1
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Kumar R. Decennary Update on Oxidative-Rearrangement Involving 1,2-Aryl C-C Migration Around Alkenes: Synthetic and Mechanistic Insights. Chem Asian J 2024; 19:e202400053. [PMID: 38741472 DOI: 10.1002/asia.202400053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2024] [Revised: 05/12/2024] [Accepted: 05/13/2024] [Indexed: 05/16/2024]
Abstract
In recent years, numerous methodologies on oxidative rearrangements of alkenes have been investigated, that produce multipurpose synthons and heterocyclic scaffolds of potential applications. The present review focused on recently established methodologies for oxidative transformation via 1,2-aryl migration in alkenes (2013-2023). Special emphasis has been placed on mechanistic pathways to understand the reactivity pattern of different substrates, challenges to enhance selectivity, the key role of different reagents, and effect of different substituents, and how they affect the rearrangement process. Moreover, synthetic limitations and future direction also have been discussed. We believe, this review offers new synthetic and mechanistic insight to develop elegant precursors and approaches to explore the utilization of alkene-based compounds for natural product synthesis and functional materials.
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Affiliation(s)
- Ravinder Kumar
- Department of Chemistry, MMEC, Maharishi Markandeshwar (Deemed to be University), Mullana, Ambala, 133207, Haryana (India
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2
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Ruyet L, Roblick C, Häfliger J, Wang ZX, Stoffels TJ, Daniliuc CG, Gilmour R. Catalytic Ring Expanding Difluorination: An Enantioselective Platform to Access β,β-Difluorinated Carbocycles. Angew Chem Int Ed Engl 2024; 63:e202403957. [PMID: 38482736 DOI: 10.1002/anie.202403957] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2024] [Indexed: 04/11/2024]
Abstract
Cyclic β,β-difluoro-carbonyl compounds have a venerable history as drug discovery leads, but limitations in the synthesis arsenal continue to impede chemical space exploration. This challenge is particularly acute in the arena of fluorinated medium rings where installing the difluoromethylene unit subtly alters the ring conformation by expanding the internal angle (∠C-CF2-C>∠C-CH2-C): this provides a handle to modulate physicochemistry (e.g. pKa). To reconcile this disparity, a highly modular ring expansion has been devised that leverages simple α,β-unsaturated esters and amides, and processes them to one-carbon homologated rings with concomitant geminal difluorination (6 to 10 membered rings, up to 95 % yield). This process is a rare example of the formal difluorination of an internal alkene and is enabled by sequential I(III)-enabled O-activation. Validation of enantioselective catalysis in the generation of unprecedented medium ring scaffolds is reported (up to 93 : 7 e.r.) together with X-ray structural analyses and product derivatization.
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Affiliation(s)
- Louise Ruyet
- University of Münster, Institute for Organic Chemistry, Corrensstraße 36, 48149, Münster, Germany
| | - Christoph Roblick
- University of Münster, Institute for Organic Chemistry, Corrensstraße 36, 48149, Münster, Germany
| | - Joel Häfliger
- University of Münster, Institute for Organic Chemistry, Corrensstraße 36, 48149, Münster, Germany
| | - Zi-Xuan Wang
- University of Münster, Institute for Organic Chemistry, Corrensstraße 36, 48149, Münster, Germany
| | - Tobias Jürgen Stoffels
- University of Münster, Institute for Organic Chemistry, Corrensstraße 36, 48149, Münster, Germany
| | - Constantin G Daniliuc
- University of Münster, Institute for Organic Chemistry, Corrensstraße 36, 48149, Münster, Germany
| | - Ryan Gilmour
- University of Münster, Institute for Organic Chemistry, Corrensstraße 36, 48149, Münster, Germany
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3
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Yu YJ, Schäfer M, Daniliuc CG, Gilmour R. Catalytic, Regioselective 1,4-Fluorodifunctionalization of Dienes. Angew Chem Int Ed Engl 2023; 62:e202214906. [PMID: 36345795 PMCID: PMC10107283 DOI: 10.1002/anie.202214906] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Indexed: 11/09/2022]
Abstract
A catalysis-based regioselective 1,4-fluorofunctionalization of trifluoromethyl substituted 1,3-dienes has been developed to access compact, highly functionalized products. The process allows E,Z-mixed dienes to be processed to a single E-alkene isomer, and leverages an inexpensive and operationally convenient I(I)/I(III) catalysis platform. The first example of catalytic 1,4-difluorination is disclosed and subsequently evolved to enable 1,4-hetero-difunctionalization, which allows δ-fluoro-alcohol and amine derivatives to be forged in a single operation. The protocol is compatible with a variety of nucleophiles including fluoride, nitriles, carboxylic acids, alcohols and even water thereby allowing highly functionalized products, with a stereocenter bearing both C(sp3 )-F and C(sp3 )-CF3 groups, to be generated rapidly. Scalability (up to 3 mmol), and facile post-reaction modifications are demonstrated to underscore the utility of the method in expanding organofluorine chemical space.
