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Monopoli A, Casiello M, Fusco C, D'Accolti L, Ciminale F, Nacci A. Insights into Pinacol Rearrangement: Oxidative
versus
Acid‐Catalyzed Mechanism. ChemistrySelect 2021. [DOI: 10.1002/slct.202102552] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Antonio Monopoli
- Department of Chemistry University of Bari Aldo Moro Via Orabona 4 70125 Bari Italy
| | - Michele Casiello
- Department of Chemistry University of Bari Aldo Moro Via Orabona 4 70125 Bari Italy
| | | | - Lucia D'Accolti
- Department of Chemistry University of Bari Aldo Moro Via Orabona 4 70125 Bari Italy
- ICCOM-CNR, SS Bari Via Orabona 4 70125 Bari Italy
| | - Francesco Ciminale
- Department of Chemistry University of Bari Aldo Moro Via Orabona 4 70125 Bari Italy
| | - Angelo Nacci
- Department of Chemistry University of Bari Aldo Moro Via Orabona 4 70125 Bari Italy
- ICCOM-CNR, SS Bari Via Orabona 4 70125 Bari Italy
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2
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Chen X, Wu C, Li J, Li Y. Chemoselectivity of Pinacol Rearrangement Originate by Different Hexafluoroantimonate Oxidant. Z Anorg Allg Chem 2018. [DOI: 10.1002/zaac.201800209] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Xiaoyu Chen
- Jiangsu Key Laboratory of Fire Safety in Urban Underground Space; School of Safety; China University of Mining and Technolog; 221116 Xuzhou P. R. China
| | - Chunlei Wu
- Jiangsu Key Laboratory of Fire Safety in Urban Underground Space; School of Safety; China University of Mining and Technolog; 221116 Xuzhou P. R. China
| | - Jia Li
- Jiangsu Key Laboratory of Fire Safety in Urban Underground Space; School of Safety; China University of Mining and Technolog; 221116 Xuzhou P. R. China
| | - Yue Li
- Jiangsu Key Laboratory of Fire Safety in Urban Underground Space; School of Safety; China University of Mining and Technolog; 221116 Xuzhou P. R. China
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3
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Zhou MY, Kong SS, Zhang LQ, Zhao M, Duan JA, Ou-yang Z, Wang M. CuBr2 catalyzed bromination/oxidation of isochromans to benzaldehyde derivatives. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2013.05.078] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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4
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Freccero M, Pratt A, Albini A, Long C. A Kinetic Evaluation of Carbon−Hydrogen, Carbon−Carbon, and Carbon−Silicon Bond Activation in Benzylic Radical Cations. J Am Chem Soc 1998. [DOI: 10.1021/ja970940s] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Mauro Freccero
- Contribution from the School of Chemical Sciences, Dublin City University, Dublin 9, Ireland, and Dipartimento di Chimica Organica dell'Università di Pavia, viale Taramelli 10, 27100 Pavia, Italy
| | - Albert Pratt
- Contribution from the School of Chemical Sciences, Dublin City University, Dublin 9, Ireland, and Dipartimento di Chimica Organica dell'Università di Pavia, viale Taramelli 10, 27100 Pavia, Italy
| | - Angelo Albini
- Contribution from the School of Chemical Sciences, Dublin City University, Dublin 9, Ireland, and Dipartimento di Chimica Organica dell'Università di Pavia, viale Taramelli 10, 27100 Pavia, Italy
| | - Conor Long
- Contribution from the School of Chemical Sciences, Dublin City University, Dublin 9, Ireland, and Dipartimento di Chimica Organica dell'Università di Pavia, viale Taramelli 10, 27100 Pavia, Italy
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5
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Lopez L, Farinola GM, Paradiso V, Mele G, Nacci A. Reactions on (R) and (S)-1,1,2-triphenyl-1,2-ethandiols induced by aminium salts and protic acids. Solvent effect. Tetrahedron 1997. [DOI: 10.1016/s0040-4020(97)00689-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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6
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Fujita M, Ishida A, Takamuku S, Fukuzumi S. Addition versus Oxygenation of Alkylbenzenes with 10-Methylacridinium Ion via Photoinduced Electron Transfer. J Am Chem Soc 1996. [DOI: 10.1021/ja9538952] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Morifumi Fujita
- Contribution from the Department of Applied Chemistry, Faculty of Engineering, Osaka University, Suita, Osaka 565, Japan, and The Institute of Scientific and Industrial Research, Osaka University, Ibaraki, Osaka 567, Japan
| | - Akito Ishida
- Contribution from the Department of Applied Chemistry, Faculty of Engineering, Osaka University, Suita, Osaka 565, Japan, and The Institute of Scientific and Industrial Research, Osaka University, Ibaraki, Osaka 567, Japan
| | - Setsuo Takamuku
- Contribution from the Department of Applied Chemistry, Faculty of Engineering, Osaka University, Suita, Osaka 565, Japan, and The Institute of Scientific and Industrial Research, Osaka University, Ibaraki, Osaka 567, Japan
| | - Shunichi Fukuzumi
