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Vedovato V, Gangano AJ, Ghiviriga I, Grenning AJ. Three-Component cine, ipso-Disubstitution of Nitrocoumarins. Org Lett 2024; 26:647-652. [PMID: 38215699 DOI: 10.1021/acs.orglett.3c03996] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2024]
Abstract
The development of a three-component cine,ipso-disubstitution of nitrocoumarins is reported. The reaction leverages the electrophilicity of nitrocoumarins, the nucleophilicity of nitronates, and the leaving group ability of nitrite (NO2-) to yield complex polyfunctionalized biaryls that often display stable axial chirality.
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Affiliation(s)
- Vincent Vedovato
- Department of Chemistry, University of Florida, P.O. Box 117200, Gainesville, Florida 32611, United States
| | - Anghelo J Gangano
- Department of Chemistry, University of Florida, P.O. Box 117200, Gainesville, Florida 32611, United States
| | - Ion Ghiviriga
- Department of Chemistry, University of Florida, P.O. Box 117200, Gainesville, Florida 32611, United States
| | - Alexander J Grenning
- Department of Chemistry, University of Florida, P.O. Box 117200, Gainesville, Florida 32611, United States
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Mandler MD, Suss N, Ramirez A, Farley CA, Aulakh D, Zhu Y, Traeger SC, Sarjeant A, Davies ML, Ellsworth BA, Regueiro-Ren A. Amination of Nitro-Substituted Heteroarenes by Nucleophilic Substitution of Hydrogen. Org Lett 2022; 24:7643-7648. [PMID: 36214755 DOI: 10.1021/acs.orglett.2c03133] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An open-air method for the transition metal-free direct amination of nitro(hetero)arenes by anilines is disclosed. In this methodology, an aromatic C-H bond is substituted via oxidative nucleophilic aromatic substitution of hydrogen (ONSH). Density functional theory calculations and mechanistic studies support a dianion pathway with oxidation by molecular oxygen as the rate-limiting step.
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Affiliation(s)
- Michael D Mandler
- Bristol Myers Squibb Research & Early Development, P.O. Box 4000, Princeton, New Jersey08543-4000, United States
| | - Nina Suss
- Bristol Myers Squibb Research & Early Development, P.O. Box 4000, Princeton, New Jersey08543-4000, United States
| | - Antonio Ramirez
- Bristol Myers Squibb Chemical and Synthetic Development, 1 Squibb Drive, New Brunswick, New Jersey08901, United States
| | - Christopher A Farley
- Bristol Myers Squibb Research & Early Development, P.O. Box 4000, Princeton, New Jersey08543-4000, United States
| | - Darpandeep Aulakh
- Bristol Myers Squibb Chemical and Synthetic Development, 1 Squibb Drive, New Brunswick, New Jersey08901, United States
| | - Yeheng Zhu
- Bristol Myers Squibb Research & Early Development, P.O. Box 4000, Princeton, New Jersey08543-4000, United States
| | - Sarah C Traeger
- Bristol Myers Squibb Research & Early Development, P.O. Box 4000, Princeton, New Jersey08543-4000, United States
| | - Amy Sarjeant
- Bristol Myers Squibb Chemical and Synthetic Development, 1 Squibb Drive, New Brunswick, New Jersey08901, United States
| | - Merrill L Davies
- Bristol Myers Squibb Research & Early Development, P.O. Box 4000, Princeton, New Jersey08543-4000, United States
| | - Bruce A Ellsworth
- Bristol Myers Squibb Research & Early Development, P.O. Box 4000, Princeton, New Jersey08543-4000, United States
| | - Alicia Regueiro-Ren
- Bristol Myers Squibb Research & Early Development, P.O. Box 4000, Princeton, New Jersey08543-4000, United States
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Antoniak D, Pałuba B, Basak T, Błaziak K, Barbasiewicz M. Alkylation of Nitroarenes via Vicarious Nucleophilic Substitution – Experimental and DFT Mechanistic Studies. Chemistry 2022; 28:e202201153. [DOI: 10.1002/chem.202201153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Indexed: 11/11/2022]
Affiliation(s)
- Damian Antoniak
- Faculty of Chemistry University of Warsaw Pasteura 1 02-093 Warsaw Poland
| | - Bartosz Pałuba
- Faculty of Chemistry University of Warsaw Pasteura 1 02-093 Warsaw Poland
| | - Tymoteusz Basak
- Faculty of Chemistry University of Warsaw Pasteura 1 02-093 Warsaw Poland
| | - Kacper Błaziak
- Faculty of Chemistry University of Warsaw Pasteura 1 02-093 Warsaw Poland
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Tryniszewski M, Basiak D, Barbasiewicz M. Olefination with Sulfonyl Halides and Esters: Synthesis of Unsaturated Sulfonyl Fluorides. Org Lett 2022; 24:4270-4274. [PMID: 35653711 PMCID: PMC9490844 DOI: 10.1021/acs.orglett.2c01604] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
![]()
Methanedisulfonyl
fluoride, CH2(SO2F)2, transforms
aromatic aldehydes into β-arylethenesulfonyl
fluorides, useful substrates for the SuFEx “click”-type
transformations. The reaction mimics mechanism of the Horner–Wadsworth–Emmons
olefination, which runs via addition of the carbanion, followed by
cyclization–fragmentation of the four-membered ring intermediate.
In the absence of base, electron-rich aldehydes follow an alternative
pathway of the Knoevenagel condensation to provide unsaturated 1,1-disulfonyl
fluorides. We demonstrate also trapping of elusive ethene-1,1-disulfonyl
fluoride, CH2=C(SO2F)2, with
4-(dimethylamino)pyridine (DMAP) that forms zwitterionic adduct, characterized
with X-ray studies.
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Affiliation(s)
- Michał Tryniszewski
- Faculty of Chemistry, University of Warsaw, Pasteura 1, 02-093 Warsaw, Poland
| | - Dariusz Basiak
- Faculty of Chemistry, University of Warsaw, Pasteura 1, 02-093 Warsaw, Poland
| | - Michał Barbasiewicz
- Faculty of Chemistry, University of Warsaw, Pasteura 1, 02-093 Warsaw, Poland
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