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Affiliation(s)
- You-Jie Yu
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstraße 36, 48149, Münster, Germany
| | - Michael Schäfer
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstraße 36, 48149, Münster, Germany
| | - Constantin G Daniliuc
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstraße 36, 48149, Münster, Germany
| | - Ryan Gilmour
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstraße 36, 48149, Münster, Germany
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4
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Diao Z, Feng Y, Zhang J, Wang X, Li H, Ding C, Zhou Z, Li X. Nickel‐Catalyzed Reductive Cross‐Coupling of (Hetero)aryl Halides with 2‐Chloro‐1,1‐difluoroethane: Facile Access to 2,2‐Difluoroethylated Aromatics. ASIAN J ORG CHEM 2022. [DOI: 10.1002/ajoc.202200169] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Zhengzhen Diao
- Shandong University of Technology School of Chemistry and Chemical Engineering CHINA
| | - Yu Feng
- Shandong University of Technology School of Chemistry and Chemical Engineering CHINA
| | - Jida Zhang
- Shandong University of Technology School of Chemistry and Chemical Engineering CHINA
| | - Xin Wang
- Dongyue Fluorosilicone Technology State Key Laboratory of Fluorinated Functional Membrane Materials CHINA
| | - Hansheng Li
- Dongyue Fluorosilicone Technology State Key Laboratory of Fluorinated Functional Membrane Materials CHINA
| | - Chen Ding
- Dongyue Fluorosilicone Technology State Key Laboratory of Fluorinated Functional Membrane Materials CHINA
| | - Zhen Zhou
- Shandong University of Technology School of Chemistry and Chemical Engineering CHINA
| | - Xinjin Li
- Shandong University of Technology School of Chemistry and Chemical Engineering 266 West Xincun Road 255000 Zibo CHINA
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5
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Ren J, Jia MC, Du FH, Zhang C. A general method for one-step synthesis of monofluoroiodane(III) reagents using silver difluoride. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2022.01.070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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6
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Wang Q, Biosca M, Himo F, Szabó KJ. Electrophilic Fluorination of Alkenes via Bora‐Wagner–Meerwein Rearrangement. Access to β‐Difluoroalkyl Boronates. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202109461] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Qiang Wang
- Department of Organic Chemistry Stockholm University Sweden
| | - Maria Biosca
- Department of Organic Chemistry Stockholm University Sweden
| | - Fahmi Himo
- Department of Organic Chemistry Stockholm University Sweden
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7
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Wang Q, Biosca M, Himo F, Szabó KJ. Electrophilic Fluorination of Alkenes via Bora-Wagner-Meerwein Rearrangement. Access to β-Difluoroalkyl Boronates. Angew Chem Int Ed Engl 2021; 60:26327-26331. [PMID: 34613633 PMCID: PMC9299629 DOI: 10.1002/anie.202109461] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Revised: 09/06/2021] [Indexed: 01/26/2023]
Abstract
The electrophilic fluorination of geminal alkyl substituted vinyl‐Bmida derivatives proceeds via bora‐Wagner–Meerwein rearrangement. According to DFT modelling studies this rearrangement occurs with a low activation barrier via a bora‐cyclopropane shaped TS. The Bmida group has a larger migration aptitude than the alkyl moiety in the Wagner–Meerwein rearrangement of the presented electrophilic fluorination reactions.
