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Pothireddy M, Bhukta S, Babu PV, Thirupathi B, Dandela R. Synthetic method to access fluorinated 2-benzylpyridines by using Negishi coupling reaction. SYNTHETIC COMMUN 2022. [DOI: 10.1080/00397911.2022.2037651] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Mohanreddy Pothireddy
- Department of Industrial and Engineering Chemistry, Institute of Chemical Technology, Bhubaneswar, India
| | - Swadhapriya Bhukta
- Department of Industrial and Engineering Chemistry, Institute of Chemical Technology, Bhubaneswar, India
| | - P. Vijaya Babu
- Dr. Reddy’s Institute of Life Sciences, University of Hyderabad Campus, Hyderabad, India
| | - Barla Thirupathi
- Department of Chemical Sciences, Indian Institute of Science Education and Research Berhampur, Berhampur, India
| | - Rambabu Dandela
- Department of Industrial and Engineering Chemistry, Institute of Chemical Technology, Bhubaneswar, India
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Kato Y, Inoue T, Furuyama Y, Ohgane K, Sadaie M, Kuramochi K. Deoxygenation of tertiary and secondary alcohols with sodium borohydride, trimethylsilyl chloride, and potassium iodide in acetonitrile. Tetrahedron Lett 2021. [DOI: 10.1016/j.tetlet.2021.153519] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Meng N, Yu W, Suzuki T, Chen M, Qi Z, Hu B, Bao J, Debenham JS, Mazzola R, Duffy JL. Mild Condition for the Deoxygenation of α-Heteroaryl-Substituted Methanol Derivatives. J Org Chem 2021; 86:5560-5567. [PMID: 33784101 DOI: 10.1021/acs.joc.1c00067] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
A mild condition via PPh3/I2/imidazole for the deoxygenation of substituted methanol derivatives has been identified. This metal-free process was found to proceed well on secondary or tertiary alcohols substituted with one or two heteroaryl groups, and it tolerates acid-sensitive heterocycles. This condition works for methanol derivatives substituted with 2-pyridyl, 4-pyridyl, or other heterocyclic groups, allowing the negative charge formed during the reaction to resonate to a nitrogen atom. Methanol derivatives substituted with 3-pyridyl or heterocyclic groups that do not allow the negative charge formed during the reaction to resonate to a nitrogen atom will not undergo deoxygenation under this condition.
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Affiliation(s)
- Na Meng
- IDSU, WuXi AppTec Company, Ltd., Shanghai 200131, China
| | - Wensheng Yu
- Merck & Company, Inc., 2015 Galloping Hill Road, Kenilworth, New Jersey 07033, United States
| | - Takao Suzuki
- IDSU, WuXi AppTec Company, Ltd., Shanghai 200131, China
| | - Maofen Chen
- IDSU, WuXi AppTec Company, Ltd., Shanghai 200131, China
| | - Zhiqi Qi
- IDSU, WuXi AppTec Company, Ltd., Shanghai 200131, China
| | - Bin Hu
- IDSU, WuXi AppTec Company, Ltd., Shanghai 200131, China
| | - Jianming Bao
- Merck & Company, Inc., 2015 Galloping Hill Road, Kenilworth, New Jersey 07033, United States
| | - John S Debenham
- Merck & Company, Inc., 2015 Galloping Hill Road, Kenilworth, New Jersey 07033, United States
| | - Robert Mazzola
- Merck & Company, Inc., 2015 Galloping Hill Road, Kenilworth, New Jersey 07033, United States
| | - Joseph L Duffy
- Merck & Company, Inc., 2015 Galloping Hill Road, Kenilworth, New Jersey 07033, United States
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Czarnecka A, Kowalska E, Bodzioch A, Skalik J, Koprowski M, Owsianik K, Bałczewski P. A selective removal of the secondary hydroxy group from ortho-dithioacetal-substituted diarylmethanols. Beilstein J Org Chem 2018; 14:1229-1237. [PMID: 29977391 PMCID: PMC6009171 DOI: 10.3762/bjoc.14.105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2018] [Accepted: 04/27/2018] [Indexed: 11/26/2022] Open
Abstract
We present a successful deoxygenation reaction of ortho-1,3-dithianylaryl(aryl)methanols which enables a selective removal of the secondary hydroxy group in presence of the 1,3-dithianyl moiety under reductive conditions. This reaction proceeds well with ZnI2/Na(CN)BH3 in dichloroethane or benzene for both unsubstituted and substituted aryls (by electron-rich groups). This is leading to formyl-protected diarylmethanes with potential application in the synthesis of new pharmaceuticals and optoelectronic materials. This synthetic approach gives an access to a wide variety of functionalized ortho-1,3-dithianylaryl(aryl)methanes in 26–95% yields and is recommended for the substrates containing sulfur atoms, for which transition metal-induced reactions fail.
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Affiliation(s)
- Anna Czarnecka
- Group of Synthesis of Functional Materials, Centre of Molecular and Macromolecular Studies, Polish Academy of Sciences, Sienkiewicza 112, 90-363 Łódź, Poland
| | - Emilia Kowalska
- Group of Synthesis of Functional Materials, Centre of Molecular and Macromolecular Studies, Polish Academy of Sciences, Sienkiewicza 112, 90-363 Łódź, Poland
| | - Agnieszka Bodzioch
- Group of Synthesis of Functional Materials, Centre of Molecular and Macromolecular Studies, Polish Academy of Sciences, Sienkiewicza 112, 90-363 Łódź, Poland
| | - Joanna Skalik
- Group of Synthesis of Functional Materials, Centre of Molecular and Macromolecular Studies, Polish Academy of Sciences, Sienkiewicza 112, 90-363 Łódź, Poland
| | - Marek Koprowski
- Group of Synthesis of Functional Materials, Centre of Molecular and Macromolecular Studies, Polish Academy of Sciences, Sienkiewicza 112, 90-363 Łódź, Poland
| | - Krzysztof Owsianik
- Group of Synthesis of Functional Materials, Centre of Molecular and Macromolecular Studies, Polish Academy of Sciences, Sienkiewicza 112, 90-363 Łódź, Poland
| | - Piotr Bałczewski
- Group of Synthesis of Functional Materials, Centre of Molecular and Macromolecular Studies, Polish Academy of Sciences, Sienkiewicza 112, 90-363 Łódź, Poland.,Department of Structural and Material Research, Institute of Chemistry, Environmental Protection and Biotechnology, Faculty of Mathematics and Natural Sciences, Jan Długosz University in Częstochowa, Armii Krajowej 13/15, 42-200 Częstochowa, Poland
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Synthesis and structural characterization of a highly substituted triazine ring comprising a sterically flexible methylene linker and coordinating substituents. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2017.05.083] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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