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Regioselective [3+3] Cyclization of 1,3-Bis(silyloxy)buta-1,3-dienes with 1,1,1-Trifluoro-4-(silyloxy)alk-3-en-2-ones: New and Convenient Synthesis of Functionalized 5-Alkyl-3-(trifluoromethyl)phenols. Helv Chim Acta 2013. [DOI: 10.1002/hlca.201200056] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Reimann S, Bunescu A, Litschko R, Erfle S, Domke L, Bendrath F, Abilov ZA, Spannenberg A, Villinger A, Langer P. Formal [3+3] cyclocondensations of 1,3-bis(silyloxy)-1,3-butadienes with 1-chloro-1,1-difluoro-4,4-dimethoxybut-3-en-2-one and 1,1-difluoro-4,4-dimethoxybut-3-en-2-one. Regioselective synthesis of fluorinated salicylates and pyran-4-ones. J Fluor Chem 2012. [DOI: 10.1016/j.jfluchem.2012.03.019] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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3
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Erfle S, Reimann S, Bunescu A, Abilov ZA, Spannenberg A, Langer P. Regioselective Synthesis of 6-[Chloro(difluoro)methyl]salicylates by [3+3] Cyclocondensations of 1,3-Bis(trimethylsilyloxy)buta-1,3-dienes with 1-Chloro-1,1-difluoro-4-(trimethylsilyloxy)pent-3-en-2-one. Helv Chim Acta 2012. [DOI: 10.1002/hlca.201100494] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Regioselective synthesis of CF2Cl-substituted biaryls by [3+3] cyclocondensation of 1,3-bis(trimethylsilyloxy)-1,3-butadienes with 4-aryl-1-chloro-1,1-difluoro-4-(trimethylsilyloxy)-3-en-2-ones. MONATSHEFTE FUR CHEMIE 2012. [DOI: 10.1007/s00706-012-0795-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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5
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[3+3] Cyclizations of 1,3-bis(trimethylsilyloxy)-1,3-butadienes—a new approach to diverse CF3-substituted fluorenes, dibenzofurans, 9,10-dihydrophenanthrenes and 6H-benzo[c]chromenes. Tetrahedron 2012. [DOI: 10.1016/j.tet.2012.01.101] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Ladzik S, Lubbe M, Kelzhanova NK, Abilov ZA, Feist H, Langer P. Regioselective synthesis of 5-ethoxycarbonyl-, 5-acetyl- and 5-trifluoroacetyl-6-trifluoromethylsalicylates by one-pot cyclizations of 1,3-bis(trimethylsilyloxy)-1,3-butadienes with 3-alkoxy-2-alken-1-ones. J Fluor Chem 2012. [DOI: 10.1016/j.jfluchem.2012.02.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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7
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Knöpke LR, Reimann S, Spannenberg A, Langer P, Brückner A, Bentrup U. Elucidating the Directing Effect of Lewis Acids on the Reaction Pathway in Formal [3+3] Cyclocondensation Reactions: A Comprehensive In Situ Spectroscopic Study. ChemCatChem 2011. [DOI: 10.1002/cctc.201100150] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Iaroshenko VO, Bunescu A, Domke L, Spannenberg A, Sevenard DV, Villinger A, Sosnovskikh VY, Langer P. Synthesis of trifluoromethyl-substituted salicylates by cyclocondensation of 1,3-bis(silyloxy)-1,3-butadienes with 4,4-dimethylthio-1,1,1-trifluorobut-3-en-2-one. J Fluor Chem 2011. [DOI: 10.1016/j.jfluchem.2011.04.011] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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9
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Bunescu A, Reimann S, Lubbe M, Spannenberg A, Langer P. Synthesis of Trifluoromethyl-Substituted Arenes, Cyclohexenones and Pyran-4-ones by Cyclocondensation of 1,3-Bis(silyloxy)-1,3-butadienes with 4,4-Dimethoxy-1,1,1-trifluorobut-3-en-2-one: Influence of the Lewis Acid on the Product Distribution. J Org Chem 2009; 74:5002-10. [DOI: 10.1021/jo900702u] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Alina Bunescu
- Institut für Chemie, Universität Rostock, Albert-Einstein-Strausse 3a, 18059 Rostock, Germany, and Leibniz-Institut für Katalyse e. V. an der Universität Rostock, Albert-Einstein-Strausse 29a, 18059 Rostock, Germany
| | - Sebastian Reimann