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Affiliation(s)
- Qiang Wang
- Department of Organic Chemistry, Stockholm University, Sweden
| | - Maria Biosca
- Department of Organic Chemistry, Stockholm University, Sweden
| | - Fahmi Himo
- Department of Organic Chemistry, Stockholm University, Sweden
| | - Kálmán J Szabó
- Department of Organic Chemistry, Stockholm University, Sweden
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8
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Patel M, Desai B, Sheth A, Dholakiya BZ, Naveen T. Recent Advances in Mono‐ and Difunctionalization of Unactivated Olefins. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100666] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Monak Patel
- Department of Chemistry Sardar Vallabhbhai National Institute of Technology Gujarat–Surat 395 007 India
| | - Bhargav Desai
- Department of Chemistry Sardar Vallabhbhai National Institute of Technology Gujarat–Surat 395 007 India
| | - Aakash Sheth
- Department of Chemistry Sardar Vallabhbhai National Institute of Technology Gujarat–Surat 395 007 India
| | - Bharatkumar Z. Dholakiya
- Department of Chemistry Sardar Vallabhbhai National Institute of Technology Gujarat–Surat 395 007 India
| | - Togati Naveen
- Department of Chemistry Sardar Vallabhbhai National Institute of Technology Gujarat–Surat 395 007 India
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9
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Ren J, Du FH, Jia MC, Hu ZN, Chen Z, Zhang C. Ring Expansion Fluorination of Unactivated Cyclopropanes Mediated by a New Monofluoroiodane(III) Reagent. Angew Chem Int Ed Engl 2021; 60:24171-24178. [PMID: 34523779 DOI: 10.1002/anie.202108589] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Revised: 09/03/2021] [Indexed: 11/08/2022]
Abstract
Herein, we report a new strategy for carbon-carbon bond scission and intramolecular ring expansion fluorination of unactivated cyclopropanes, which was accomplished with a new hypervalent fluoroiodane(III) reagent 1. This novel method delivers medicinally relevant 4-fully substituted fluoropiperidines in moderate to high yields with excellent regio- and diastereoselectivity. Reagent 1, which has an N-acetylbenziodazole framework, was readily synthesized via three steps in 76 % overall yield and was characterized by NMR spectroscopy and X-ray crystallography. Owing to the presence of a secondary I⋅⋅⋅O bonding interaction between the λ3 -iodane atom and the carbonyl oxygen of the acetyl group of the N-acetylbenziodazole framework, 1 has excellent stability and can be stored at ambient temperature for 6 months without any detectable decomposition. Density functional theory calculations and experimental studies showed that the reaction proceeds via a carbocation intermediate that readily combines with a fluoride ion to generate the product.
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Affiliation(s)
- Jing Ren
- State Key Laboratory of Elemento-Organic Chemistry, The Research Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, 94 Weijin Road, Tianjin, 300071, China
| | - Feng-Huan Du
- State Key Laboratory of Elemento-Organic Chemistry, The Research Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, 94 Weijin Road, Tianjin, 300071, China
| | - Meng-Cheng Jia
- State Key Laboratory of Elemento-Organic Chemistry, The Research Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, 94 Weijin Road, Tianjin, 300071, China
| | - Ze-Nan Hu
- State Key Laboratory of Elemento-Organic Chemistry, The Research Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, 94 Weijin Road, Tianjin, 300071, China
| | - Ze Chen
- State Key Laboratory of Elemento-Organic Chemistry, The Research Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, 94 Weijin Road, Tianjin, 300071, China
| | - Chi Zhang
- State Key Laboratory of Elemento-Organic Chemistry, The Research Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, 94 Weijin Road, Tianjin, 300071, China
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10
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Ren J, Du F, Jia M, Hu Z, Chen Z, Zhang C. Ring Expansion Fluorination of Unactivated Cyclopropanes Mediated by a New Monofluoroiodane(III) Reagent. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202108589] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Jing Ren
- State Key Laboratory of Elemento-Organic Chemistry The Research Institute of Elemento-Organic Chemistry College of Chemistry Nankai University 94 Weijin Road Tianjin 300071 China
| | - Feng‐Huan Du
- State Key Laboratory of Elemento-Organic Chemistry The Research Institute of Elemento-Organic Chemistry College of Chemistry Nankai University 94 Weijin Road Tianjin 300071 China
| | - Meng‐Cheng Jia
