51
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Incerti-Pradillos CA, Kabeshov MA, Malkov AV. Highly Stereoselective Synthesis ofZ-Homoallylic Alcohols by Kinetic Resolution of Racemic Secondary Allyl Boronates. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201300709] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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52
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Incerti-Pradillos CA, Kabeshov MA, Malkov AV. Highly Stereoselective Synthesis ofZ-Homoallylic Alcohols by Kinetic Resolution of Racemic Secondary Allyl Boronates. Angew Chem Int Ed Engl 2013; 52:5338-41. [DOI: 10.1002/anie.201300709] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2013] [Indexed: 01/18/2023]
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53
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Tsai AS, Chen M, Roush WR. Chiral Brønsted acid catalyzed enantioselective synthesis of anti-homopropargyl alcohols via kinetic resolution-aldehyde allenylboration using racemic allenylboronates. Org Lett 2013; 15:1568-71. [PMID: 23484801 PMCID: PMC3640598 DOI: 10.1021/ol4003459] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
A chiral phosphoric acid catalyzed kinetic resolution/allenylboration of racemic allenylboronates with aldehydes is described. Allenylboration of aldehydes with 2.8 equiv of allenylboronate (±)-1 in the presence of 10 mol % of catalyst (R)-2 provided anti-homopropargyl alcohols 3 in 83-95% yield with 9:1 to 20:1 diastereoselectivity and 73-95% ee. The catalyst enables the kinetic resolution of the racemic allenylboronate (±)-1 to set the methyl stereocenter and biases the facial attack of the aldehyde to set the stereochemistry of the hydroxyl group in 3.
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Affiliation(s)
- Andy S. Tsai
- Department of Chemistry, Scripps Florida, Jupiter, Florida 33458, United States
| | - Ming Chen
- Department of Chemistry, Scripps Florida, Jupiter, Florida 33458, United States
| | - William R. Roush
- Department of Chemistry, Scripps Florida, Jupiter, Florida 33458, United States
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54
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Fandrick DR, Reeves JT, Bakonyi JM, Nyalapatla PR, Tan Z, Niemeier O, Akalay D, Fandrick KR, Wohlleben W, Ollenberger S, Song JJ, Sun X, Qu B, Haddad N, Sanyal S, Shen S, Ma S, Byrne D, Chitroda A, Fuchs V, Narayanan BA, Grinberg N, Lee H, Yee N, Brenner M, Senanayake CH. Zinc Catalyzed and Mediated Asymmetric Propargylation of Trifluoromethyl Ketones with a Propargyl Boronate. J Org Chem 2013; 78:3592-615. [DOI: 10.1021/jo400080y] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Daniel R. Fandrick
- Chemical Development, Boehringer Ingelheim Pharmaceuticals Inc., 900 Ridgebury
Rd./PO BOX 368, Ridgefield, Connecticut 06877-0368, United States
| | - Jonathan T. Reeves
- Chemical Development, Boehringer Ingelheim Pharmaceuticals Inc., 900 Ridgebury
Rd./PO BOX 368, Ridgefield, Connecticut 06877-0368, United States
| | - Johanna M. Bakonyi
- Chemical Development, Boehringer Ingelheim Pharmaceuticals Inc., 900 Ridgebury
Rd./PO BOX 368, Ridgefield, Connecticut 06877-0368, United States
| | - Prasanth R. Nyalapatla
- Chemical Development, Boehringer Ingelheim Pharmaceuticals Inc., 900 Ridgebury
Rd./PO BOX 368, Ridgefield, Connecticut 06877-0368, United States
| | - Zhulin Tan
- Chemical Development, Boehringer Ingelheim Pharmaceuticals Inc., 900 Ridgebury
Rd./PO BOX 368, Ridgefield, Connecticut 06877-0368, United States
| | - Oliver Niemeier
- Boehringer Ingelheim GmbH & Co KG, Binger Strasse 173, 55216 Ingelheim am Rhein, Germany
| | - Deniz Akalay
- Boehringer Ingelheim GmbH & Co KG, Binger Strasse 173, 55216 Ingelheim am Rhein, Germany
| | - Keith R. Fandrick
- Chemical Development, Boehringer Ingelheim Pharmaceuticals Inc., 900 Ridgebury
Rd./PO BOX 368, Ridgefield, Connecticut 06877-0368, United States
| | - Wolfgang Wohlleben
- Boehringer Ingelheim GmbH & Co KG, Binger Strasse 173, 55216 Ingelheim am Rhein, Germany
| | - Swetlana Ollenberger
- Boehringer Ingelheim GmbH & Co KG, Binger Strasse 173, 55216 Ingelheim am Rhein, Germany
| | - Jinhua J. Song
- Chemical Development, Boehringer Ingelheim Pharmaceuticals Inc., 900 Ridgebury
