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Pereira AA, Pereira AS, de Mello AC, Carpanez AG, Horta BAC, Amarante GW. Methylsulfenylation of Electrophilic Carbon Atoms: Reaction Development, Scope, and Mechanism. European J Org Chem 2017. [DOI: 10.1002/ejoc.201601613] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Adriane A. Pereira
- Chemistry Department; Federal University of Juiz de Fora, Cidade Universitária; 36036-900 São Pedro, Juiz de Fora Brazil
| | - Amanda S. Pereira
- Chemistry Department; Federal University of Juiz de Fora, Cidade Universitária; 36036-900 São Pedro, Juiz de Fora Brazil
| | - Amanda C. de Mello
- Chemistry Department; Federal University of Juiz de Fora, Cidade Universitária; 36036-900 São Pedro, Juiz de Fora Brazil
| | - Arthur G. Carpanez
- Chemistry Department; Federal University of Juiz de Fora, Cidade Universitária; 36036-900 São Pedro, Juiz de Fora Brazil
| | - Bruno A. C. Horta
- Chemistry Institute; Federal University of Rio de Janeiro; Cidade Universitária, CT Centro de Tecnologia; 21941-909 Rio de Janeiro Brazil
| | - Giovanni W. Amarante
- Chemistry Department; Federal University of Juiz de Fora, Cidade Universitária; 36036-900 São Pedro, Juiz de Fora Brazil
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2
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Applications of sodium borohydride procedure for the reductive removal of Evans and other chiral auxiliaries. Tetrahedron 2016. [DOI: 10.1016/j.tet.2015.09.076] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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3
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Wang T, Yu Z, Hoon DL, Huang KW, Lan Y, Lu Y. Highly enantioselective construction of tertiary thioethers and alcohols via phosphine-catalyzed asymmetric γ-addition reactions of 5 H-thiazol-4-ones and 5 H-oxazol-4-ones: scope and mechanistic understandings. Chem Sci 2015; 6:4912-4922. [PMID: 29142722 PMCID: PMC5664357 DOI: 10.1039/c5sc01614b] [Citation(s) in RCA: 114] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2015] [Accepted: 06/02/2015] [Indexed: 12/11/2022] Open
Abstract
Phosphine-catalyzed highly enantioselective γ-additions of 5H-thiazol-4-ones and 5H-oxazol-4-ones to allenoates have been developed for the first time. With the employment of amino-acid derived bifunctional phosphines, a wide range of substituted 5H-thiazol-4-one and 5H-oxazol-4-one derivatives bearing heteroatom (S or O)-containing tertiary chiral centers were constructed in high yields and excellent enantioselectivities. The reported method provides facile access to enantioenriched tertiary thioethers/alcohols. The mechanism of the γ-addition reaction was investigated by performing DFT calculations, and the hydrogen bonding interactions between the Brønsted acid moiety of the phosphine catalysts and the "C[double bond, length as m-dash]O" unit of the donor molecules were shown to be crucial in asymmetric induction.
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Affiliation(s)
- Tianli Wang
- Department of Chemistry , National University of Singapore , 3 Science Drive 3 , Singapore 117543 , Singapore .
| | - Zhaoyuan Yu
- School of Chemistry and Chemical Engineering , Chongqing University , Chongqing 400030 , P. R. China .
| | - Ding Long Hoon
- Department of Chemistry , National University of Singapore , 3 Science Drive 3 , Singapore 117543 , Singapore .
| | - Kuo-Wei Huang
- Division of Physical Sciences and Engineering , KAUST Catalysis Center , King Abdullah University of Science and Technology , Thuwal 23955-6900 , Saudi Arabia
| | - Yu Lan
- School of Chemistry and Chemical Engineering , Chongqing University , Chongqing 400030 , P. R. China .
| | - Yixin Lu
- Department of Chemistry , National University of Singapore , 3 Science Drive 3 , Singapore 117543 , Singapore .