- State Key Laboratory of Elemento-Organic Chemistry The Research Institute of Elemento-Organic Chemistry College of Chemistry Nankai University 94 Weijin Road Tianjin 300071 China
| | - Ze‐Nan Hu
- State Key Laboratory of Elemento-Organic Chemistry The Research Institute of Elemento-Organic Chemistry College of Chemistry Nankai University 94 Weijin Road Tianjin 300071 China
| | - Ze Chen
- State Key Laboratory of Elemento-Organic Chemistry The Research Institute of Elemento-Organic Chemistry College of Chemistry Nankai University 94 Weijin Road Tianjin 300071 China
| | - Chi Zhang
- State Key Laboratory of Elemento-Organic Chemistry The Research Institute of Elemento-Organic Chemistry College of Chemistry Nankai University 94 Weijin Road Tianjin 300071 China
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11
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Neufeld J, Stünkel T, Mück‐Lichtenfeld C, Daniliuc CG, Gilmour R. Synthese von trifluorierten Tetralinen durch I(I)/I(III)‐katalysierte Ringexpansion: programmieren von Konformationen über [CH
2
CH
2
] → [CF
2
CHF] Isosterismus. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202102222] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Jessica Neufeld
- Organisch-Chemisches Institut Westfälische Wilhelms-Universität Münster Corrensstraße 36 48149 Münster Germany
| | - Timo Stünkel
- Organisch-Chemisches Institut Westfälische Wilhelms-Universität Münster Corrensstraße 36 48149 Münster Germany
| | - Christian Mück‐Lichtenfeld
- Organisch-Chemisches Institut Westfälische Wilhelms-Universität Münster Corrensstraße 36 48149 Münster Germany
| | - Constantin G. Daniliuc
- Organisch-Chemisches Institut Westfälische Wilhelms-Universität Münster Corrensstraße 36 48149 Münster Germany
| | - Ryan Gilmour
- Organisch-Chemisches Institut Westfälische Wilhelms-Universität Münster Corrensstraße 36 48149 Münster Germany
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12
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Neufeld J, Stünkel T, Mück‐Lichtenfeld C, Daniliuc CG, Gilmour R. Trifluorinated Tetralins via I(I)/I(III)-Catalysed Ring Expansion: Programming Conformation by [CH 2 CH 2 ] → [CF 2 CHF] Isosterism. Angew Chem Int Ed Engl 2021; 60:13647-13651. [PMID: 33721384 PMCID: PMC8251640 DOI: 10.1002/anie.202102222] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2021] [Revised: 03/12/2021] [Indexed: 12/15/2022]
Abstract
Saturated, fluorinated carbocycles are emerging as important modules for contemporary drug discovery. To expand the current portfolio, the synthesis of novel trifluorinated tetralins has been achieved. Fluorinated methyleneindanes serve as convenient precursors and undergo efficient difluorinative ring expansion with in situ generated p-TolIF2 (>20 examples, up to >95 %). A range of diverse substituents are tolerated under standard catalysis conditions and this is interrogated by Hammett analysis. X-ray analysis indicates a preference for the CH-F bond to occupy a pseudo-axial orientation, consistent with stabilising σC-H →σC-F * interactions. The replacement of the symmetric [CH2 -CH2 ] motif by [CF2 -CHF] removes the conformational degeneracy intrinsic to the parent tetralin scaffold leading to a predictable half-chair. The conformational behavior of this novel structural balance has been investigated by computational analysis and is consistent with stereoelectronic theory.
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Affiliation(s)
- Jessica Neufeld
- Organisch-Chemisches InstitutWestfälische Wilhelms-Universität MünsterCorrensstraße 3648149MünsterGermany
| | - Timo Stünkel
- 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
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13
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Meyer S, Häfliger J, Schäfer M, Molloy JJ, Daniliuc CG, Gilmour R. A Chiral Pentafluorinated Isopropyl Group via Iodine(I)/(III) Catalysis. Angew Chem Int Ed Engl 2021; 60:6430-6434. [PMID: 33427355 PMCID: PMC7986799 DOI: 10.1002/anie.202015946] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 01/08/2021] [Indexed: 12/15/2022]
Abstract
An I(I)/(III) catalysis strategy to construct an enantioenriched fluorinated isostere of the i Pr group is reported. The difluorination of readily accessible α-CF3 -styrenes is enabled by the in situ generation of a chiral ArIF2 species to forge a stereocentre with the substituents F, CH2 F and CF3 (up to 95 %, >20:1 vicinal:geminal difluorination). The replacement of the metabolically labile benzylic proton results in a highly preorganised scaffold as was determined by X-ray crystallography (π→σ* and stereoelectronic gauche σ→σ* interactions). A process of catalyst editing is disclosed in which preliminary validation of enantioselectivity is placed on a structural foundation.