Rd./PO BOX 368, Ridgefield, Connecticut 06877-0368, United States
| | - Xiufeng Sun
- Chemical Development, Boehringer Ingelheim Pharmaceuticals Inc., 900 Ridgebury
Rd./PO BOX 368, Ridgefield, Connecticut 06877-0368, United States
| | - Bo Qu
- Chemical Development, Boehringer Ingelheim Pharmaceuticals Inc., 900 Ridgebury
Rd./PO BOX 368, Ridgefield, Connecticut 06877-0368, United States
| | - Nizar Haddad
- Chemical Development, Boehringer Ingelheim Pharmaceuticals Inc., 900 Ridgebury
Rd./PO BOX 368, Ridgefield, Connecticut 06877-0368, United States
| | - Sanjit Sanyal
- Chemical Development, Boehringer Ingelheim Pharmaceuticals Inc., 900 Ridgebury
Rd./PO BOX 368, Ridgefield, Connecticut 06877-0368, United States
| | - Sherry Shen
- Chemical Development, Boehringer Ingelheim Pharmaceuticals Inc., 900 Ridgebury
Rd./PO BOX 368, Ridgefield, Connecticut 06877-0368, United States
| | - Shengli Ma
- Chemical Development, Boehringer Ingelheim Pharmaceuticals Inc., 900 Ridgebury
Rd./PO BOX 368, Ridgefield, Connecticut 06877-0368, United States
| | - Denis Byrne
- Chemical Development, Boehringer Ingelheim Pharmaceuticals Inc., 900 Ridgebury
Rd./PO BOX 368, Ridgefield, Connecticut 06877-0368, United States
| | - Ashish Chitroda
- Chemical Development, Boehringer Ingelheim Pharmaceuticals Inc., 900 Ridgebury
Rd./PO BOX 368, Ridgefield, Connecticut 06877-0368, United States
| | - Victor Fuchs
- Chemical Development, Boehringer Ingelheim Pharmaceuticals Inc., 900 Ridgebury
Rd./PO BOX 368, Ridgefield, Connecticut 06877-0368, United States
| | - Bikshandarkoil A. Narayanan
- Chemical Development, Boehringer Ingelheim Pharmaceuticals Inc., 900 Ridgebury
Rd./PO BOX 368, Ridgefield, Connecticut 06877-0368, United States
| | - Nelu Grinberg
- Chemical Development, Boehringer Ingelheim Pharmaceuticals Inc., 900 Ridgebury
Rd./PO BOX 368, Ridgefield, Connecticut 06877-0368, United States
| | - Heewon Lee
- Chemical Development, Boehringer Ingelheim Pharmaceuticals Inc., 900 Ridgebury
Rd./PO BOX 368, Ridgefield, Connecticut 06877-0368, United States
| | - Nathan Yee
- Chemical Development, Boehringer Ingelheim Pharmaceuticals Inc., 900 Ridgebury
Rd./PO BOX 368, Ridgefield, Connecticut 06877-0368, United States
| | - Michael Brenner
- Boehringer Ingelheim GmbH & Co KG, Binger Strasse 173, 55216 Ingelheim am Rhein, Germany
| | - Chris H. Senanayake
- Chemical Development, Boehringer Ingelheim Pharmaceuticals Inc., 900 Ridgebury
Rd./PO BOX 368, Ridgefield, Connecticut 06877-0368, United States
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55
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Kohn BL, Ichiishi N, Jarvo ER. Silver-Catalyzed Allenylation and Enantioselective Propargylation Reactions of Ketones. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201206971] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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56
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Kohn BL, Ichiishi N, Jarvo ER. Silver-Catalyzed Allenylation and Enantioselective Propargylation Reactions of Ketones. Angew Chem Int Ed Engl 2013; 52:4414-7. [DOI: 10.1002/anie.201206971] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2012] [Revised: 12/05/2012] [Indexed: 11/07/2022]
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57
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Enantioselective Petasis reaction among salicylaldehydes, amines, and organoboronic acids catalyzed by BINOL. Tetrahedron 2013. [DOI: 10.1016/j.tet.2012.11.043] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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58
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Luan Y, Schaus SE. Enantioselective addition of boronates to o-quinone methides catalyzed by chiral biphenols. J Am Chem Soc 2012. [PMID: 23206197 DOI: 10.1021/ja309076g] [Citation(s) in RCA: 182] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Chiral biphenols were found to catalyze the enantioselective asymmetric addition of aryl- or alkenylboronates to o-quinone methides. Substituted 2-styryl phenols were obtained in good yields (up to 95%) with high enantiomeric ratios (up to 98:2) in the presence of 10 mol % 3,3'-Br(2)-BINOL. A two-step synthesis of (S)-4-methoxydalbergione in good yield and selectivity was achieved.
