1
|
Allylic substitution reactions with fluorinated nucleophiles. Coord Chem Rev 2022. [DOI: 10.1016/j.ccr.2022.214455] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
|
2
|
Erdeljac N, Mück‐Lichtenfeld C, Daniliuc CG, Gilmour R. Conformational Analysis of Acyclic α-Fluoro Sulfur Motifs. Chemistry 2020; 26:13704-13715. [PMID: 32735052 PMCID: PMC7702044 DOI: 10.1002/chem.202003361] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Revised: 07/29/2020] [Indexed: 12/04/2022]
Abstract
Bioactive small molecules containing α-fluoro sulfur motifs [RS(O)n CH2 F] are appearing with increasing frequency in the pharmaceutical and agrochemical sectors. Prominent examples include the anti-asthma drug Flovent® and the phenylpyrazole insecticide pyrafluprole. Given the popularity of these structural units in bioactive small molecule design, together with the varying oxidation states of sulfur, a conformational analysis of α-fluoro sulfides, sulfoxides, and sulfones, would be instructive in order to delineate the non-covalent interactions that manifest themselves in structure. A combined crystallographic and computational analysis demonstrates the importance of hyperconjugative donor-acceptor interactions in achieving acyclic conformational control. The conformational disparity in the syn- and anti-diastereoisomers of α-fluorosulfoxides is particularly noteworthy.
Collapse
Affiliation(s)
- Nathalie Erdeljac
- Organisch-Chemisches InstitutWestfälische Wilhelms-Universität MünsterCorrensstraße 3648149MünsterGermany
| | - Christian Mück‐Lichtenfeld
- Organisch-Chemisches InstitutWestfälische Wilhelms-Universität MünsterCorrensstraße 3648149MünsterGermany
| | - Constantin G. Daniliuc
- Organisch-Chemisches InstitutWestfälische Wilhelms-Universität MünsterCorrensstraße 3648149MünsterGermany
| | - Ryan Gilmour
- Organisch-Chemisches InstitutWestfälische Wilhelms-Universität MünsterCorrensstraße 3648149MünsterGermany
| |
Collapse
|
3
|
Bon DJYD, Kováč O, Ferugová V, Zálešák F, Pospíšil J. One and Two-Carbon Homologation of Primary and Secondary Alcohols to Corresponding Carboxylic Esters Using β-Carbonyl BT Sulfones as a Common Intermediate. J Org Chem 2018; 83:4990-5001. [PMID: 29667824 DOI: 10.1021/acs.joc.8b00112] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Herein we report the efficient one- and two-carbon homologation of 1° and 2° alcohols to their corresponding homologated esters via the Mitsunobu reaction using β-carbonyl benzothiazole (BT) sulfone intermediates. The one-carbon homologation approach uses standard Mitsunobu C-S bond formation, oxidation and subsequent alkylation, while the two-carbon homologation uses a less common C-C bond forming Mitsunobu reaction. In this latter case, the use of β-BT sulfone bearing esters lowers the p Ka sufficiently enough for the substrate to be used as a carbon-based nucleophile and deliver the homologated β-BT sulfone ester, and this superfluous sulfone group can then be cleaved. In this paper we describe several methods for the effective desulfonylation of BT sulfones and have developed methodology for one-pot alkylation-desulfonylation sequences. As such, overall, a one-carbon homologation sequence can be achieved in a two-pot (four step) procedure and the two-carbon homologation in a two-pot (three step) procedure (three-pot; four step when C-acid synthesis is included). This methodology has been applied to a wide variety of functionality (esters, silyl ethers, benzyls, heteroaryls, ketones, olefins and alkynes) and are all tolerated well providing good to very good overall yields. The power of our method was demonstrated in site-selective ingenol C20 allylic alcohol two-carbon homologation.
