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Pudner GL, Camp I, Scheerer JR. A Nonoxidative Sequence for the Preparation of 1,2-Diketone Derivatives Using Aldehyde and Organometallic Building Blocks. J Org Chem 2022; 87:8213-8222. [PMID: 35613467 DOI: 10.1021/acs.joc.2c00439] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
This study investigates a synthetic sequence for the preparation of 1,2-diketone products. The sequence avoids oxidative conditions and instead employs reliable transformations including the Horner-Wadsworth-Emmons and addition of Grignard reagents to N-methyl-N-methoxy (Weinreb) amide intermediates. The reaction sequence is suitable for the synthesis of nonsymmetric aliphatic and aryl substituted derivatives.
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Affiliation(s)
- Gwyneth L Pudner
- Department of Chemistry, William & Mary, P.O. Box 8795, Williamsburg, Virginia 23187, United States
| | - Isabela Camp
- Department of Chemistry, William & Mary, P.O. Box 8795, Williamsburg, Virginia 23187, United States
| | - Jonathan R Scheerer
- Department of Chemistry, William & Mary, P.O. Box 8795, Williamsburg, Virginia 23187, United States
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Murai M, Taniguchi R, Kurogi T, Shunsuke M, Takai K. Cyclization of 5-alkynones with chromium alkylidene equivalents generated in situ from gem-dichromiomethanes. Chem Commun (Camb) 2020; 56:9711-9714. [PMID: 32700694 DOI: 10.1039/d0cc03986a] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
A rare example of cyclization with 5-alkynones, which possess non-polar alkynyl and less electrophilic polar keto carbonyl groups, was demonstrated. The key to promoting carbene/alkyne metathesis followed by alkylidenation with pendant C[double bond, length as m-dash]O double bonds was the Schrock-type nucleophilic reactivity of the generated chromium carbene equivalents from readily available diiodomethanes and CrCl2 by simple heating.
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Affiliation(s)
- Masahito Murai
- Division of Applied Chemistry, Graduate School of Natural Science and Technology, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan
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Murai M, Taniguchi R, Takai K. Cyclization of 1,n-Enynes Initiated by the Addition Reaction of gem-Dichromiomethane Reagents to Alkynes. Org Lett 2020; 22:3985-3988. [DOI: 10.1021/acs.orglett.0c01304] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Masahito Murai
- Division of Applied Chemistry, Graduate School of Natural Science and Technology, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan
- Department of Chemistry, Graduate School of Science, Nagoya University, Furo, Chikusa, Nagoya 464-8602, Japan
| | - Ryuji Taniguchi
- Division of Applied Chemistry, Graduate School of Natural Science and Technology, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan
| | - Kazuhiko Takai
- Division of Applied Chemistry, Graduate School of Natural Science and Technology, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan
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Murai M, Taniguchi R, Hosokawa N, Nishida Y, Mimachi H, Oshiki T, Takai K. Structural Characterization and Unique Catalytic Performance of Silyl-Group-Substituted Geminal Dichromiomethane Complexes Stabilized with a Diamine Ligand. J Am Chem Soc 2017; 139:13184-13192. [PMID: 28814078 DOI: 10.1021/jacs.7b07487] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Stabilization by a silyl group on the methylene carbon and a diamine ligand led to the isolation of gem-dichromiomethane species. X-ray crystallography confirmed the identity of the structure of this rare example of reactive gem-dimetalloalkane species. The isolated gem-dichromiomethane complex acted as a storable silylmethylidene carbene equivalent, with reactivity that could be changed dramatically upon addition of a Lewis acid (ZnCl2) and a base (TMEDA) to promote both silylalkylidenation of polar aldehydes and silylcyclopropanation of nonpolar alkenes. Identification of a key reactive species also identified the catalytic version of these transformations and provided insights into the reaction mechanism. In contrast to Simmons-Smith cyclopropanation, the real reactive species for the current cyclopropanation was a chromiocarbene species, not a chromium carbenoid species.