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4
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‘Syn-effect’ in the diastereoselective alkylation of 3-[(E)-α,β-unsaturated-γ-substituted]-N-acyloxazolidinones. Tetrahedron 2015. [DOI: 10.1016/j.tet.2015.05.037] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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5
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Kaur D, Sharma R. Insight into the acidic behavior of oxazolidin-2-one, its thione and selone analogs through computational techniques. Struct Chem 2013. [DOI: 10.1007/s11224-013-0382-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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6
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Munive L, Dzakuma SA, Olivo HF. Stereochemical control on the Michael addition of chiral 1,3-oxazolidine-2-thiones to N-crotonyl 1,3-oxazolidin-2-ones. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2012.12.074] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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7
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Cano I, Gómez-Bengoa E, Landa A, Maestro M, Mielgo A, Olaizola I, Oiarbide M, Palomo C. N-(Diazoacetyl)oxazolidin-2-thiones as Sulfur-Donor Reagents: Asymmetric Synthesis of Thiiranes from Aldehydes. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201204771] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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8
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Cano I, Gómez-Bengoa E, Landa A, Maestro M, Mielgo A, Olaizola I, Oiarbide M, Palomo C. N-(Diazoacetyl)oxazolidin-2-thiones as Sulfur-Donor Reagents: Asymmetric Synthesis of Thiiranes from Aldehydes. Angew Chem Int Ed Engl 2012; 51:10856-60. [DOI: 10.1002/anie.201204771] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2012] [Indexed: 11/12/2022]
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9
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Jiménez J, Meza-León RL, Sartillo-Piscil F, Meléndez FJ, Sansinenea E, Ortiz A. Diastereoselective alkylations of oxazolidinone vinylogous glycolates. Tetrahedron Lett 2012. [DOI: 10.1016/j.tetlet.2012.06.133] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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10
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Munive L, Rivas VM, Ortiz A, Olivo HF. Oxazolidine-2-thiones and Thiazolidine-2-thiones as Nucleophiles in Intermolecular Michael Additions. Org Lett 2012; 14:3514-7. [DOI: 10.1021/ol301489y] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Laura Munive
- Division of Medicinal and Natural Products Chemistry, The University of Iowa, Iowa City, Iowa 52242, United States, and Facultad de Ciencias Químicas, Benemérita Universidad Autónoma de Puebla, Puebla 72570, Mexico
| | - Veronica M. Rivas
- Division of Medicinal and Natural Products Chemistry, The University of Iowa, Iowa City, Iowa 52242, United States, and Facultad de Ciencias Químicas, Benemérita Universidad Autónoma de Puebla, Puebla 72570, Mexico
| | - Aurelio Ortiz
- Division of Medicinal and Natural Products Chemistry, The University of Iowa, Iowa City, Iowa 52242, United States, and Facultad de Ciencias Químicas, Benemérita Universidad Autónoma de Puebla, Puebla 72570, Mexico
| | - Horacio F. Olivo
- Division of Medicinal and Natural Products Chemistry, The University of Iowa, Iowa City, Iowa 52242, United States, and Facultad de Ciencias Químicas, Benemérita Universidad Autónoma de Puebla, Puebla 72570, Mexico
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Sabala R, Hernández-García L, Ortiz A, Romero M, Olivo HF. Diastereoselective Conjugate Addition of Organocuprates to Chiral N-Enoyl Oxazolidinethiones. Org Lett 2010; 12:4268-70. [DOI: 10.1021/ol101687e] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Rocío Sabala
- Facultad de Ciencias Químicas, Benemérita Universidad Autónoma de Puebla, Pue. 72570, Mexico, and Division of Medicinal and Natural Products Chemistry, The University of Iowa, Iowa City, Iowa 52242
| | - Luis Hernández-García
- Facultad de Ciencias Químicas, Benemérita Universidad Autónoma de Puebla, Pue. 72570, Mexico, and Division of Medicinal and Natural Products Chemistry, The University of Iowa, Iowa City, Iowa 52242
| | - Aurelio Ortiz
- Facultad de Ciencias Químicas, Benemérita Universidad Autónoma de Puebla, Pue. 72570, Mexico, and Division of Medicinal and Natural Products Chemistry, The University of Iowa, Iowa City, Iowa 52242
| | - Moisés Romero
- Facultad de Ciencias Químicas, Benemérita Universidad Autónoma de Puebla, Pue. 72570, Mexico, and Division of Medicinal and Natural Products Chemistry, The University of Iowa, Iowa City, Iowa 52242
| | - Horacio F. Olivo
- Facultad de Ciencias Químicas, Benemérita Universidad Autónoma de Puebla, Pue. 72570, Mexico, and Division of Medicinal and Natural Products Chemistry, The University of Iowa, Iowa City, Iowa 52242
