] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Manjot Kaur
- Department of Chemistry and Centre of Advanced Studies in Chemistry; Panjab University; 160014 Chandigarh India
| | - Esha Sharma
- Department of Chemistry and Centre of Advanced Studies in Chemistry; Panjab University; 160014 Chandigarh India
| | - Amritpal Singh
- Department of Chemistry and Centre of Advanced Studies in Chemistry; Panjab University; 160014 Chandigarh India
| | - Paramjit Singh
- Department of Chemistry and Centre of Advanced Studies in Chemistry; Panjab University; 160014 Chandigarh India
| | - Kamal Nain Singh
- Department of Chemistry and Centre of Advanced Studies in Chemistry; Panjab University; 160014 Chandigarh India
| |
Collapse
|
2
|
Chatterjee N, Arfeen M, Bharatam PV, Goswami A. A Metal and Base-Free Chemoselective Primary Amination of Boronic Acids Using Cyanamidyl/Arylcyanamidyl Radical as Aminating Species: Synthesis and Mechanistic Studies by Density Functional Theory. J Org Chem 2016; 81:5120-7. [DOI: 10.1021/acs.joc.6b00671] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Nachiketa Chatterjee
- Department
of Chemistry, Indian Institute of Technology Ropar, Nangal Road, Rupnagar 140001, Punjab, India
| | - Minhajul Arfeen
- Department
of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Sector 67, S. A. S. Nagar 160062, Punjab, India
| | - Prasad V. Bharatam
- Department
of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Sector 67, S. A. S. Nagar 160062, Punjab, India
| | - Avijit Goswami
- Department
of Chemistry, Indian Institute of Technology Ropar, Nangal Road, Rupnagar 140001, Punjab, India
| |
Collapse
|
3
|
Affiliation(s)
- Khaled M. Elattar
- Chemistry Department, Faculty of Science, Mansoura University, Mansoura, Egypt
| | - Ibrahim Youssef
- Chemistry Department, Faculty of Science, Mansoura University, Mansoura, Egypt
| | - Ahmed A. Fadda
- Chemistry Department, Faculty of Science, Mansoura University, Mansoura, Egypt
| |
Collapse
|
4
|
Abstract
Dissection of lepadiformine by a double hydroamination transform affords a simple achiral amino diene. This reaction is accomplished in the forward sense by amine-directed hydroboration and an oxidative alkyl shift to nitrogen, both of which occur with high stereoselectivity to generate three stereogenic centers and the lepadiformine skeleton.
Collapse
Affiliation(s)
- M Greg Tabor
- Department of Chemistry, The Scripps Research Institute , 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Ryan A Shenvi
- Department of Chemistry, The Scripps Research Institute , 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| |
Collapse
|
5
|
Metallinos C, Iraj Sadraei S, Zhukovskaya N. Diastereoselective Lithiation of N-Silyl-Protected (S)-Tetrahydro-1H-pyrrolo[1,2-c]imidazol-3(2H)-one. HETEROCYCLES 2014. [DOI: 10.3987/com-13-s(s)29] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
6
|
Cochrane EJ, Leonori D, Hassall LA, Coldham I. Synthesis and kinetic resolution of N-Boc-2-arylpiperidines. Chem Commun (Camb) 2014; 50:9910-3. [DOI: 10.1039/c4cc04576a] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
An efficient kinetic resolution of 2-arylpiperidines was developed using a chiral base.