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Affiliation(s)
- Stephanie Meyer
- Organisch Chemisches InstitutWestfälische Wilhelms-Universität MünsterCorrensstraße 3648149MünsterGermany
| | - Joel Häfliger
- Organisch Chemisches InstitutWestfälische Wilhelms-Universität MünsterCorrensstraße 3648149MünsterGermany
| | - Michael Schäfer
- Organisch Chemisches InstitutWestfälische Wilhelms-Universität MünsterCorrensstraße 3648149MünsterGermany
| | - John J. Molloy
- 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
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14
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Meyer S, Häfliger J, Schäfer M, Molloy JJ, Daniliuc CG, Gilmour R. Eine chirale pentafluorierte Isopropylgruppe durch Iod(I)/(III)‐Katalyse. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202015946] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Stephanie Meyer
- Organisch Chemisches Institut Westfälische Wilhelms-Universität Münster Corrensstraße 36 48149 Münster Deutschland
| | - Joel Häfliger
- Organisch Chemisches Institut Westfälische Wilhelms-Universität Münster Corrensstraße 36 48149 Münster Deutschland
| | - Michael Schäfer
- Organisch Chemisches Institut Westfälische Wilhelms-Universität Münster Corrensstraße 36 48149 Münster Deutschland
| | - John J. Molloy
- Organisch Chemisches Institut Westfälische Wilhelms-Universität Münster Corrensstraße 36 48149 Münster Deutschland
| | - Constantin G. Daniliuc
- Organisch Chemisches Institut Westfälische Wilhelms-Universität Münster Corrensstraße 36 48149 Münster Deutschland
| | - Ryan Gilmour
- Organisch Chemisches Institut Westfälische Wilhelms-Universität Münster Corrensstraße 36 48149 Münster Deutschland
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15
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Doobary S, Sedikides AT, Caldora HP, Poole DL, Lennox AJJ. Electrochemical Vicinal Difluorination of Alkenes: Scalable and Amenable to Electron‐Rich Substrates. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201912119] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Sayad Doobary
- School of Chemistry University of Bristol Cantock's Close Bristol BS8 1TS UK
| | - Alexi T. Sedikides
- School of Chemistry University of Bristol Cantock's Close Bristol BS8 1TS UK
| | - Henry P. Caldora
- School of Chemistry University of Bristol Cantock's Close Bristol BS8 1TS UK
| | - Darren L. Poole
- Medicines Design GSK Medicines Research Centre Gunnels Wood Rd Stevenage SG1 2NY UK
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16
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Doobary S, Sedikides AT, Caldora HP, Poole DL, Lennox AJJ. Electrochemical Vicinal Difluorination of Alkenes: Scalable and Amenable to Electron-Rich Substrates. Angew Chem Int Ed Engl 2019; 59:1155-1160. [PMID: 31697872 PMCID: PMC6973232 DOI: 10.1002/anie.201912119] [Citation(s) in RCA: 64] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2019] [Revised: 11/06/2019] [Indexed: 01/16/2023]
Abstract
Fluorinated alkyl groups are important motifs in bioactive compounds, positively influencing pharmacokinetics, potency and conformation. The oxidative difluorination of alkenes represents an important strategy for their preparation, yet current methods are limited in their alkene‐types and tolerance of electron‐rich, readily oxidized functionalities, as well as in their safety and scalability. Herein, we report a method for the difluorination of a number of unactivated alkene‐types that is tolerant of electron‐rich functionality, giving products that are otherwise unattainable. Key to success is the electrochemical generation of a hypervalent iodine mediator using an “ex‐cell” approach, which avoids oxidative substrate decomposition. The more sustainable conditions give good to excellent yields in up to decagram scales.