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12
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Rearrangement of oxazolidinethiones to thiazolidinediones or thiazinanediones and their application for the synthesis of chiral allylic ureas and α-methyl-β-amino acids. Tetrahedron 2010. [DOI: 10.1016/j.tet.2009.11.035] [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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13
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Singh J, Zeller W, Zhou N, Hategen G, Mishra R, Polozov A, Yu P, Onua E, Zhang J, Zembower D, Kiselyov A, Ramírez JL, Sigthorsson G, Bjornsson JM, Thorsteinsdottir M, Andrésson T, Bjarnadottir M, Magnusson O, Fabre JE, Stefansson K, Gurney ME. Antagonists of the EP3 receptor for prostaglandin E2 are novel antiplatelet agents that do not prolong bleeding. ACS Chem Biol 2009; 4:115-26. [PMID: 19193156 DOI: 10.1021/cb8002094] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Myocardial infarction and stroke are caused by blood clots forming over a ruptured or denuded atherosclerotic plaque (atherothrombosis). Production of prostaglandin E(2) (PGE(2)) by an inflamed plaque exacerbates atherothrombosis and may limit the effectiveness of current therapeutics. Platelets express multiple G-protein coupled receptors, including receptors for ADP and PGE(2). ADP can mobilize Ca(2+) and through the P(2)Y(12) receptor can inhibit cAMP production, causing platelet activation and aggregation. Clopidogrel (Plavix), a selective P(2)Y(12) antagonist, prevents platelets from clotting but thereby increases the risk of severe or fatal bleeding. The platelet EP(3) receptor for PGE(2), like the P(2)Y(12) receptor, also inhibits cAMP synthesis. However, unlike ADP, facilitation of platelet aggregation via the PGE(2)/EP(3) pathway is dependent on co-agonists that can mobilize Ca(2+). We used a ligand-based design strategy to develop peri-substituted bicylic acylsulfonamides as potent and selective EP(3) antagonists. We show that DG-041, a selective EP(3) antagonist, inhibits PGE(2) facilitation of platelet aggregation in vitro and ex vivo. PGE(2) can resensitize platelets to agonist even when the P(2)Y(12) receptor has been blocked by clopidogrel, and this can be inhibited by DG-041. Unlike clopidogrel, DG-041 does not affect bleeding time in rats, nor is bleeding time further increased when DG-041 is co-administered with clopidogrel. This indicates that EP(3) antagonists potentially have a superior safety profile compared to P(2)Y(12) antagonists and represent a novel class of antiplatelet agents.
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Affiliation(s)
- Jasbir Singh
- deCODE Chemistry, 2501 Davey Road, Woodridge, Illinois 60517
| | - Wayne Zeller
- deCODE Chemistry, 2501 Davey Road, Woodridge, Illinois 60517
| | - Nian Zhou
- deCODE Chemistry, 2501 Davey Road, Woodridge, Illinois 60517
| | | | - Rama Mishra
- deCODE Chemistry, 2501 Davey Road, Woodridge, Illinois 60517
| | - Alex Polozov
- deCODE Chemistry, 2501 Davey Road, Woodridge, Illinois 60517
| | - Peng Yu
- deCODE Chemistry, 2501 Davey Road, Woodridge, Illinois 60517
| | - Emmanuel Onua
- deCODE Chemistry, 2501 Davey Road, Woodridge, Illinois 60517
| | - Jun Zhang
- deCODE Chemistry, 2501 Davey Road, Woodridge, Illinois 60517
| | - David Zembower
- deCODE Chemistry, 2501 Davey Road, Woodridge, Illinois 60517
| | - Alex Kiselyov
- deCODE Chemistry, 2501 Davey Road, Woodridge, Illinois 60517
| | | | | | | | | | | | | | | | - Jean-Etienne Fabre
- Institut de Génétique et de Biologie Moléculaire et Cellulaire, Institut National de la Santé et de la Recherche Médicale U596, Centre National de la Recherche Scientifique UMR7104, Université Louis Pasteur, 67400 Illkirch, France
| | | | - Mark E. Gurney
- deCODE Chemistry, 2501 Davey Road, Woodridge, Illinois 60517
- deCODE Genetics, Sturlugata 8, IS-101 Reykjavik, Iceland
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Liu Y, Sun B, Wang B, Wakem M, Deng L. Catalytic asymmetric conjugate addition of simple alkyl thiols to alpha,beta-unsaturated N-acylated oxazolidin-2-ones with bifunctional catalysts. J Am Chem Soc 2009; 131:418-9. [PMID: 19113850 PMCID: PMC2730660 DOI: 10.1021/ja8085092] [Citation(s) in RCA: 167] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
In this communication, we describe an unprecedented highly enantioselective catalytic conjugate addition of simple alkyl thiols to alpha,beta-unsaturated N-acylated oxazolidin-2-ones catalyzed by acid-base bifunctional catalysis. This reaction provides a useful catalytic method for the synthesis of optically active chiral sulfur compounds that are otherwise difficult to prepare by asymmetric catalysis. The successful development of this reaction resulted from a discovery that, upon proper modification, a cinchona alkaloid bearing a thiourea functionality at 6' position can afford highly efficient catalysis for asymmetric conjugate additions.
