301
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García GV, Nudelman NS. TANDEM REACTIONS INVOLVING ORGANOLITHIUM REAGENTS. A REVIEW. ORG PREP PROCED INT 2003. [DOI: 10.1080/00304940309355860] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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302
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Affiliation(s)
- Maurizio Benaglia
- Dipartimento di Chimica Organica e Industriale, CNR-ISTM, and Centro di Eccellenza CISI, Via Golgi 19, I-20133 Milano, Italy.
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303
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France S, Guerin DJ, Miller SJ, Lectka T. Nucleophilic chiral amines as catalysts in asymmetric synthesis. Chem Rev 2003; 103:2985-3012. [PMID: 12914489 DOI: 10.1021/cr020061a] [Citation(s) in RCA: 402] [Impact Index Per Article: 19.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Stefan France
- Department of Chemistry, Johns Hopkins University, 3400 North Charles Street, Baltimore, MD 21218, USA
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304
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Shi M, Xu YM. An unexpected highly stereoselective double aza-Baylis-Hillman reaction of sulfonated imines with phenyl vinyl ketone. J Org Chem 2003; 68:4784-90. [PMID: 12790582 DOI: 10.1021/jo034114f] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The aza-Baylis-Hillman reaction of N-sulfonated imine with phenyl vinyl ketone gave the double aza-Baylis-Hillman adduct in good yields with excellent stereoselectivities in the presence of Lewis base 1,4-diazabicyclo[2.2.2]octane.
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Affiliation(s)
- Min Shi
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Science, 354 Fenglin Lu, Shanghai 200032, China.
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305
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Shi M, Chen LH. Chiral phosphine Lewis base catalyzed asymmetric aza-Baylis-Hillman reaction of N-sulfonated imines with methyl vinyl ketone and phenyl acrylate. Chem Commun (Camb) 2003:1310-1. [PMID: 12809245 DOI: 10.1039/b301863f] [Citation(s) in RCA: 162] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In the aza-Baylis-Hillman reaction of N-sulfonated imines with methyl vinyl ketone (MVK) promoted by chiral phosphine Lewis base: (R)-2'-diphenylphosphanyl-[1,1']binaphthalenyl-2-ol (10 mol%), the aza-Baylis-Hillman adducts 1 were obtained in good yields with high ee (70-94% ee) at -30 degrees C in THF. In CH2Cl2 upon heating at 40 degrees C, the aza-Baylis-Hillman reaction of N-sulfonated imines with phenyl acrylate gave the adducts 2 in high yields (60-97%) with moderate ee (52-77%).
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Affiliation(s)
- Min Shi
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 354 Fenglin Lu, Shanghai 200032, China.
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306
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307
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Basavaiah D, Rao AJ, Satyanarayana T. Recent advances in the Baylis-Hillman reaction and applications. Chem Rev 2003; 103:811-92. [PMID: 12630854 DOI: 10.1021/cr010043d] [Citation(s) in RCA: 1366] [Impact Index Per Article: 65.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Deevi Basavaiah
- School of Chemistry, University of Hyderabad, Hyderabad, 500 046 India
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308
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Balan D, Adolfsson H. Chiral quinuclidine-based amine catalysts for the asymmetric one-pot, three-component aza-Baylis–Hillman reaction. Tetrahedron Lett 2003. [DOI: 10.1016/s0040-4039(03)00289-2] [Citation(s) in RCA: 127] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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309
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Yang KS, Lee WD, Pan JF, Chen K. Chiral Lewis acid-catalyzed asymmetric Baylis-Hillman reactions. J Org Chem 2003; 68:915-9. [PMID: 12558416 DOI: 10.1021/jo026318m] [Citation(s) in RCA: 94] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
An effective chiral Lewis acid-catalyzed asymmetric Baylis-Hillman reaction is described. Good to high enantioselectivities were obtained using 3 mol % chiral catalyst. Novel camphor-derived dimerized ligands were prepared from the condensation of (+)-ketopinic acid with the corresponding diamines and hydrazine under acidic conditions. When alpha-naphthyl acrylate was used as a Michael acceptor, the reaction is complete within 20 min with high stereoselectivity and in reasonable chemical yields.