Collapse
Affiliation(s)
| | | | | | - Iain Coldham
- Department of Chemistry
- University of Sheffield
- Sheffield, UK
| |
Collapse
|
7
|
Selective C–H Activations Using Frustrated Lewis Pairs. Applications in Organic Synthesis. Top Curr Chem (Cham) 2013; 334:171-90. [DOI: 10.1007/128_2012_394] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
|
8
|
Mitchell EA, Peschiulli A, Lefevre N, Meerpoel L, Maes BUW. Direct α-Functionalization of Saturated Cyclic Amines. Chemistry 2012; 18:10092-142. [DOI: 10.1002/chem.201201539] [Citation(s) in RCA: 356] [Impact Index Per Article: 29.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
9
|
Singh KN, Singh P, Singh P, Deol YS. Nucleophilic Addition of β-Amino Carbanions to Arynes: One-Pot Synthesis of 4-Aryl-N-methyl-1,2,3,4-tetrahydroisoquinolines. Org Lett 2012; 14:2202-5. [DOI: 10.1021/ol300360r] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Kamal Nain Singh
- Department of Chemistry, Panjab University, Chandigarh-160014, India
| | - Paramjit Singh
- Department of Chemistry, Panjab University, Chandigarh-160014, India
| | - Pushpinder Singh
- Department of Chemistry, Panjab University, Chandigarh-160014, India
| | | |
Collapse
|
10
|
Haag B, Mosrin M, Ila H, Malakhov V, Knochel P. Regio- and Chemoselective Metalation of Arenes and Heteroarenes Using Hindered Metal Amide Bases. Angew Chem Int Ed Engl 2011; 50:9794-824. [DOI: 10.1002/anie.201101960] [Citation(s) in RCA: 324] [Impact Index Per Article: 24.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2011] [Indexed: 11/08/2022]
|
11
|
Haag B, Mosrin M, Ila H, Malakhov V, Knochel P. Regio- und chemoselektive Metallierung von Arenen und Heteroarenen mit gehinderten Metallamidbasen. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201101960] [Citation(s) in RCA: 130] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
12
|
Dixit VA, Rathi PC, Bharatam PV. Intramolecular dihydrogen bond: A new perspective in Lewis acid catalyzed nucleophilic epoxide ring opening reaction. ACTA ACUST UNITED AC 2010. [DOI: 10.1016/j.theochem.2010.09.020] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
13
|
Carbone G, O’Brien P, Hilmersson G. Asymmetric Deprotonation using s-BuLi or i-PrLi and Chiral Diamines in THF: The Diamine Matters. J Am Chem Soc 2010; 132:15445-50. [DOI: 10.1021/ja107672h] [Citation(s) in RCA: 68] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Giorgio Carbone
- Department of Chemistry, University of York, Heslington, York YO10 5DD, U.K., and Department of Chemistry, University of Gothenburg, SE-412 96 Göteborg, Sweden
| | - Peter O’Brien
- Department of Chemistry, University of York, Heslington, York YO10 5DD, U.K., and Department of Chemistry, University of Gothenburg, SE-412 96 Göteborg, Sweden
| | - Göran Hilmersson
- Department of Chemistry, University of York, Heslington, York YO10 5DD, U.K., and Department of Chemistry, University of Gothenburg, SE-412 96 Göteborg, Sweden
| |
Collapse
|
14
|
Gammon JJ, Gessner VH, Barker GR, Granander J, Whitwood AC, Strohmann C, O’Brien P, Kelly B. Synthesis of P-Stereogenic Compounds via Kinetic Deprotonation and Dynamic Thermodynamic Resolution of Phosphine Sulfides: Opposite Sense of Induction Using (−)-Sparteine. J Am Chem Soc 2010; 132:13922-7. [DOI: 10.1021/ja1060966] [Citation(s) in RCA: 65] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Jonathan J. Gammon
- Department of Chemistry, University of York, Heslington, York YO10 5DD, U.K., Anorganische Chemie, Technische Universität Dortmund, Otto-Hahn-Strasse 6, 44227 Dortmund, Germany, and Celtic Catalysts Ltd., Nova Centre, Belfield Innovation Park, Dublin 4, Ireland
| | - Viktoria H. Gessner
- Department of Chemistry, University of York, Heslington, York YO10 5DD, U.K., Anorganische Chemie, Technische Universität Dortmund, Otto-Hahn-Strasse 6, 44227 Dortmund, Germany, and Celtic Catalysts Ltd., Nova Centre, Belfield Innovation Park, Dublin 4, Ireland
| | - Greg R. Barker
- Department of Chemistry, University of York, Heslington, York YO10 5DD, U.K., Anorganische Chemie, Technische Universität Dortmund, Otto-Hahn-Strasse 6, 44227 Dortmund, Germany, and Celtic Catalysts Ltd., Nova Centre, Belfield Innovation Park, Dublin 4, Ireland
