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Nizovtsev AV. A Simple Synthesis of 3,3-Diphenylcyclopropene. ORG PREP PROCED INT 2020. [DOI: 10.1080/00304948.2020.1794223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Alexey V. Nizovtsev
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Moscow, Russia
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Nishiyama H, Hosoya H, Parker BF, Arnold J, Tsurugi H, Mashima K. Hydrodehalogenation of alkyl halides catalyzed by a trichloroniobium complex with a redox active α-diimine ligand. Chem Commun (Camb) 2019; 55:7247-7250. [PMID: 31165806 DOI: 10.1039/c9cc03268a] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A high-valent d0 niobium(v) complex, (α-diimine)NbCl3 (1), bearing a dianionic redox-active α-diimine ligand served as a catalyst for a hydrodehalogenation reaction of alkyl halides in the presence of PhSiH3. During the catalytic reaction, the redox-active α-diimine ligand allowed the complex to reversibly release and accept one-electron through switching its coordination mode between a dianionic folded form and a monoanionic planar one.
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Affiliation(s)
- Haruka Nishiyama
- Department of Chemistry, Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531, Japan.
| | - Hiromu Hosoya
- Department of Chemistry, Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531, Japan.
| | - Bernard F Parker
- Department of Chemistry, Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531, Japan. and Department of Chemistry, University of California, Berkeley, California 94720, USA.
| | - John Arnold
- Department of Chemistry, University of California, Berkeley, California 94720, USA.
| | - Hayato Tsurugi
- Department of Chemistry, Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531, Japan.
| | - Kazushi Mashima
- Department of Chemistry, Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531, Japan.
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Kumar P, Zainul O, Camarda FM, Jiang T, Mannone JA, Huang W, Laughlin ST. Caged Cyclopropenes with Improved Tetrazine Ligation Kinetics. Org Lett 2019; 21:3721-3725. [DOI: 10.1021/acs.orglett.9b01177] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Pratik Kumar
- Department of Chemistry, Stony Brook University, Stony Brook, New York 11790, United States
| | - Omar Zainul
- Department of Chemistry, Stony Brook University, Stony Brook, New York 11790, United States
| | - Frank M. Camarda
- Department of Chemistry, Stony Brook University, Stony Brook, New York 11790, United States
| | - Ting Jiang
- Department of Chemistry, Stony Brook University, Stony Brook, New York 11790, United States
| | - John A. Mannone
- Department of Chemistry, Stony Brook University, Stony Brook, New York 11790, United States
| | - Wei Huang
- Department of Chemistry, Stony Brook University, Stony Brook, New York 11790, United States
| | - Scott T. Laughlin
- Department of Chemistry, Stony Brook University, Stony Brook, New York 11790, United States
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Jeffrey JL, Terrett JA, MacMillan DWC. O-H hydrogen bonding promotes H-atom transfer from α C-H bonds for C-alkylation of alcohols. Science 2015; 349:1532-6. [PMID: 26316601 DOI: 10.1126/science.aac8555] [Citation(s) in RCA: 344] [Impact Index Per Article: 38.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2015] [Accepted: 08/12/2015] [Indexed: 12/12/2022]
Abstract
The efficiency and selectivity of hydrogen atom transfer from organic molecules are often difficult to control in the presence of multiple potential hydrogen atom donors and acceptors. Here, we describe the mechanistic evaluation of a mode of catalytic activation that accomplishes the highly selective photoredox α-alkylation/lactonization of alcohols with methyl acrylate via a hydrogen atom transfer mechanism. Our studies indicate a particular role of tetra-n-butylammonium phosphate in enhancing the selectivity for α C-H bonds in alcohols in the presence of allylic, benzylic, α-C=O, and α-ether C-H bonds.