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Affiliation(s)
- Masahito Murai
- Division of Applied Chemistry, Graduate School of Natural Science and Technology, and ‡Research Institute for Interdisciplinary Science, Okayama University , 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan
| | - Ryuji Taniguchi
- Division of Applied Chemistry, Graduate School of Natural Science and Technology, and ‡Research Institute for Interdisciplinary Science, Okayama University , 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan
| | - Naoki Hosokawa
- Division of Applied Chemistry, Graduate School of Natural Science and Technology, and ‡Research Institute for Interdisciplinary Science, Okayama University , 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan
| | - Yusuke Nishida
- Division of Applied Chemistry, Graduate School of Natural Science and Technology, and ‡Research Institute for Interdisciplinary Science, Okayama University , 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan
| | - Hiroko Mimachi
- Division of Applied Chemistry, Graduate School of Natural Science and Technology, and ‡Research Institute for Interdisciplinary Science, Okayama University , 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan
| | - Toshiyuki Oshiki
- Division of Applied Chemistry, Graduate School of Natural Science and Technology, and ‡Research Institute for Interdisciplinary Science, Okayama University , 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan
| | - Kazuhiko Takai
- Division of Applied Chemistry, Graduate School of Natural Science and Technology, and ‡Research Institute for Interdisciplinary Science, Okayama University , 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan
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Sugimura H, Miyazaki H, Makita Y. Lewis acid-promoted reaction of β,γ-unsaturated α,α-dimethoxy esters with silyl nucleophiles. Tetrahedron Lett 2012. [DOI: 10.1016/j.tetlet.2012.06.078] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Kashinath D, Tisserand S, Puli N, Falck JR, Baati R. Generation of Nucleophilic Chromium Acetylides from gem-Trichloroalkanes and Chromium Chloride: Synthesis of Propargyl Alcohols. European J Org Chem 2010; 2010:1869-1874. [PMID: 21562621 PMCID: PMC3090182 DOI: 10.1002/ejoc.200901476] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2009] [Indexed: 11/10/2022]
Abstract
Nucleophilic mixed chromium(II) and chromium(III) acetylides are generated from the smooth reduction of primary 1,1,1-trichloroalkanes with chromium(II) chloride in the presence of an excess amount of triethylamine at room temperature. These species arise from chromium(III) vinylidene carbenoids. It has been demonstrated that uncommon low-valent Cr(II) acetylides are formed by C-H insertion of Cr(II)Cl(2) into terminal alkynes, formed in situ through the Fritsch- Buttenberg-Wiechell (FBW) rearrangement, whereas Cr(III) acetylides are concomitantly generated by HCl elimination from the chromium(III) vinylidene carbenoid. Both divergent pathways result, overall, in the formation of nucleophilic acetylides. In situ trapping with electrophilic aldehydes afforded propargyl alcohols. Furthermore, deuteration experiments and the use of deuterium labeled 1,1,1-trichloroalkane substrates demonstrated the prevalence of low-valent Cr(II) acetylides, potentially useful, yet highly elusive synthetic intermediates.
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Affiliation(s)
- Dhurke Kashinath
- University of Strasbourg, Faculty of Pharmacy CNRS/UMR, 7199 Laboratory of Functional Chemosystems, 74, route du rhin, B. P. 60024, 67401 Illkirch, France, Fax: +33-3-68854306
| | - Steve Tisserand
- University of Strasbourg, Faculty of Pharmacy CNRS/UMR, 7199 Laboratory of Functional Chemosystems, 74, route du rhin, B. P. 60024, 67401 Illkirch, France, Fax: +33-3-68854306
| | - Narender Puli
- University of Texas Southwestern Medical Center, Department of Biochemistry, 5323 Harry Hines Blvd., Dallas, TX 75390-9038, USA, Fax: +1-214-648-6455
| | - John R. Falck
- University of Texas Southwestern Medical Center, Department of Biochemistry, 5323 Harry Hines Blvd., Dallas, TX 75390-9038, USA, Fax: +1-214-648-6455
| | - Rachid Baati
- University of Strasbourg, Faculty of Pharmacy CNRS/UMR, 7199 Laboratory of Functional Chemosystems, 74, route du rhin, B. P. 60024, 67401 Illkirch, France, Fax: +33-3-68854306
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Falck JR, Bandyopadhyay A, Puli N, Kundu A, Reddy LM, Barma DK, He A, Zhang H, Kashinath D, Baati R. Cascade synthesis of (E)-2-alkylidenecyclobutanols. Org Lett 2009; 11:4764-6. [PMID: 19761224 PMCID: PMC2764278 DOI: 10.1021/ol901985c] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A facile, one-pot reaction cascade condenses 1,1,1-trichloroalkanes with alpha,beta-unsaturated ketones to unexpectedly furnish moderate to good yields of (E)-2-alkylidenecyclobutanols.