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Affiliation(s)
- Yan Liu
- Department of Chemistry, Brandeis University, Waltham, Massachusetts 02454-9110
| | - Bingfeng Sun
- Department of Chemistry, Brandeis University, Waltham, Massachusetts 02454-9110
| | - Baomin Wang
- Department of Chemistry, Brandeis University, Waltham, Massachusetts 02454-9110
| | - Matthew Wakem
- Department of Chemistry, Brandeis University, Waltham, Massachusetts 02454-9110
| | - Li Deng
- Department of Chemistry, Brandeis University, Waltham, Massachusetts 02454-9110
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Benoit D, Coulbeck E, Eames J, Motevalli M. On the structure and chiroptical properties of (S)-4-isopropyl-oxazolidin-2-one. ACTA ACUST UNITED AC 2008. [DOI: 10.1016/j.tetasy.2008.03.032] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Affiliation(s)
- Aurelio Ortiz
- a Centro de investigacíon de la Facultad de Ciencias Químicas de la Benemérita, Universidad Autónoma de Puebla , Puebla Pue., 72570, Mexico
| | - Estibaliz Sansinenea
- b Instituto de Ciencias de la Benemérita, Universidad Autónoma de Puebla , Puebla Pue., 72570, Mexico
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Palomo C, Oiarbide M, López R, González PB, Gómez-Bengoa E, Saá JM, Linden A. Intramolecular Sulfur Transfer in N-Enoyl Oxazolidine-2-thiones Promoted by Brønsted Acids. Practical Asymmetric Synthesis of β-Mercapto Carboxylic Acids and Mechanistic Insights. J Am Chem Soc 2006; 128:15236-47. [PMID: 17117876 DOI: 10.1021/ja0654027] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The ability of Brønsted acids alone to efficiently promote the sulfur transfer process in N-enoyl oxazolidine-2-thiones to give beta-mercapto carbonyl derivatives is demonstrated. The reactions proceed with essentially perfect diastereocontrol for a range of alkyl-substituted N-enoyl oxazolidine-2-thiones (d.r. regularly above 98:2) and high selectivity for most aryl-substituted counterparts (d.r. typically above 92:8). Importantly, the reaction works remarkably well in beta,beta-disubstituted N-enoyl oxazolidine-2-thiones as well, giving rise to quaternary C-S stereocenters in selectivities usually above 95:5. The relative efficiency of a range of acids (trifluoroacetic, difluoroacetic, acetic, triflic) is assessed showing TFA and TfOH as the most efficient and acetic acid as a totally inefficient reaction promoter. The new procedure complements the Lewis acid promoted reaction previously described by our group in two aspects: First, stereodivergent results are obtained for the Lewis acid or Brønsted acid promoted reactions of beta,beta-disubstituted enoyl compounds. Second, while the Brønsted acid promoted reactions are stereospecific, providing a good correlation between the substrate E/Z configuration and products stereochemistry, the reactions mediated by Lewis acids (BF3/OEt2) provide invariant d.r. values regardless of the E/Z composition of the starting olefin. The synthetic value of the method is illustrated by (a) removal of the oxazolidinone moiety from the rearranged products under reducing conditions (NaBH4, H2O-THF) which yields beta-mercapto alcohols and (b) treatment with Sm(OTf)3 in MeOH which affords the corresponding beta-mercapto carboxylic esters, both categories of compounds being isolated in up to 97% ee. Remarkably, the method constitutes the first general approach to highly enantioenriched building blocks bearing a quaternary C-S stereocenter. On the other hand, spectroscopic and inhibition experiments are carried out that demonstrate the participation of protons also in the Lewis acid promoted reactions. Finally, the computational studies carried out at the B3LYP/6-31G* level give support for an activation of the substrate enoyl by complexation with two molecules of either the Brønsted or Lewis acid and serve to explain the stereochemical outcome of the reactions.
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Affiliation(s)
- Claudio Palomo
- Departamento de Química OrgAnica I, Facultad de Química, Universidad del País Vasco, Apdo. 1072, 20080 San Sebastián, Spain.
