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Yu KM, Zhu HK, Zhao XL, Shi M, Zhao MX. Organocatalyzed asymmetric tandem conjugate addition–protonation of isocyanoacetates to 2-chloroacrylonitrile. Org Biomol Chem 2019; 17:639-645. [DOI: 10.1039/c8ob02833h] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Dihydroquinine-derived thiourea catalyzed asymmetric tandem conjugate addition–protonation of α-isocyanoacetates to 2-chloroacrylonitrile was developed.
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Affiliation(s)
- Kun-Ming Yu
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals
- School of Chemistry and Molecular Engineering
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Hui-Kai Zhu
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals
- School of Chemistry and Molecular Engineering
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Xiao-Li Zhao
- Department of Chemistry
- East China Normal University
- Shanghai
- China
| | - Min Shi
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals
- School of Chemistry and Molecular Engineering
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Mei-Xin Zhao
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals
- School of Chemistry and Molecular Engineering
- East China University of Science and Technology
- Shanghai 200237
- China
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2
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Abstract
Since the discovery of the Mukaiyama aldol reaction more than 40 years ago, several landmark publications have inspired researchers in the field. The Mukaiyama AR is one of the most significant named reactions in organic synthesis. In the past few decades, development of the modern AR has been at the forefront in addressing the challenges of regio-, chemo-, diastereo-, and enantioselectivity in organic synthesis. All of these selectivity challenges maybe present in a single pair of reactants, thus controlling the outcome of such a process has great practical value. More than 10 years ago, our group became involved in this iconic carbon-carbon bond-forming process and attempted to very closely investigate all possible features of the AR to solve several issues still encountered by chemists, most notably the selectivity challenges mentioned above. In this context, our group initiated the second generation of the AR based on a Lewis or Brønsted acid-catalyzed process in conjunction with the use of a "super silyl" (tris(trimethylsilyl)silyl) directing group, which has demonstrated unrivalled properties in controlling the outcome of the AR. Using the extraordinary power of the super silyl group, we were able to develop new methods and concepts that broadly impacted the ability to control the selectivity attributes and thus allowed for a highly stereoselective construction of polyketide, halogenated polyketide, polypropionate, and polyol scaffolds through inter- and/or intramolecular aldolization protocols. Our diastereoselective ARs of super silyl enol ethers and aldehydes have shown great efficiency and modularity in producing exclusively and preferentially syn- or anti-adducts, creating up to four new adjacent stereocenters in a one-pot sequential manner and under mild reaction conditions. The super silyl-directed AR does not only provide a solution to stereochemistry control challenges, but also offers an efficient, modular and high yielding technique toward nontrivial construction of complex architectures with unprecedented ease. We believe that the new Lewis- or Brønsted-acid-catalyzed super-silyl-directed AR processes chronicled in our laboratories have come to maturity and now offer a "road map" for strategic stereoselective synthesis of polyketide-like units. Herein we report our recent achievements in the diastereoselective C-C bond formation, through the super-silyl-directed AR, toward the synthesis of complex and sophisticated hydroxy aldehydes. We would like to note that due to the extremely broad range of work reported in this field, only stereoselective AR involving aldehyde-derived super SEEs will be discussed in this Account.
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Affiliation(s)
- Wafa Gati
- Molecular Catalyst Research
Center, Chubu University, 1200 Matsumoto, Kasugai, Aichi 487-8501, Japan
| | - Hisashi Yamamoto
- Molecular Catalyst Research
Center, Chubu University, 1200 Matsumoto, Kasugai, Aichi 487-8501, Japan
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Tandem Catalysis of an Aldol-'Click' Reaction System within a Molecular Hydrogel. Molecules 2016; 21:molecules21060744. [PMID: 27338313 PMCID: PMC6273958 DOI: 10.3390/molecules21060744] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2016] [Revised: 06/02/2016] [Accepted: 06/03/2016] [Indexed: 11/17/2022] Open
Abstract
A heterogeneous supramolecular catalytic system for multicomponent aldol-‘click’ reactions is reported. The copper(I) metallohydrogel functionalized with a phenyltriazole fragment was able to catalyze the multicomponent reaction between phenylacetylene, p-nitrobenzaldehyde, and an azide containing a ketone moiety, obtaining the corresponding aldol products in good yields. A possible mechanistic pathway responsible for this unexpected catalytic behavior has been proposed.
