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Bergstrom BD, Toth-Williams G, Lo A, Toman JW, Fettinger JC, Shaw JT. One-Pot Assembly and Synthetic Applications of Geminal Acyl/Alkoxy Tetrasubstituted Allenes. J Org Chem 2022; 87:12175-12181. [PMID: 36006876 DOI: 10.1021/acs.joc.2c01322] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Polysubstituted allenes are useful synthetic intermediates in many applications, offering structural complexity, modularity, and their axial chirality in further transformations. While acyl and alkoxy-substituted allenes are known, there are currently few examples of allenes containing both functionalities and no reports of geminally substituted acyl/alkoxy allenes being isolated and characterized. Herein, we report the synthesis of tetrasubstituted allenes featuring a novel geminal acyl/alkoxy substitution. These unique "push-pull" allenes are bench-stable and exhibit interesting reactivity in several applications.
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Affiliation(s)
- Benjamin D Bergstrom
- Department of Chemistry, University of California, Davis, One Shields Avenue, Davis, California 95616, United States
| | - Garrett Toth-Williams
- Department of Chemistry, University of California, Davis, One Shields Avenue, Davis, California 95616, United States
| | - Anna Lo
- Department of Chemistry, University of California, Davis, One Shields Avenue, Davis, California 95616, United States
| | - Jeffrey W Toman
- Department of Chemistry, University of California, Davis, One Shields Avenue, Davis, California 95616, United States
| | - James C Fettinger
- Department of Chemistry, University of California, Davis, One Shields Avenue, Davis, California 95616, United States
| | - Jared T Shaw
- Department of Chemistry, University of California, Davis, One Shields Avenue, Davis, California 95616, United States
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Gaied LB, Fincias N, Garrec J, Kaïm LE. 5- endo-dig
Cyclization of O-Propargyl Mandelic Acid Amides towards 2,5-Dihydrofurans. European J Org Chem 2019. [DOI: 10.1002/ejoc.201901397] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Lilia Ben Gaied
- Laboratoire de physico-chimie des microstructures et microsystèmes; Institut Préparatoire aux Etudes Scientifiques et Techniques, La Marsa; B.P. 51 2070 La Marsa Tunisie
| | - Nicolas Fincias
- Laboratoire de Synthèse Organique (LSO); Ecole Polytechnique; CNRS; ENSTA Paris-UMR 7652; Institut Polytechnique de Paris; 828 Bd des Maréchaux 91128 Palaiseau France
| | - Julian Garrec
- Laboratoire de Synthèse Organique (LSO); Ecole Polytechnique; CNRS; ENSTA Paris-UMR 7652; Institut Polytechnique de Paris; 828 Bd des Maréchaux 91128 Palaiseau France
| | - Laurent El Kaïm
- Laboratoire de Synthèse Organique (LSO); Ecole Polytechnique; CNRS; ENSTA Paris-UMR 7652; Institut Polytechnique de Paris; 828 Bd des Maréchaux 91128 Palaiseau France
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Tayama E, Sotome S. Dearomative [2,3] sigmatropic rearrangement of ammonium ylides followed by 1,4-elimination to form α-(ortho-vinylphenyl)amino acid esters. Org Biomol Chem 2018; 16:4833-4839. [DOI: 10.1039/c8ob01091a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A base-induced dearomative [2,3] sigmatropic rearrangement followed by 1,4-elimination produced α-(ortho-vinylphenyl)amino acid esters.
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Affiliation(s)
- Eiji Tayama
- Department of Chemistry
- Faculty of Science
- Niigata University
- Niigata
- Japan
| | - Sho Sotome
- Graduate School of Science and Technology
- Niigata University
- Niigata
- Japan
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