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Kinoshita H, Osamura T, Mizuno K, Kinoshita S, Iwamura T, Watanabe SI, Kataoka T, Muraoka O, Tanabe G. Asymmetric Tandem Michael-Aldol Reactions between 3-Cinnamoyloxazolidine-2-thiones and Aldehydes. Chemistry 2006; 12:3896-904. [PMID: 16509002 DOI: 10.1002/chem.200501435] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Reactions between chiral 3-cinnamoyl-4-methyl-5-phenyl-1,3-oxazolidine-2-thiones and aromatic aldehydes in the presence of BF3Et2O diastereoselectively produced tricyclic compounds incorporating a bridgehead carbon bound to four heteroatoms in high yields. Four stereocenters were induced during the reaction. The tricyclic products were transformed into propane-1,3-diols bearing three consecutive stereocenters by acid hydrolysis, S-methylation, and reductive removal of the chiral auxiliary.
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Affiliation(s)
- Hironori Kinoshita
- Gifu Pharmaceutical University, 6-1 Mitahora-higashi 5-chome, Gifu 502-8585, Japan
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Hernández H, Bernès S, Quintero L, Sansinenea E, Ortiz A. Novel rearrangement of N-enoyl oxazolidinethiones to N-substituted 1,3-thiazine-2,4-diones promoted by NbCl5. Tetrahedron Lett 2006. [DOI: 10.1016/j.tetlet.2005.12.019] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Mendoza G, Hernández H, Quintero L, Sosa-Rivadeneyra M, Bernès S, Sansinenea E, Ortiz A. Synthesis of N-substituted 2,4-thiazolidinediones from oxazolidinethiones. Tetrahedron Lett 2005. [DOI: 10.1016/j.tetlet.2005.09.116] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Kinoshita H, Takahashi N, Iwamura T, Watanabe SI, Kataoka T, Muraoka O, Tanabe G. Synthesis of 3-sulfanylpropanols containing three consecutive stereocenters via tandem Michael–aldol reaction of enoylthioamides with acetals as key reaction. Tetrahedron Lett 2005. [DOI: 10.1016/j.tetlet.2005.08.085] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Ortiz A, Hernández H, Mendoza G, Quintero L, Bernès S. Asymmetric synthesis of 3-methylthio alcohols by intramolecular Michael addition reactions. Tetrahedron Lett 2005. [DOI: 10.1016/j.tetlet.2005.02.021] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Chuang CH, Lien MH. Ab Initio Study on the Effects of the Substituent and the Functional Group on the Isomerization of H3CC(X)Y and H2C(X)CHY (Y = SiH2, PH, S; X = H, CH3, NH2, OH, F). J Phys Chem A 2004. [DOI: 10.1021/jp0371332] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Chi-Hsiang Chuang
- Department of Chemistry, National Chung Hsing University, Taichung 402, Taiwan, Republic of China
| | - Min-Hsiung Lien
- Department of Chemistry, National Chung Hsing University, Taichung 402, Taiwan, Republic of China
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Ortiz A, Quintero L, Mendoza G, Bernès S. A novel nucleophilic attack to N-enoyl oxazolidinethiones. Tetrahedron Lett 2003. [DOI: 10.1016/s0040-4039(03)01189-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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25
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Ortiz A, Quintero L, Hernández H, Maldonado S, Mendoza G, Bernès S. (S)-4-Isopropyl-5,5-dimethyl-1,3-oxazolidinethione as chiral auxiliary for the intramolecular sulfur transfer in α,β-unsaturated N-acylimides, promoted by NbCl5. Tetrahedron Lett 2003. [DOI: 10.1016/s0040-4039(02)02837-x] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Nishide K, Shiraki H, Tamakita H, Node M. Use of odorless thiols: formal asymmetric Michael addition of hydrogen sulfide to alpha-substituted alpha,beta-unsaturated carbonyl compounds. Org Lett 2001; 3:3121-4. [PMID: 11574010 DOI: 10.1021/ol016406d] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
[reaction: see text] The Michael addition to alpha-substituted alpha,beta-unsaturated esters and amides using complex A containing a chiral odorless thiol proceeded diastereoselectively. The Michael adducts were converted to beta-mercapto esters and amides via a Wagner-Meerwein rearrangement with boron trifluoride etherate and a thiol exchange reaction using odorless 1-dodecanethiol. This conversion constitutes a formal asymmetric Michael addition of hydrogen sulfide to alpha,beta-unsaturated carbonyl compounds using odorless thiols instead of the toxic hydrogen sulfide.
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Affiliation(s)
- K Nishide
- Department of Pharmaceutical Manufacturing Chemistry, Kyoto Pharmaceutical University, Misasagi, Yamashina, Kyoto 607-8414, Japan
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