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Affiliation(s)
- Kung-Shuo Yang
- Department of Chemistry, National Taiwan Normal University, Taipei, Taiwan 116, ROC
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310
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Synthesis of 2,3,4,4a-Tetrahydroxanthen-1-ones and 3,3a-Dihydro-2H-cyclopenta[b]chromen-1-ones from the Reaction of Salicylaldehydes and 2-Cyclohexen-1-one and 2-Cyclopenten-1-one. B KOREAN CHEM SOC 2003. [DOI: 10.5012/bkcs.2003.24.1.017] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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311
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Synthesis of 3-substituted-4-hydroxyquinoline N-oxides from the Baylis–Hillman adducts of o-nitrobenzaldehydes. Tetrahedron 2003. [DOI: 10.1016/s0040-4020(02)01518-1] [Citation(s) in RCA: 60] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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312
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Cai J, Zhou Z, Zhao G, Tang C. Dramatic rate acceleration of the Baylis-Hillman reaction in homogeneous medium in the presence of water. Org Lett 2002; 4:4723-5. [PMID: 12489971 DOI: 10.1021/ol027197f] [Citation(s) in RCA: 147] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
[reaction: see text] In homogeneous H(2)O/solvent medium, the reaction rate of aromatic aldehydes and acrylonitrile or acrylate was greatly accelerated, which led to shorter reaction time, lower reaction temperature, and higher yield. In this reaction, Me(3)N, DMAP, DABCO, and urotropine were good catalysts. Except for low-carbon alcohols, tetrahydrofuran, 1,4-dioxane, and acetonitrile could be chosen as the solvent. Under this condition, the diastereoselective reaction of nitrobenzaldehyde and L-menthyl acrylate was realized with 88-99% de.
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Affiliation(s)
- Juexiao Cai
- State Key Laboratory of Elemento-Organic Chemistry, Institute of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, People's Republic of China
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313
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Kim JN, Lee HJ, Gong JH. Synthesis of enantiomerically enriched Baylis–Hillman alcohols from their acetates: combination of kinetic resolution during the salt formation with (DHQD)2PHAL and following asymmetric induction during hydrolysis with NaHCO3 as a water surrogate. Tetrahedron Lett 2002. [DOI: 10.1016/s0040-4039(02)02274-8] [Citation(s) in RCA: 74] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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314
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Baylis-Hillman Reaction of Isatin Derivatives: Isatins as a New Entry for the Baylis-Hillman Reaction. B KOREAN CHEM SOC 2002. [DOI: 10.5012/bkcs.2002.23.11.1651] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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315
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Luo S, Zhang B, He J, Janczuk A, Wang PG, Cheng JP. Aqueous Baylis–Hillman reactions of cyclopent-2-enone using imidazole as catalyst. Tetrahedron Lett 2002. [DOI: 10.1016/s0040-4039(02)01716-1] [Citation(s) in RCA: 69] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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316
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Grainger RS, Leadbeater NE, Masdéu Pàmies A. The tetramethylguanidine catalyzed Baylis–Hillman reaction: Effects of co-catalysts and alcohol solvents on reaction rate. CATAL COMMUN 2002. [DOI: 10.1016/s1566-7367(02)00178-4] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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317
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Shi M, Jiang JK. An exploration of asymmetric Baylis–Hillman reactions catalyzed by quinidine-derived chiral amines. ACTA ACUST UNITED AC 2002. [DOI: 10.1016/s0957-4166(02)00485-8] [Citation(s) in RCA: 59] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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318