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Affiliation(s)
- Yi Luan
- Department of Chemistry and Center for Chemical Methodology and Library Development (CMLD-BU), Life Sciences and Engineering Building, Boston University, 24 Cummington Street, Boston, Massachusetts 02215, United States
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59
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Le PQ, Nguyen TS, May JA. A general method for the enantioselective synthesis of α-chiral heterocycles. Org Lett 2012; 14:6104-7. [PMID: 23157440 DOI: 10.1021/ol3030605] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The enantioselective formation of stereocenters proximal to unprotected heterocycles has been accomplished. Thus, vinyl boronic acids are added to heterocycle-appended enones via a modified-BINOL catalyst. Catalyst design was key to enable a general reaction. High yields and useful er's are observed for a host of common heteroaryls.
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Affiliation(s)
- Phong Q Le
- Department of Chemistry, University of Houston, 136 Fleming Building, Houston, Texas 77204-5003, USA
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60
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Geary LM, Leung JC, Krische MJ. Ruthenium-catalyzed reductive coupling of 1,3-enynes and aldehydes by transfer hydrogenation: anti-diastereoselective carbonyl propargylation. Chemistry 2012; 18:16823-7. [PMID: 23147989 DOI: 10.1002/chem.201202446] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2012] [Revised: 09/12/2012] [Indexed: 12/25/2022]
Abstract
Under the conditions of ruthenium-catalyzed transfer hydrogenation employing isopropanol as a source of hydrogen, isopropoxy-substituted enyne 1 b and aldehydes 3 a-3 l engage in reductive coupling to provide products of propargylation 4 a-4 l with good to complete levels of anti-diastereoselectivity. The unprotected tertiary hydroxy moiety of isopropoxy enyne 1 b is required to enforce diastereoselectivity. Deuterium-labeling studies corroborate reversible enyne hydrometalation in advance of carbonyl addition. As demonstrated in the conversion of 4 f-h and 4 k to 5 f-h and 5 k, the isopropoxy group of the product is readily cleaved upon exposure to aqueous sodium hydroxide to reveal the terminal alkyne.
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Affiliation(s)
- Laina M Geary
- Department of Chemistry & Biochemistry, The University of Texas at Austin, 78712-1167, USA
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61
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Wu X, Cao H, Guo R, Li K, Wang F, Yang H. Effect of cholesteric liquid crystalline elastomer with binaphthalene crosslinkings on thermal and optical properties of a liquid crystal that show smectic A-cholesteric phase transition. POLYM ADVAN TECHNOL 2012. [DOI: 10.1002/pat.3075] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Xiaojuan Wu
- Department of Materials Physics and Chemistry, School of Materials Science and Engineering; University of Science and Technology Beijing; Beijing 100083 P. R. China
| | - Hui Cao
- Department of Materials Physics and Chemistry, School of Materials Science and Engineering; University of Science and Technology Beijing; Beijing 100083 P. R. China
| | - Renwei Guo
- Department of Materials Physics and Chemistry, School of Materials Science and Engineering; University of Science and Technology Beijing; Beijing 100083 P. R. China
| | - Kexuan Li
- Department of Materials Physics and Chemistry, School of Materials Science and Engineering; University of Science and Technology Beijing; Beijing 100083 P. R. China
| | - Feifei Wang
- Department of Materials Physics and Chemistry, School of Materials Science and Engineering; University of Science and Technology Beijing; Beijing 100083 P. R. China
| | - Huai Yang
- Department of Materials Physics and Chemistry, School of Materials Science and Engineering; University of Science and Technology Beijing; Beijing 100083 P. R. China
- Department of Materials Science and Engineering, College of Engineering; Peking University; Beijing 100871 P. R. China
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62
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Shu C, Liu MQ, Sun YZ, Ye LW. Efficient Synthesis of γ-Lactones via Gold-Catalyzed Tandem Cycloisomerization/Oxidation. Org Lett 2012; 14:4958-61. [DOI: 10.1021/ol302323a] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Chao Shu
- Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, P. R. China
| | - Meng-Qi Liu
- Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, P. R. China
| | - Yu-Zhe Sun
- Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, P. R. China
| | - Long-Wu Ye
- Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, P. R. China
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63