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Lee JS, Kim D, Kong SB, Han H. Air-Stable Bifunctional Allylation Reagents for the Asymmetric Synthesis of Differentiatedsyn- andanti-1,3-Diols. Chemistry 2013; 19:4135-9. [DOI: 10.1002/chem.201204148] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2012] [Revised: 01/04/2013] [Indexed: 11/07/2022]
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Harrison TJ, Rabbat PMA, Leighton JL. An "aprotic" Tamao oxidation/syn-selective tautomerization reaction for the efficient synthesis of the C1-C9 fragment of fludelone. Org Lett 2012; 14:4890-3. [PMID: 22950417 PMCID: PMC3466590 DOI: 10.1021/ol302221s] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
An efficient synthesis of the C(1)-C(9) fragment of fludelone has been developed. The key step is a tandem silylformylation-crotylsilylation/Tamao oxidation sequence that establishes the C(5) ketone, the C(6), C(7), and C(8) stereocenters, and the C(9) alkene in a single operation from a readily accessed starting material. The stereochemical outcome at C(6) depends critically on the development of an "aprotic" Tamao oxidation, which leads to a reversal in the intrinsic diastereoselectivity observed using "standard" Tamao oxidation conditions.
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Affiliation(s)
- Tyler J. Harrison
- Department of Chemistry, Columbia University, New York, New York 10027
| | | | - James L. Leighton
- Department of Chemistry, Columbia University, New York, New York 10027
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Li B, Zhao YJ, Lai YC, Loh TP. Asymmetric Syntheses of 8-Oxabicyclo[3,2,1]octanes: A Cationic Cascade Cyclization. Angew Chem Int Ed Engl 2012; 51:8041-5. [DOI: 10.1002/anie.201202699] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2012] [Revised: 05/24/2012] [Indexed: 11/10/2022]
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7
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Li B, Zhao YJ, Lai YC, Loh TP. Asymmetric Syntheses of 8-Oxabicyclo[3,2,1]octanes: A Cationic Cascade Cyclization. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201202699] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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8
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Zhou Y, Ramström O, Dong H. Organosilicon-mediated regioselective acetylation of carbohydrates. Chem Commun (Camb) 2012; 48:5370-2. [DOI: 10.1039/c2cc31556d] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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9
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Albert BJ, Yamaoka Y, Yamamoto H. Rapid total syntheses utilizing "supersilyl" chemistry. Angew Chem Int Ed Engl 2011; 50:2610-2. [PMID: 21370348 PMCID: PMC3086072 DOI: 10.1002/anie.201007210] [Citation(s) in RCA: 72] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2010] [Indexed: 11/12/2022]
Affiliation(s)
- Brian J. Albert
- Department of Chemistry, The University of Chicago, 5735 S Ellis Avenue, Chicago, IL 60637 (USA)
| | - Yousuke Yamaoka
- Department of Chemistry, The University of Chicago, 5735 S Ellis Avenue, Chicago, IL 60637 (USA)
| | - Hisashi Yamamoto
- Department of Chemistry, The University of Chicago, 5735 S Ellis Avenue, Chicago, IL 60637 (USA)
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10
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Albert BJ, Yamaoka Y, Yamamoto H. Rapid Total Syntheses Utilizing “Supersilyl” Chemistry. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201007210] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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11
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Zhao F, Zhang S, Xi Z. Silyl-substituted 1,3-butadienes for Diels–Alder reaction, ene reaction and allylation reaction. Chem Commun (Camb) 2011; 47:4348-57. [DOI: 10.1039/c0cc05665k] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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12
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Gao J, Bai S, Gao Q, Liu Y, Yang Q. Acid controlled diastereoselectivity in asymmetric aldol reaction of cycloketones with aldehydes using enamine-based organocatalysts. Chem Commun (Camb) 2011; 47:6716-8. [DOI: 10.1039/c0cc05224h] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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13