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Coelho F, Almeida WP, Veronese D, Mateus CR, Silva Lopes EC, Rossi RC, Silveira GP, Pavam CH. Ultrasound in Baylis–Hillman reactions with aliphatic and aromatic aldehydes: scope and limitations. Tetrahedron 2002. [DOI: 10.1016/s0040-4020(02)00822-0] [Citation(s) in RCA: 81] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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319
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Kamimura A, Morita R, Matsuura K, Omata Y, Shirai M. Simple preparation of β-hydroxy-α-thiomethyl carbonyl compounds via stereoselective conjugate addition of thiol to Baylis–Hillman adducts. Tetrahedron Lett 2002. [DOI: 10.1016/s0040-4039(02)01318-7] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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320
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Facile Synthesis of 3-Substituted 2(1H)-Quinolinones from the Baylis-Hillman Adducts of 2-Nitrobenzaldehydes. B KOREAN CHEM SOC 2002. [DOI: 10.5012/bkcs.2002.23.7.939] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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321
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Patra A, Batra S, Joshi BS, Roy R, Kundu B, Bhaduri AP. TiCl4-Promoted Baylis−Hillman Reactions of Substituted 5-Isoxazolecarboxaldehydes with Cycloalkenones1. J Org Chem 2002; 67:5783-8. [PMID: 12153281 DOI: 10.1021/jo020199t] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The Baylis-Hillman (BH) reaction of substituted 5-isoxazolecarboxaldehydes with cyclohexenone in the presence of TiCl(4) invariably lead to the formation of hemiacetals beside the BH adducts. A similar reaction in the presence of DABCO, DBU, or 3-HQN yielded minor quantities of phenols in addition to the usual BH adducts. Similar to 5-isoxazolecarboxaldehydes, the TiCl(4)-mediated BH reaction of cyclohexenone with various benzaldehydes also furnishes hemiacetals in considerable yields. The reaction mechanism involving the formation of alpha-chloromethyl enone as an intermediate has been proposed. The synthesis of hemiacetals 5 and 14 from compound 4 in the presence of cyclohexenone and cyclopentenone, respectively, under acidic conditions indicates that enolization and aromatization of the cyclohexene ring are the key steps in the reaction mechanism.
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Affiliation(s)
- Arundhati Patra
- Medicinal ChemistryDivision, Central Drug Research Institute, Lucknow 226 001, India
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322
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The Most Simple and Convenient Synthesis of the Baylis-Hillman Adducts of Cycloalkenones:Use of DMAP in Aqueous THF. B KOREAN CHEM SOC 2002. [DOI: 10.5012/bkcs.2002.23.5.659] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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323
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Fang YY, Liu H, Du M, Guo YM, Bu XH. [M(L)2(NCS)2(H2O)2] (M=MnII or CoII and L=2,5-bis(4-pyridyl)-1,3,4-oxadiazole): three-dimensional extended networks built from hydrogen bonds and π–π stacking interaction—syntheses and crystal structures. J Mol Struct 2002. [DOI: 10.1016/s0022-2860(01)00955-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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324
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Frank SA, Mergott DJ, Roush WR. The vinylogous intramolecular Morita-Baylis-Hillman reaction: synthesis of functionalized cyclopentenes and cyclohexenes with trialkylphosphines as nucleophilic catalysts. J Am Chem Soc 2002; 124:2404-5. [PMID: 11890766 DOI: 10.1021/ja017123j] [Citation(s) in RCA: 211] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The development of the vinylogous intramolecular Morita-Baylis-Hillman reaction for the synthesis of functionalized cyclopentenes and cyclohexenes is described. The reaction involves the trialkyphosphine-catalyzed cyclization of 1,6- or 1,7-diactivated 1,5-hexadienes or 1,6-heptadienes, containing carboxyaldehyde, methyl ketone, or methoxycarbonyl as the olefin activating groups. A representative example of this reaction is the Me(3)P-catalyzed cyclization of 1a in tert-amyl alcohol, which provides the substituted cyclopentene 2a in 95% yield and with 97:3 regioselectivity.