| | - Johan Granander
- Department of Chemistry, University of York, Heslington, York YO10 5DD, U.K., Anorganische Chemie, Technische Universität Dortmund, Otto-Hahn-Strasse 6, 44227 Dortmund, Germany, and Celtic Catalysts Ltd., Nova Centre, Belfield Innovation Park, Dublin 4, Ireland
| | - Adrian C. Whitwood
- Department of Chemistry, University of York, Heslington, York YO10 5DD, U.K., Anorganische Chemie, Technische Universität Dortmund, Otto-Hahn-Strasse 6, 44227 Dortmund, Germany, and Celtic Catalysts Ltd., Nova Centre, Belfield Innovation Park, Dublin 4, Ireland
| | - Carsten Strohmann
- Department of Chemistry, University of York, Heslington, York YO10 5DD, U.K., Anorganische Chemie, Technische Universität Dortmund, Otto-Hahn-Strasse 6, 44227 Dortmund, Germany, and Celtic Catalysts Ltd., Nova Centre, Belfield Innovation Park, Dublin 4, Ireland
| | - Peter O’Brien
- Department of Chemistry, University of York, Heslington, York YO10 5DD, U.K., Anorganische Chemie, Technische Universität Dortmund, Otto-Hahn-Strasse 6, 44227 Dortmund, Germany, and Celtic Catalysts Ltd., Nova Centre, Belfield Innovation Park, Dublin 4, Ireland
| | - Brian Kelly
- Department of Chemistry, University of York, Heslington, York YO10 5DD, U.K., Anorganische Chemie, Technische Universität Dortmund, Otto-Hahn-Strasse 6, 44227 Dortmund, Germany, and Celtic Catalysts Ltd., Nova Centre, Belfield Innovation Park, Dublin 4, Ireland
| |
Collapse
|
15
|
Barker G, O’Brien P, Campos KR. Diamine-Free Lithiation−Trapping of N-Boc Heterocycles using s-BuLi in THF. Org Lett 2010; 12:4176-9. [DOI: 10.1021/ol1017799] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Graeme Barker
- Department of Chemistry, University of York, Heslington, York YO10 5DD, U.K., and Department of Process Research, Merck Research Laboratories, Rahway, New Jersey 07065
| | - Peter O’Brien
- Department of Chemistry, University of York, Heslington, York YO10 5DD, U.K., and Department of Process Research, Merck Research Laboratories, Rahway, New Jersey 07065
| | - Kevin R. Campos
- Department of Chemistry, University of York, Heslington, York YO10 5DD, U.K., and Department of Process Research, Merck Research Laboratories, Rahway, New Jersey 07065
| |
Collapse
|
16
|
Metallinos C, Zaifman J, Dudding T, Van Belle L, Taban K. Asymmetric Lithiation of Boron Trifluoride‐Activated Aminoferrocenes: An Experimental and Computational Investigation. Adv Synth Catal 2010. [DOI: 10.1002/adsc.201000306] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Costa Metallinos
- Department of Chemistry, Brock University, 500 Glenridge Avenue, St. Catharines, Ontario L2S 3A1, Canada, Fax: (+1)‐905‐682‐9020; phone: (+1)‐905‐688‐5550, ext. 3848
| | - Josh Zaifman
- Department of Chemistry, Brock University, 500 Glenridge Avenue, St. Catharines, Ontario L2S 3A1, Canada, Fax: (+1)‐905‐682‐9020; phone: (+1)‐905‐688‐5550, ext. 3848
| | - Travis Dudding
- Department of Chemistry, Brock University, 500 Glenridge Avenue, St. Catharines, Ontario L2S 3A1, Canada, Fax: (+1)‐905‐682‐9020; phone: (+1)‐905‐688‐5550, ext. 3848
| | - Lori Van Belle
- Department of Chemistry, Brock University, 500 Glenridge Avenue, St. Catharines, Ontario L2S 3A1, Canada, Fax: (+1)‐905‐682‐9020; phone: (+1)‐905‐688‐5550, ext. 3848
| | - Keivan Taban
- Department of Chemistry, Brock University, 500 Glenridge Avenue, St. Catharines, Ontario L2S 3A1, Canada, Fax: (+1)‐905‐682‐9020; phone: (+1)‐905‐688‐5550, ext. 3848
| |
Collapse
|
17
|
Jaric M, Haag B, Unsinn A, Karaghiosoff K, Knochel P. Hoch selektive Metallierungen von Pyridinen und verwandten Heterocyclen mithilfe frustrierter Lewis-Paare sowie tmp-Zink- und tmp-Magnesium-Basen mit BF3⋅OEt2. Angew Chem Int Ed Engl 2010. [DOI: 10.1002/ange.201002031] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
|
18
|
Jaric M, Haag B, Unsinn A, Karaghiosoff K, Knochel P. Highly Selective Metalations of Pyridines and Related Heterocycles Using New Frustrated Lewis Pairs or tmp-Zinc and tmp-Magnesium Bases with BF3⋅OEt2. Angew Chem Int Ed Engl 2010; 49:5451-5. [DOI: 10.1002/anie.201002031] [Citation(s) in RCA: 118] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
19
|