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Chen M, Roush WR. Enantioselective synthesis of anti- and syn-homopropargyl alcohols via chiral Brønsted acid catalyzed asymmetric allenylboration reactions. J Am Chem Soc 2012; 134:10947-52. [PMID: 22731887 PMCID: PMC3474359 DOI: 10.1021/ja3031467] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Chiral Brønsted acid catalyzed asymmetric allenylboration reactions are described. Under optimized conditions, anti-homopropargyl alcohols 2 are obtained in high yields with excellent diastereo- and enantioselectivities from stereochemically matched aldehyde allenylboration reactions with (M)-1 catalyzed by the chiral phosphoric acid (S)-4. The syn-isomers 3 can also be obtained in good diastereoselectivities and excellent enantioselectivities from the mismatched allenylboration reactions of aromatic aldehydes using (M)-1 in the presence of the enantiomeric phosphoric acid (R)-4. The stereochemistry of the methyl group introduced into 2 and 3 is controlled by the chirality of the allenylboronate (M)-1, whereas the configuration of the new hydroxyl stereocenter is controlled by the enantioselectivity of the chiral phosphoric acid catalyst used in these reactions. The synthetic utility of this methodology was further demonstrated in highly diastereoselective syntheses of a variety of anti, anti-stereotriads, the direct synthesis of which has constituted a significant challenge using previous generations of aldol and crotylmetal reagents.
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Affiliation(s)
- Ming Chen
- Department of Chemistry, Scripps Florida, Jupiter, Florida 33458
| | - William R. Roush
- Department of Chemistry, Scripps Florida, Jupiter, Florida 33458
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64
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Wu X, Cao H, Guo R, Li K, Wang F, Gao Y, Yao W, Zhang L, Chen X, Yang H. Influence of Interim Alkyl Chain Length on Phase Transitions and Wide-Band Reflective Behaviors of Side-Chain Liquid Crystalline Elastomers with Binaphthalene Crosslinkings. Macromolecules 2012. [DOI: 10.1021/ma300618t] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Xiaojuan Wu
- Department of Materials
Physics
and Chemistry, School of Materials Science and Engineering, University
of Science and Technology Beijing, Beijing 100083, P. R. China
| | - Hui Cao
- Department of Materials
Physics
and Chemistry, School of Materials Science and Engineering, University
of Science and Technology Beijing, Beijing 100083, P. R. China
| | - Renwei Guo
- Department of Materials
Physics
and Chemistry, School of Materials Science and Engineering, University
of Science and Technology Beijing, Beijing 100083, P. R. China
| | - Kexuan Li
- Department of Materials
Physics
and Chemistry, School of Materials Science and Engineering, University
of Science and Technology Beijing, Beijing 100083, P. R. China
| | - Feifei Wang
- Department of Materials
Physics
and Chemistry, School of Materials Science and Engineering, University
of Science and Technology Beijing, Beijing 100083, P. R. China
| | - Yanzi Gao
- Department of Materials
Physics
and Chemistry, School of Materials Science and Engineering, University
of Science and Technology Beijing, Beijing 100083, P. R. China
| | - Wenhuan Yao
- Department of Materials
Physics
and Chemistry, School of Materials Science and Engineering, University
of Science and Technology Beijing, Beijing 100083, P. R. China
| | - Lanying Zhang
- Department of Materials Science
and Engineering, College of Engineering, Peking University, Beijing
100871, P. R. China
| | - Xiaofang Chen
- Department
of Polymer Science
and Engineering and The Key Laboratory of Polymer Chemistry and Physics
of Ministry of Education, College of Chemistry, Peking University,
Beijing 100871, P. R. China
| | - Huai Yang
- Department of Materials
Physics
and Chemistry, School of Materials Science and Engineering, University
of Science and Technology Beijing, Beijing 100083, P. R. China
- Department of Materials Science
and Engineering, College of Engineering, Peking University, Beijing
100871, P. R. China
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65
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Woo SK, Geary LM, Krische MJ. Enantioselective Carbonyl Propargylation by Iridium-Catalyzed Transfer Hydrogenative Coupling of Alcohols and Propargyl Chlorides. Angew Chem Int Ed Engl 2012; 51:7830-4. [DOI: 10.1002/anie.201203334] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2012] [Indexed: 11/05/2022]
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66
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Woo SK, Geary LM, Krische MJ. Enantioselective Carbonyl Propargylation by Iridium-Catalyzed Transfer Hydrogenative Coupling of Alcohols and Propargyl Chlorides. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201203334] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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67
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Geary LM, Woo SK, Leung JC, Krische MJ. Diastereo- and Enantioselective Iridium-Catalyzed Carbonyl Propargylation from the Alcohol or Aldehyde Oxidation Level: 1,3-Enynes as Allenylmetal Equivalents. Angew Chem Int Ed Engl 2012; 51:2972-6. [DOI: 10.1002/anie.201200239] [Citation(s) in RCA: 88] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2012] [Indexed: 11/09/2022]