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Affiliation(s)
- Scott A Frank
- Department of Chemistry, University of Michigan, Ann Arbor, MI 48109-1055, USA
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325
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326
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Kataoka T, Kinoshita H, Kinoshita S, Iwamura T. The chalcogeno-Baylis–Hillman reaction of ketones and α-dicarbonyl compounds. ACTA ACUST UNITED AC 2002. [DOI: 10.1039/b207646m] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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327
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328
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Abstract
The last few years have witnessed a spectacular advancement in new catalytic methods based on metal-free organic molecules. In many cases, these small compounds give rise to extremely high enantioselectivities. Preparative advantages are notable: usually the reactions can be performed under an aerobic atmosphere with wet solvents. The catalysts are inexpensive and they are often more stable than enzymes or other bioorganic catalysts. Also, these small organic molecules can be anchored to a solid support and reused more conveniently than organometallic/bioorganic analogues, and show promising adaptability to high-throughput screening and process chemistry. Herein we focus on four different domains in which organocatalysis has made major advances: 1) The activation of the reaction based on the nucleophilic/electrophilic properties of the catalysts. This type of catalysis has much in common with conventional Lewis acid/base activation by metal complexes. 2) Transformations in which the organic catalyst forms a reactive intermediate: the chiral catalyst is consumed in the reaction and requires regeneration in a parallel catalytic cycle. 3) Phase-transfer reactions: The chiral catalyst forms a host-guest complex with the substrate and shuttles between the standard organic solvent and the second phase (i.e. a solid, aqueous, or fluorous phase in which the organic transformation takes place). 4) Molecular-cavity-accelerated asymmetric transformations: the catalyst can select between competing substrates, depending on size and structure criteria. The rate acceleration of a given reaction is similar to the Lewis acid/base activation and is the consequence of the simultaneous action of different polar functions. Herein it is shown that organocatalysis complements rather than competes with current methods. It offers something conceptually novel and opens new horizons in synthesis.
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Affiliation(s)
- Peter I. Dalko
- Laboratoire de Recherches Organiques associé au CNRS, ESCPI 10 rue Vauquelin, 75231 Paris Cedex 05 (France)
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329
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330
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Iwamura T, Fujita M, Kawakita T, Kinoshita S, Watanabe SI, Kataoka T. Dimethyl sulfide–boron trihalide-mediated reactions of α,β-unsaturated ketones with aldehydes: one-pot synthesis of Baylis–Hillman adducts and α-halomethyl enones. Tetrahedron 2001. [DOI: 10.1016/s0040-4020(01)00842-0] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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331
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Shi M, Jiang JK, Cui SC. Titanium(IV) chloride and oxy-compounds promoted Baylis–Hillman reaction. Tetrahedron 2001. [DOI: 10.1016/s0040-4020(01)00710-4] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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332
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Lawrence NJ, Crump J, McGown AT, Hadfield JA. Reaction of Baylis–Hillman products with Swern and Dess–Martin oxidants. Tetrahedron Lett 2001. [DOI: 10.1016/s0040-4039(01)00587-1] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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333
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Rosa JN, Afonso CA, Santos AG. Ionic liquids as a recyclable reaction medium for the Baylis–Hillman reaction. Tetrahedron 2001. [DOI: 10.1016/s0040-4020(01)00316-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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334
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Alcaide B, Almendros P, Aragoncillo C. Straightforward asymmetric entry to highly functionalized medium-sized rings fused to beta-lactams via chemo- and stereocontrolled divergent radical cyclization of Baylis-Hillman adducts derived from 4-oxoazetidine-2-carbaldehydes. J Org Chem 2001; 66:1612-20. [PMID: 11262104 DOI: 10.1021/jo005715z] [Citation(s) in RCA: 69] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
DABCO promoted reactions of various activated vinyl systems with optically pure 4-oxoazetidine-2-carbaldehydes 1 gave rise to Baylis-Hillman adducts 3 with excellent syn stereoselectivities, without detectable racemization. Products 3 are used for the asymmetric preparation of unusual 2-azetidinones fused to medium-sized rings via chemo- and stereocontrolled divergent radical cyclization. The formation of bicyclic beta-lactams 4-6 could be rationalized through a tandem radical Michael addition/endo cyclization or a tandem radical addition/Michael addition, depending on the electronic nature of the radical promoter.
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Affiliation(s)
- B Alcaide
- Departamento de Química Orgánica I, Facultad de Química, Universidad Complutense 28040-Madrid, Spain.
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335
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Langer P. ChemInform Abstract: New Strategies for the Development of an Asymmetric Version of the Baylis-Hillman Reaction. ACTA ACUST UNITED AC 2000. [DOI: 10.1002/chin.200047250] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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