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Papis M, Bucci R, Contini A, Gelmi ML, Lo Presti L, Poli G, Broggini G, Loro C. Phosphine-Catalyzed Domino Regio- and Stereo-Selective Hexamerization of 2-(Bromomethyl)acrylates to 1,2-Bis(cyclohexenyl)ethenyl Derivatives. Org Lett 2023; 25:7380-7384. [PMID: 37772494 PMCID: PMC10580324 DOI: 10.1021/acs.orglett.3c02836] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2023] [Indexed: 09/30/2023]
Abstract
A phosphine-catalyzed domino assembly of six units of 2-bromomethyl acrylates afforded polyalkenyl adducts containing two cyclohexenyl rings. This reaction occurs under mild conditions providing the final product by formation of seven carbon-carbon bonds and four stereocenters. Experimental and computational studies support an initial dimerization of the substrate, which in turn trimerizes involving two totally regio- and stereocontrolled Diels-Alder cycloadditions. The yield of the hexamerization of the 2-bromomethyl acrylates depends on the size of the ester function. The protocol has also proved to be practicable on a gram scale.
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Affiliation(s)
- Marta Papis
- Dipartimento
di Scienza e Alta Tecnologia, Università
degli Studi dell’Insubria, Via Valleggio 9, 22100, Como, Italy
| | - Raffaella Bucci
- Dipartimento
di Scienze Farmaceutiche, DISFARM Università
degli Studi di Milano, Via Venezian 21, 20133, Milano, Italy
| | - Alessandro Contini
- Dipartimento
di Scienze Farmaceutiche, DISFARM Università
degli Studi di Milano, Via Venezian 21, 20133, Milano, Italy
| | - Maria Luisa Gelmi
- Dipartimento
di Scienze Farmaceutiche, DISFARM Università
degli Studi di Milano, Via Venezian 21, 20133, Milano, Italy
| | - Leonardo Lo Presti
- Dipartimento
di Chimica, Università degli Studi
di Milano, via Golgi
19, 20133 Milano, Italy
| | - Giovanni Poli
- Sorbonne
Université, Faculté des Sciences et Ingénierie,
CNRS, Institut Parisien de Chimie Moléculaire,
IPCM, 4 place Jussieu, 75005 Paris, France
| | - Gianluigi Broggini
- Dipartimento
di Scienza e Alta Tecnologia, Università
degli Studi dell’Insubria, Via Valleggio 9, 22100, Como, Italy
| | - Camilla Loro
- Dipartimento
di Scienza e Alta Tecnologia, Università
degli Studi dell’Insubria, Via Valleggio 9, 22100, Como, Italy
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2
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Loro C, Papis M, Foschi F, Broggini G, Poli G, Oble J. Copper(II)-Catalyzed Three-Component Arylation/Hydroamination Cascade from Allyl Alcohol: Access to 1-Aryl-2-sulfonylamino-propanes. J Org Chem 2023; 88:13995-14003. [PMID: 37747795 PMCID: PMC10563128 DOI: 10.1021/acs.joc.3c01536] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2023] [Indexed: 09/27/2023]
Abstract
A new straightforward approach to 1-aryl-2-aminopropanes using easily accessible substrates has been developed. Simple allyl alcohol is shown to be an ideal synthetic equivalent of the C3 propane-1,2-diylium bis-cation synthon in three-component cascade reactions with arenes and sulfonamide nucleophiles to regioselectively afford 1-aryl-2-aminopropanes. The reaction is catalyzed by Cu(OTf)2 and is expected to involve a Friedel-Crafts-type allylation of the arene, followed by hydroamination.
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Affiliation(s)
- Camilla Loro
- Dipartimento
di Scienza e Alta Tecnologia, Università
dell’Insubria, via Valleggio 11, 22100 Como, Italy
| | - Marta Papis
- Dipartimento
di Scienza e Alta Tecnologia, Università
dell’Insubria, via Valleggio 11, 22100 Como, Italy
| | - Francesca Foschi
- Dipartimento
di Scienza e Alta Tecnologia, Università
dell’Insubria, via Valleggio 11, 22100 Como, Italy
| | - Gianluigi Broggini
- Dipartimento
di Scienza e Alta Tecnologia, Università
dell’Insubria, via Valleggio 11, 22100 Como, Italy
| | - Giovanni Poli
- Faculté
des Sciences et Ingénierie, CNRS, Institut Parisien de Chimie
Moléculaire, IPCM, Sorbonne Université, 4 place Jussieu, 75005 Paris, France
| | - Julie Oble
- Faculté
des Sciences et Ingénierie, CNRS, Institut Parisien de Chimie
Moléculaire, IPCM, Sorbonne Université, 4 place Jussieu, 75005 Paris, France
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3
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Molteni L, Loro C, Christodoulou MS, Papis M, Foschi F, Beccalli EM, Broggini G. Ruthenium‐Catalyzed Decarboxylative Rearrangement of 4‐Alkenyl‐isoxazol‐5‐ones to Pyrrole Derivatives. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200496] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
| | - Camilla Loro
- University of Insubria: Universita degli Studi dell'Insubria DISAT ITALY
| | | | - Marta Papis
- University of Insubria Department of Science and High Technology: Universita degli Studi dell'Insubria Dipartimento di Scienza e Alta Tecnologia DISAT ITALY
| | - Francesca Foschi
- University of Insubria Department of Science and High Technology: Universita degli Studi dell'Insubria Dipartimento di Scienza e Alta Tecnologia DISAT ITALY
| | | | - Gianluigi Broggini
- Universita degli Studi dell'Insubria Dip. di Scienza e Alta Tecnologia Via Valleggio 11 22100 Como ITALY
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4
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Kim YH, Kim DB, Jang SS, Youn SW. Pd-Catalyzed Regioselective Intramolecular Allylic C-H Amination of 1,1-Disubstituted Alkenyl Amines. J Org Chem 2022; 87:7574-7580. [PMID: 35549260 DOI: 10.1021/acs.joc.2c00781] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Pd-Catalyzed intramolecular allylic C-H amination of 1,1-disubstituted alkenyl amines with various allylic tethers (X = O, NMs, CH2) was developed. This process allows for the divergent synthesis of 1,3-X,N-heterocycles through a regioselective allylic C-H cleavage and π-allylpalladium formation. Particularly noteworthy is the use of substrates containing a labile allylic moiety and new simple catalytic systems capable of promoting highly chemo- and regioselective allylic C-H amination by overcoming significant challenges.
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Affiliation(s)
- Young Ho Kim
- Center for New Directions in Organic Synthesis, Department of Chemistry and Research Institute for Natural Sciences, Hanyang University, Seoul 04763, Korea
| | - Dong Bin Kim
- Center for New Directions in Organic Synthesis, Department of Chemistry and Research Institute for Natural Sciences, Hanyang University, Seoul 04763, Korea
| | - Su San Jang
- Center for New Directions in Organic Synthesis, Department of Chemistry and Research Institute for Natural Sciences, Hanyang University, Seoul 04763, Korea
| | - So Won Youn
- Center for New Directions in Organic Synthesis, Department of Chemistry and Research Institute for Natural Sciences, Hanyang University, Seoul 04763, Korea
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