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68
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Geary LM, Woo SK, Leung JC, Krische MJ. Diastereo- and Enantioselective Iridium-Catalyzed Carbonyl Propargylation from the Alcohol or Aldehyde Oxidation Level: 1,3-Enynes as Allenylmetal Equivalents. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201200239] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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69
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Jain P, Wang H, Houk KN, Antilla JC. Brønsted acid catalyzed asymmetric propargylation of aldehydes. Angew Chem Int Ed Engl 2012; 51:1391-4. [PMID: 22223476 PMCID: PMC3334334 DOI: 10.1002/anie.201107407] [Citation(s) in RCA: 114] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2011] [Indexed: 11/07/2022]
Affiliation(s)
- Pankaj Jain
- Department of Chemistry, University of South Florida, 4202 E. Fowler Avenue, Tampa, FL 33620 (USA)
| | - Hao Wang
- Department of Chemistry and Biochemistry, University of California, Los Angeles, 607 Charles E. Young Drive East, Los Angeles, CA 90095 (USA)
| | - Kendall N. Houk
- Department of Chemistry and Biochemistry, University of California, Los Angeles, 607 Charles E. Young Drive East, Los Angeles, CA 90095 (USA)
| | - Jon C. Antilla
- Department of Chemistry, University of South Florida, 4202 E. Fowler Avenue, Tampa, FL 33620 (USA)
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70
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Han WY, Wu ZJ, Zhang XM, Yuan WC. Enantioselective organocatalytic three-component Petasis reaction among salicylaldehydes, amines, and organoboronic acids. Org Lett 2012; 14:976-9. [PMID: 22292670 DOI: 10.1021/ol203109a] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The catalytic enantioselective three-component Petasis reaction among salicylaldehydes, amines, and organoboronic acids with a newly designed thiourea-binol catalyst is presented. A broad range of alkylaminophenols can be obtained in good yield (up to 92%) and good to high enantioselectivity (up to 95% ee). A possible reaction pathway for this catalytic enantioselective Petasis reaction is tentatively proposed.
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Affiliation(s)
- Wen-Yong Han
- National Engineering Research Center of Chiral Drugs, Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, China
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71
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Xing CH, Liao YX, Zhang Y, Sabarova D, Bassous M, Hu QS. Asymmetric Allylboration of Aldehydes with Pinacol Allylboronates Catalyzed by 1,1′-Spirobiindane-7,7′-diol (SPINOL) Based Phosphoric Acids. European J Org Chem 2012. [DOI: 10.1002/ejoc.201101739] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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72
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Jain P, Wang H, Houk KN, Antilla JC. Brønsted Acid Catalyzed Asymmetric Propargylation of Aldehydes. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201107407] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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73
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Turner HM, Patel J, Niljianskul N, Chong JM. Binaphthol-catalyzed asymmetric conjugate arylboration of enones. Org Lett 2011; 13:5796-9. [PMID: 21992717 DOI: 10.1021/ol202391r] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Conjugate addition of arylboronates to α,β-unsaturated ketones may be catalyzed by chiral binaphthols with enantioselectivities of up to 99:1. Best results were observed with 3,3'-dichloro-BINOL. This chemistry was applied to syntheses of intermediates for syntheses of (+)-indatraline and (+)-tolterodine.
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Affiliation(s)
- Heather M Turner
- Guelph-Waterloo Centre for Graduate Work in Chemistry and Biochemistry, (GWC)2, Department of Chemistry, University of Waterloo, Waterloo, Ontario, Canada N2L 3G1
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74
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Huang YY, Chakrabarti A, Morita N, Schneider U, Kobayashi S. A Catalytic Asymmetric Borono Variant of Hosomi-Sakurai Reactions with N,O-Aminals. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201105182] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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75
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Huang YY, Chakrabarti A, Morita N, Schneider U, Kobayashi S. A Catalytic Asymmetric Borono Variant of Hosomi-Sakurai Reactions with N,O-Aminals. Angew Chem Int Ed Engl 2011; 50:11121-4. [DOI: 10.1002/anie.201105182] [Citation(s) in RCA: 72] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2011] [Indexed: 11/07/2022]
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