Lee WK, Park YS, Beak P. Dynamic thermodynamic resolution: advantage by separation of equilibration and resolution. Acc Chem Res 2009; 42:224-34. [PMID: 19152329 DOI: 10.1021/ar8000662] [Citation(s) in RCA: 68] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
In the investigation of a chemical reaction, researchers typically survey variables such as time, temperature, and stoichiometry to optimize yields. This Account demonstrates how control of these variables, often in nontraditional ways, can provide significant improvements in enantiomeric ratios for asymmetric reactions. Dynamic thermodynamic resolution (DTR) offers a convenient method for the resolution of enantiomeric products in the course of a reaction. This process depends on an essential requirement: the equilibration of the penultimate diastereomers must be subject to external control. As a general case, the reaction of A(R), A(S) with B under the influence of the chiral species, L*, gives resolved products C(R) and C(S). In the first step of dynamic resolution under thermodynamic control, the enantiomeric reactants A(R) and A(S) and L* form the diastereomers A(R)/L* and A(S)/L*. The equilibrium between A(R) and A(S) can be rapid, slow, or not operative, and L* can represent a ligand, an auxiliary, or a crystallization process that provides a chiral environment. Second, the populations of the diastereomers are controlled, usually by thermal equilibration. Finally, the reaction of the diastereomers with a reagent B provides the enantiomeric products C(R) and C(S). The control of the diastereomeric equilibrium distinguishes DTR from other resolution techniques. By contrast, physical resolutions separate thermodynamically stable, nonequilibrating diastereomers, and dynamic kinetic resolutions utilize kinetic control for reactions of rapidly equilibrating diastereomers. The dynamic thermodynamic resolutions discussed in this Account illustrate cases of significantly improved enantioselectivities using this technique. Although many of the well-recognized cases come from organolithium chemistry, the principles are general, and we also present cases facilitated by other chemistries. This approach has been used to control enantioselectivities in a number of different reactions, with improvements in enantiomeric ratios up to 99% from essentially racemic reactants.
Collapse
Affiliation(s)
- Won Koo Lee
- Department of Chemistry and Interdisciplinary Programs of Integrated Biotechnology, Sogang University, Seoul 121-742, Korea
| | - Yong Sun Park
- Department of Chemistry and Bio/Molecular Information Center, Konkuk University, Seoul 143-701, Korea
| | - Peter Beak
- Department of Chemistry, University of Illinois, 600 South Mathews Avenue, Urbana, Illinois 61801
| |
Collapse
|
20
|
Seebach D, Grošelj U, Badine D, Schweizer W, Beck A. Isolation and X-Ray Structures of Reactive Intermediates of Organocatalysis with Diphenylprolinol Ethers and with Imidazolidinones. Helv Chim Acta 2008. [DOI: 10.1002/hlca.200890216] [Citation(s) in RCA: 155] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
21
|
Metallinos C, Zaifman J, Dodge L. Aminoferrocene Lithiation by Boron Trifluoride Activation. Org Lett 2008; 10:3527-30. [DOI: 10.1021/ol8013182] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Costa Metallinos
- Department of Chemistry, Brock University, 500 Glenridge Avenue, St. Catharines, Ontario L2S 3A1, Canada
| | - Josh Zaifman
- Department of Chemistry, Brock University, 500 Glenridge Avenue, St. Catharines, Ontario L2S 3A1, Canada
| | - Laura Dodge
- Department of Chemistry, Brock University, 500 Glenridge Avenue, St. Catharines, Ontario L2S 3A1, Canada
| |
Collapse
|
22
|
Kessar S, Singh P, Singh K, Bharatam P, Sharma A, Lata S, Kaur A. A Study of BF3-Promotedortho Lithiation of Anilines and DFT Calculations on the Role of Fluorine–Lithium Interactions. Angew Chem Int Ed Engl 2008. [DOI: 10.1002/ange.200705967] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
23
|
Kessar S, Singh P, Singh K, Bharatam P, Sharma A, Lata S, Kaur A. A Study of BF3-Promotedortho Lithiation of Anilines and DFT Calculations on the Role of Fluorine–Lithium Interactions. Angew Chem Int Ed Engl 2008; 47:4703-6. [DOI: 10.1002/anie.200705967] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|