- Institut für Chemie, Universität Rostock, Albert-Einstein-Strausse 3a, 18059 Rostock, Germany, and Leibniz-Institut für Katalyse e. V. an der Universität Rostock, Albert-Einstein-Strausse 29a, 18059 Rostock, Germany
| | - Mathias Lubbe
- Institut für Chemie, Universität Rostock, Albert-Einstein-Strausse 3a, 18059 Rostock, Germany, and Leibniz-Institut für Katalyse e. V. an der Universität Rostock, Albert-Einstein-Strausse 29a, 18059 Rostock, Germany
| | - Anke Spannenberg
- Institut für Chemie, Universität Rostock, Albert-Einstein-Strausse 3a, 18059 Rostock, Germany, and Leibniz-Institut für Katalyse e. V. an der Universität Rostock, Albert-Einstein-Strausse 29a, 18059 Rostock, Germany
| | - Peter Langer
- Institut für Chemie, Universität Rostock, Albert-Einstein-Strausse 3a, 18059 Rostock, Germany, and Leibniz-Institut für Katalyse e. V. an der Universität Rostock, Albert-Einstein-Strausse 29a, 18059 Rostock, Germany
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Regioselective synthesis of 4-alkyl- and 4-aryl-6-(perfluoroalkyl)salicylic acid derivatives by formal [3+3] cyclocondensation of 1,3-bis(silyloxy)-1,3-butadienes with 3-silyloxy-1-(perfluoroalkyl)prop-2-en-1-ones. Tetrahedron 2008. [DOI: 10.1016/j.tet.2008.06.009] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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11
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Ryabukhin SV, Plaskon AS, Ostapchuk EN, Volochnyuk DM, Shishkin OV, Tolmachev AA. CF3-substituted 1,3-dicarbonyl compounds in the Biginelli reaction promoted by chlorotrimethylsilane. J Fluor Chem 2008. [DOI: 10.1016/j.jfluchem.2008.05.004] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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12
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Mamat C, Pundt T, Tam Dang TH, Klassen R, Reinke H, Köckerling M, Langer P. One-Pot Synthesis of Functionalized 3-(Trifluoromethyl)phenols by [3+3] Cyclization of 1,3-Bis(silyl enol ethers) with α,β-Unsaturated Trifluoromethyl Ketones. European J Org Chem 2008. [DOI: 10.1002/ejoc.200700801] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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13
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Regioselective synthesis of diaryl sulfides by [3+3] cyclizations of 1,3-bis(trimethylsilyloxy)-1,3-dienes. Tetrahedron Lett 2007. [DOI: 10.1016/j.tetlet.2007.01.150] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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14
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Lubbe M, Mamat C, Fischer C, Langer P. Synthesis of 6-(perfluoroalkyl)salicylates by [3+3] cyclization of 1,3-bis(silyl enol ethers) with 3-ethoxy-1-(perfluoroalkyl)prop-2-en-1-ones. Tetrahedron 2007. [DOI: 10.1016/j.tet.2006.10.062] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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15
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Synthesis of functionalized arylalkyl and diaryl ethers by [3+3] cyclization of 3-alkoxy- and 3-aryloxy-1-siloxy-1,3-butadienes with 3-(silyloxy)alk-2-en-1-ones. Tetrahedron Lett 2006. [DOI: 10.1016/j.tetlet.2006.09.126] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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16
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Synthesis of 7-hydroxy-6H-benzo[c]chromen-6-ones based on a ‘[3+3] cyclization/domino retro-Michael–aldol–lactonization’ strategy. Tetrahedron 2006. [DOI: 10.1016/j.tet.2006.07.084] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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17
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Reim S, Lau M, Langer P. Synthesis of fluorenones based on a ‘[3+3] cyclization/Suzuki cross-coupling/Friedel–Crafts acylation’ strategy. Tetrahedron Lett 2006. [DOI: 10.1016/j.tetlet.2006.07.025] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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