- Contribution from the Department of Applied Chemistry, Faculty of Engineering, Osaka University, Suita, Osaka 565, Japan, and The Institute of Scientific and Industrial Research, Osaka University, Ibaraki, Osaka 567, Japan
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Baciocchi E, Bietti M, Putignani L, Steenken S. Side-Chain Fragmentation of Arylalkanol Radical Cations. Carbon−Carbon and Carbon−Hydrogen Bond Cleavage and the Role of α- and β-OH Groups. J Am Chem Soc 1996. [DOI: 10.1021/ja954236s] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Enrico Baciocchi
- Contribution from the Dipartimento di Chimica, Università “La Sapienza”, P. le A. Moro, 5 00185 Rome, Italy, and Max-Planck-Institut für Strahlenchemie, D-45413 Mülheim, Germany
| | - Massimo Bietti
- Contribution from the Dipartimento di Chimica, Università “La Sapienza”, P. le A. Moro, 5 00185 Rome, Italy, and Max-Planck-Institut für Strahlenchemie, D-45413 Mülheim, Germany
| | - Lorenza Putignani
- Contribution from the Dipartimento di Chimica, Università “La Sapienza”, P. le A. Moro, 5 00185 Rome, Italy, and Max-Planck-Institut für Strahlenchemie, D-45413 Mülheim, Germany
| | - Steen Steenken
- Contribution from the Dipartimento di Chimica, Università “La Sapienza”, P. le A. Moro, 5 00185 Rome, Italy, and Max-Planck-Institut für Strahlenchemie, D-45413 Mülheim, Germany
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Abstract
Oxidation of the tetraarylpinacols (Ar(2)COH)(2), 1a-e, in which Ar = C(6)H(5) (1a), 4-ClC(6)H(4) (1b), 4-MeC(6)H(4) (1c), 4-MeOC(6)H(4) (1d) and 4-Me(2)NC(6)H(4) (1e), by thianthrene cation radical (Th(*+)) in CH(3)CN and in CH(2)Cl(2) led quantitatively to the corresponding diaryl ketones Ar(2)C=O (2a-e), provided a sufficient amount of base, 2,6-di-tert-butyl-4-methylpyridine (DTBMP), was present to prevent presumed acid-catalyzed rearrangement. In the case of 1e, continued oxidation of 2e was also observed. Oxidation of 1a by (4-BrC(6)H(4))(3)N(*+)SbCl(6)(-) and (4-BrC(6)H(4))(3)N(*+)SbF(6)(-) (Ar(3)N(*+)) occurred analogously. Evidence for the catalytic, cation-radical rearrangement of 1a by Ar(3)N(*+) (reported in earlier literature) and by Th(*+) could not be found. Quantitative oxidation of 1a to 2a and of 1d to 2d was obtained also with NOBF(4), again provided that sufficient DTBMP was present to prevent acid-catalyzed rearrangement. Catalytic, oxidative rearrangement of 1d at room temperature and (as reported in earlier literature) at -5 degrees C was not observed. Oxidation was also observed of 2,3-diphenyl-2,3-butanediol (3) to acetophenone (9) and of 1,1-dimethyl-2,2-diphenylethanediol (4) to 2a and acetone by Th(*+). Oxidation of 2,3-dimethyl-2,3-butanediol (5) by Th(*+) was not observed. Instead, even in the presence of DTBMP, pinacolone (10) and tetramethyloxirane (11) were formed, through, it is proposed, a mechanism involving complexation with Th(*+).
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Affiliation(s)
- Dong Sul Han
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79409-1601
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9
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Affiliation(s)
| | - David G. Whitten
- Department of Chemistry, University of Rochester, Rochester, New York 14627
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10
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11
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A new method in radical chemistry: Generation of radicals by photo-induced electron transfer and fragmentation of the radical cation. Tetrahedron 1994. [DOI: 10.1016/s0040-4020(01)80780-8] [Citation(s) in RCA: 86] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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12
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13
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14
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Maslak P. Fragmentations by photoinduced electron transfer. Fundamentals and practical aspects. PHOTOINDUCED ELECTRON TRANSFER V 1993. [DOI: 10.1007/3-540-56746-1_7] [Citation(s) in RCA: 47] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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15
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16
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d'Alessandro N, Mella M, Fasani E, Toma L, Albini A. The Photochemical Reaction between 1,4-Dicyanonaphthalene and benzyl ethers. Tetrahedron 1991. [DOI: 10.1016/s0040-4020(01)80967-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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17
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Maslak P, Chapman WH. Dicyanobenzene sensitized carbon-carbon bond cleavage in methoxybicumenes. Products and mechanistic studies. Tetrahedron 1990. [DOI: 10.1016/s0040-4020(01)88366-6] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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18
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