Collapse
Affiliation(s)
- David J-Y D Bon
- Department of Organic Chemistry, Faculty of Science , Palacky University , tř. 17. listopadu 1192/12 , CZ-771 46 Olomouc , Czech Republic
| | - Ondřej Kováč
- Department of Organic Chemistry, Faculty of Science , Palacky University , tř. 17. listopadu 1192/12 , CZ-771 46 Olomouc , Czech Republic
| | - Vendula Ferugová
- Department of Organic Chemistry, Faculty of Science , Palacky University , tř. 17. listopadu 1192/12 , CZ-771 46 Olomouc , Czech Republic
| | - František Zálešák
- Institute of Molecular and Translation Medicine, Faculty of Medicine and Dentistry , Palacký University , Hněvotínská 5 , 779 00 Olomouc , Czech Republic
| | - Jiří Pospíšil
- Department of Organic Chemistry, Faculty of Science , Palacky University , tř. 17. listopadu 1192/12 , CZ-771 46 Olomouc , Czech Republic.,Laboratory of Growth Regulators , Palacký University and Institute of Experimental Botany AS CR , Šlechtitelů 27 , 783 71 Olomouc , Czech Republic
| |
Collapse
|
4
|
Unexpected decarboxamidation of α-arylsulfonyl Weinreb amides by Grignard reagents: Synthesis of α-disubstituted arylsulfones. Chem Res Chin Univ 2017. [DOI: 10.1007/s40242-017-6371-z] [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]
|
5
|
He Z, Tan P, Ni C, Hu J. Fluoroalkylative Aryl Migration of Conjugated N-Arylsulfonylated Amides Using Easily Accessible Sodium Di- and Monofluoroalkanesulfinates. Org Lett 2015; 17:1838-41. [DOI: 10.1021/acs.orglett.5b00308] [Citation(s) in RCA: 144] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Zhengbiao He
- Key Laboratory of Organofluorine
Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Ling-Ling Road, Shanghai 200032, China
| | - Ping Tan
- Key Laboratory of Organofluorine
Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Ling-Ling Road, Shanghai 200032, China
| | - Chuanfa Ni
- Key Laboratory of Organofluorine
Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Ling-Ling Road, Shanghai 200032, China
| | - Jinbo Hu
- Key Laboratory of Organofluorine
Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Ling-Ling Road, Shanghai 200032, China
| |
Collapse
|
6
|
Ni C, Hu M, Hu J. Good partnership between sulfur and fluorine: sulfur-based fluorination and fluoroalkylation reagents for organic synthesis. Chem Rev 2014; 115:765-825. [PMID: 25144886 DOI: 10.1021/cr5002386] [Citation(s) in RCA: 936] [Impact Index Per Article: 93.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Chuanfa Ni
- Key Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences , 345 Ling-Ling Road, Shanghai City, Shanghai 200032, China
| | | | | |
Collapse
|
7
|
Habib S, Larnaud F, Pfund E, Mena Barragán T, Lequeux T, Ortiz Mellet C, Goekjian PG, Gueyrard D. Synthesis of substituted exo-glucals via a modified Julia olefination and identification as selective β-glucosidase inhibitors. Org Biomol Chem 2014; 12:690-9. [DOI: 10.1039/c3ob41926f] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
8
|
Larnaud F, Malassis J, Pfund E, Linclau B, Lequeux T. Ready Synthetic Access to Enantiopure Allylic α(F)-Branched Fluoroalkenes. Org Lett 2013; 15:2450-3. [DOI: 10.1021/ol400917j] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Florent Larnaud
- Laboratoire de Chimie Moleculaire et Thioorganique, UMR CNRS 6507 & FR3038, ENSICAEN, Universite de Caen Basse-Normandie, 6 Boulevard du Marechal Juin, 14050 Caen, France, and Chemistry, University of Southampton, Highfield, Southampton SO17 1BJ, U.K
| | - Julien Malassis
- Laboratoire de Chimie Moleculaire et Thioorganique, UMR CNRS 6507 & FR3038, ENSICAEN, Universite de Caen Basse-Normandie, 6 Boulevard du Marechal Juin, 14050 Caen, France, and Chemistry, University of Southampton, Highfield, Southampton SO17 1BJ, U.K
| | - Emmanuel Pfund
- Laboratoire de Chimie Moleculaire et Thioorganique, UMR CNRS 6507 & FR3038, ENSICAEN, Universite de Caen Basse-Normandie, 6 Boulevard du Marechal Juin, 14050 Caen, France, and Chemistry, University of Southampton, Highfield, Southampton SO17 1BJ, U.K
| | - Bruno Linclau
- Laboratoire de Chimie Moleculaire et Thioorganique, UMR CNRS 6507 & FR3038, ENSICAEN, Universite de Caen Basse-Normandie, 6 Boulevard du Marechal Juin, 14050 Caen, France, and Chemistry, University of Southampton, Highfield, Southampton SO17 1BJ, U.K
| | - Thierry Lequeux
- Laboratoire de Chimie Moleculaire et Thioorganique, UMR CNRS 6507 & FR3038, ENSICAEN, Universite de Caen Basse-Normandie, 6 Boulevard du Marechal Juin, 14050 Caen, France, and Chemistry, University of Southampton, Highfield, Southampton SO17 1BJ, U.K
| |
Collapse
|
9
|
Habib S, Larnaud F, Pfund E, Lequeux T, Fenet B, Goekjian PG, Gueyrard D. Synthesis of Fluorinatedexo-Glycals through Modified Julia Olefination. European J Org Chem 2013. [DOI: 10.1002/ejoc.201201719] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|