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Affiliation(s)
- Jenna L Jeffrey
- Merck Center for Catalysis, Princeton University, Princeton, NJ 08544, USA
| | - Jack A Terrett
- Merck Center for Catalysis, Princeton University, Princeton, NJ 08544, USA
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Wolan A, Six Y. Synthetic transformations mediated by the combination of titanium(IV) alkoxides and Grignard reagents: selectivity issues and recent applications. Part 2: Reactions of alkenes, allenes and alkynes. Tetrahedron 2010. [DOI: 10.1016/j.tet.2010.01.079] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Concellón J, Rodríguez-Solla H, Blanco EG, Villa-García MA, Alvaredo N, García-Granda S, Díaz MR. Highly Stereoselective Halocyclopropanation of α,β-Unsaturated Amides. Adv Synth Catal 2009. [DOI: 10.1002/adsc.200900331] [Citation(s) in RCA: 9] [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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Matsubara H, Tsukida M, Yasuda S, Ryu I. Cyclopropanation of alkenes with CH2I2/Et3Al by the phase-vanishing method based on fluorous phase screen. J Fluor Chem 2008. [DOI: 10.1016/j.jfluchem.2008.06.004] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Diev VV, Kostikov RR, Gleiter R, Molchanov AP. Cyclopropenes in the 1,3-Dipolar Cycloaddition with Carbonyl Ylides: Experimental and Theoretical Evidence for the Enhancement of σ-Withdrawal in 3-Substituted-Cyclopropenes. J Org Chem 2006; 71:4066-77. [PMID: 16709045 DOI: 10.1021/jo0600656] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The carbonyl ylide dipoles generated by the dirhodium tetra-acetate-catalyzed decomposition of diazocarbonyl precursors 1, 5, and 8 cycloadd to 3-substituted 1,2-diphenylcyclopropenes 3a-e and 3,3-disubstituted cyclopropenes 13, 14, 19, and 20 to give polycyclic compounds with 8-oxatricyclo[3.2.1.0(2,4)]octane and 9-oxatricyclo[3.3.1.0(2,4)]nonane frameworks. Generally, reactions proceed stereoselectively to give adducts of exo stereochemistry with the approach of the carbonyl ylide dipoles from the less-hindered face of cyclopropenes. The electronic properties of the substituent at the C3 position of cyclopropenes play an important role in governing the reactivity of cyclopropenes: when the C3 position is substituted by electron-acceptors such as the methoxycarbonyl or cyano groups, the yields of adducts are decreased significantly or no adducts can be detected at all. Relative reactivities of cyclopropenes were quantified by competition experiments to give the best correlation with sigmaF-Taft constants. Both measured photoelectron spectra and ground-state calculations of a series of 1,2-diphenylcyclopropenes indicate considerable lowering of cyclopropene pi-HOMO energies by substitution with an acceptor group. Such changes in electronic structures of cyclopropenes may cause the inversion of frontier molecular orbital (FMO) interactions from HOMO(cyclopropene)-LUMO(ylide) to LUMO(cyclopropene)-HOMO(ylide) type. In terms of philicity, nucleophilic properties of acceptor-substituted cyclopropenes are diminished to such an extent that these species are no longer good nucleophiles in the reaction with carbonyl ylides, and neither are they good electrophiles, being unreactive. This was shown by the B3LYP calculations of addends.
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Affiliation(s)
- Vyacheslav V Diev
- Department of Chemistry, Saint Petersburg State University, 198504 Universitetsky pr. 26, Saint Petersburg, Russian Federation
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Sydnes LK. Allenes from cyclopropanes and their use in organic synthesis-recent developments. Chem Rev 2003; 103:1133-50. [PMID: 12683779 DOI: 10.1021/cr010025w] [Citation(s) in RCA: 340] [Impact Index Per Article: 16.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Leiv K Sydnes
- Department of Chemistry, University of Bergen, Allégt. 41, NO-5007 Bergen, Norway.
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Fedoryński M. Syntheses of gem-dihalocyclopropanes and their use in organic synthesis. Chem Rev 2003; 103:1099-132. [PMID: 12683778 DOI: 10.1021/cr0100087] [Citation(s) in RCA: 252] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Michał Fedoryński
- Faculty of Chemistry, Warsaw University of Technology, Koszykowa 75, 00-662 Warsaw, Poland.
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Alonso F, Beletskaya IP, Yus M. Metal-mediated reductive hydrodehalogenation of organic halides. Chem Rev 2002; 102:4009-91. [PMID: 12428984 DOI: 10.1021/cr0102967] [Citation(s) in RCA: 606] [Impact Index Per Article: 27.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Francisco Alonso
- Departamento de Química Orgánica, Facultad de Ciencias, Universidad de Alicante, Apdo 99, E-03080 Alicante, Spain
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Baird MS, Nizovtsev AV, Bolesov IG. Bromine–magnesium exchange in gem-dibromocyclopropanes using Grignard reagents. Tetrahedron 2002. [DOI: 10.1016/s0040-4020(02)00018-2] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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