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Li D, Cao Y, Shi A, Xi Z. Facile One-Pot Construction of Polycyclic Frameworks using a Synergistic Diels-Alder Reaction, Ene Reaction, and Allylation Reaction Strategy. Chem Asian J 2010; 6:392-5. [DOI: 10.1002/asia.201000257] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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14
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Albert BJ, Yamamoto H. A triple-aldol cascade reaction for the rapid assembly of polyketides. Angew Chem Int Ed Engl 2010; 49:2747-9. [PMID: 20229553 DOI: 10.1002/anie.200907076] [Citation(s) in RCA: 84] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Brian J Albert
- Department of Chemistry, The University of Chicago, 5735 South Ellis Avenue, Chicago, IL 60635, USA
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Albert B, Yamamoto H. A Triple-Aldol Cascade Reaction for the Rapid Assembly of Polyketides. Angew Chem Int Ed Engl 2010. [DOI: 10.1002/ange.200907076] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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16
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Mukherjee S, Kontokosta D, Patil A, Rallapalli S, Lee D. Improved method for the synthesis of beta-carbonyl silyl-1,3-dithianes by the double conjugate addition of 1,3-dithiol to propargylic carbonyl compounds. J Org Chem 2010; 74:9206-9. [PMID: 19877611 DOI: 10.1021/jo901950e] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Base-mediated double conjugate addition of 1,3-propane dithiol to various silylated propargylic aldehydes and ketones allows for an efficient and scalable synthesis of beta-carbonyl silyl-1,3-dithianes.
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Affiliation(s)
- Sumit Mukherjee
- Department of Chemistry, University of Illinois at Chicago, 845 West Taylor Street, Chicago, Illinois 60607, USA
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Tsubouchi A, Matsuda H, Kira T, Takeda T. Silyl Migration in Conjunction with Substitution on Silicon in Copper(I)t-Butoxide-promoted Coupling betweeno-Silylphenyl Ketones and Organic Halides. CHEM LETT 2009. [DOI: 10.1246/cl.2009.1180] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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18
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Ogawa S, Yasui H, Tokunaga E, Nakamura S, Shibata N. Construction of Nonadjacent Stereocenters Containing a Trifluoromethylated Carbon by Organocatalyzed Michael Addition of β-Ketoesters to 2-(Trifluoromethyl)acrylate. CHEM LETT 2009. [DOI: 10.1246/cl.2009.1006] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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19
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Abstract
Lanthanide triisopropoxides catalyze a rapid, tandem MPV reduction/Brook rearrangement/aldol sequence between silyl glyoxylates and aldehydes that achieves catalytic turnover through alkoxide transfer from a strain-release Lewis acidic silacycle.
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Affiliation(s)
- Stephen N. Greszler
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-3290
| | - Jeffrey S. Johnson
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-3290
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20
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Abstract
The trans-selective hydrosilylation of ynones (1) yields beta-silylated enones (2) that undergo a benzylic 1,4-rearrangement/cyclization reaction in the presence of base, yielding 2,5-dihydro-1,2-oxasiloles (3).
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Affiliation(s)
- Barry M Trost
- Department of Chemistry, Stanford University, Stanford, California 94305-5080, USA
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Boxer MB, Yamamoto H. “Super Silyl” Group for Diastereoselective Sequential Reactions: Access to Complex Chiral Architecture in One Pot. J Am Chem Soc 2007; 129:2762-3. [PMID: 17309266 DOI: 10.1021/ja0693542] [Citation(s) in RCA: 105] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Matthew B Boxer
- Department of Chemistry, The University of Chicago, 5735 South Ellis Avenue, Chicago, Illinois 60637, USA
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