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Affiliation(s)
- J. R. Falck
- Departments of Biochemistry and Pharmacology, University of Texas Southwestern Medical Center, Dallas, Texas 75390
| | - Anish Bandyopadhyay
- Departments of Biochemistry and Pharmacology, University of Texas Southwestern Medical Center, Dallas, Texas 75390
| | - Narender Puli
- Departments of Biochemistry and Pharmacology, University of Texas Southwestern Medical Center, Dallas, Texas 75390
| | - Abhijit Kundu
- Departments of Biochemistry and Pharmacology, University of Texas Southwestern Medical Center, Dallas, Texas 75390
| | - L. Manmohan Reddy
- Departments of Biochemistry and Pharmacology, University of Texas Southwestern Medical Center, Dallas, Texas 75390
| | - Deb K. Barma
- Departments of Biochemistry and Pharmacology, University of Texas Southwestern Medical Center, Dallas, Texas 75390
| | - Anyu He
- Departments of Biochemistry and Pharmacology, University of Texas Southwestern Medical Center, Dallas, Texas 75390
| | - Hongming Zhang
- Department of Chemistry, Southern Methodist University, Dallas Texas 75275 USA
| | - Dhurke Kashinath
- University of Strasbourg, Faculty of Pharmacy CNRS-UMR 7199, 74 Route du Rhin, 67401 Illkirch, France
| | - Rachid Baati
- University of Strasbourg, Faculty of Pharmacy CNRS-UMR 7199, 74 Route du Rhin, 67401 Illkirch, France
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Lemonnier G, Zoute L, Dupas G, Quirion JC, Jubault P. Diethylzinc-Mediated One-Step Stereoselective Synthesis of α-Fluoroacrylates from Aldehydes and Ketones. Two Different Pathways Depending on the Carbonyl Partner. J Org Chem 2009; 74:4124-31. [DOI: 10.1021/jo900422m] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- G. Lemonnier
- INSA de Rouen et Université de Rouen, CNRS UMR 6014 C.O.B.R.A & FR 3038, IRCOF, 1 rue Tesnière, 76821 Mont-Saint-Aignan Cedex, France
| | - L. Zoute
- INSA de Rouen et Université de Rouen, CNRS UMR 6014 C.O.B.R.A & FR 3038, IRCOF, 1 rue Tesnière, 76821 Mont-Saint-Aignan Cedex, France
| | - G. Dupas
- INSA de Rouen et Université de Rouen, CNRS UMR 6014 C.O.B.R.A & FR 3038, IRCOF, 1 rue Tesnière, 76821 Mont-Saint-Aignan Cedex, France
| | - J.-C. Quirion
- INSA de Rouen et Université de Rouen, CNRS UMR 6014 C.O.B.R.A & FR 3038, IRCOF, 1 rue Tesnière, 76821 Mont-Saint-Aignan Cedex, France
| | - P. Jubault
- INSA de Rouen et Université de Rouen, CNRS UMR 6014 C.O.B.R.A & FR 3038, IRCOF, 1 rue Tesnière, 76821 Mont-Saint-Aignan Cedex, France
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