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Affiliation(s)
- Sayad Doobary
- School of Chemistry, University of Bristol, Cantock's Close, Bristol, BS8 1TS, UK
| | - Alexi T Sedikides
- School of Chemistry, University of Bristol, Cantock's Close, Bristol, BS8 1TS, UK
| | - Henry P Caldora
- School of Chemistry, University of Bristol, Cantock's Close, Bristol, BS8 1TS, UK
| | - Darren L Poole
- Medicines Design, GSK Medicines Research Centre, Gunnels Wood Rd, Stevenage, SG1 2NY, UK
| | - Alastair J J Lennox
- School of Chemistry, University of Bristol, Cantock's Close, Bristol, BS8 1TS, UK
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17
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Liu X, Lin EE, Chen G, Li JL, Liu P, Wang H. Radical Hydroboration and Hydrosilylation of gem-Difluoroalkenes: Synthesis of α-Difluorinated Alkylborons and Alkylsilanes. Org Lett 2019; 21:8454-8458. [PMID: 31600080 DOI: 10.1021/acs.orglett.9b03218] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
A first example of radical hydroboration and hydrosilylation of gem-difluoroalkenes using ABIN as the radical initiator is described. This protocol features good functional group tolerance, operational simplicity, high atom economy, and easy scale-up, enabling efficient assembly of a wide range of α-difluorinated alkylborons and alkylsilanes in moderate to excellent yields. The synthetic utility of these products is demonstrated by further transformation of the C-B bond and C-Si bond into valuable CF2-containing molecules.
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Affiliation(s)
- Xiaozu Liu
- Key Laboratory of Biocatalysis & Chiral Drug Synthesis of Guizhou Province, Generic Drug Research Center of Guizhou Province, School of Pharmacy , Zunyi Medical University , Zunyi 563006 , P.R. China
| | - E Emily Lin
- School of Pharmaceutical Sciences , Sun Yat-sen University , Guangzhou 510006 , P.R. China
| | - Guojun Chen
- Key Laboratory of Biocatalysis & Chiral Drug Synthesis of Guizhou Province, Generic Drug Research Center of Guizhou Province, School of Pharmacy , Zunyi Medical University , Zunyi 563006 , P.R. China
| | - Ji-Lin Li
- School of Pharmaceutical Sciences , Sun Yat-sen University , Guangzhou 510006 , P.R. China
| | - Peijun Liu
- Key Laboratory of Biocatalysis & Chiral Drug Synthesis of Guizhou Province, Generic Drug Research Center of Guizhou Province, School of Pharmacy , Zunyi Medical University , Zunyi 563006 , P.R. China
| | - Honggen Wang
- School of Pharmaceutical Sciences , Sun Yat-sen University , Guangzhou 510006 , P.R. China
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18
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Li X, Chen P, Liu G. Palladium-Catalyzed Intermolecular Arylcarbonylation of Unactivated Alkenes: Incorporation of Bulky Aryl Groups at Room Temperature. Angew Chem Int Ed Engl 2018; 57:15871-15876. [PMID: 30295983 DOI: 10.1002/anie.201810405] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2018] [Indexed: 12/17/2022]
Abstract
A palladium-catalyzed intermolecular arylcarbonylation of unactivated alkenes has been developed. Unsymmetrical diaryliodonium salts (DAISs) were used as arylation reagents, the bulky aryl group (ArL ) of which was exclusively incorporated into the arylcarbonylated products, which contained the ArL group and a carboxylic ester group at the α- and β-carbon position, respectively, of the original terminal C-C double bond. The reaction features excellent chemo- and regioselectivity, high functional-group tolerance, and very mild reaction conditions.
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Affiliation(s)
- Xiang Li
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, China
| | - Pinhong Chen
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, China
| | - Guosheng Liu
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, China
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19
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Lv WX, Li Q, Li JL, Li Z, Lin E, Tan DH, Cai YH, Fan WX, Wang H. gem
-Difluorination of Alkenyl N
-methyliminodiacetyl Boronates: Synthesis of α- and β-Difluorinated Alkylborons. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201810204] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Wen-Xin Lv
- School of Pharmaceutical Sciences; Sun Yat-sen University; Guangzhou 510006 China
| | - Qingjiang Li
- School of Pharmaceutical Sciences; Sun Yat-sen University; Guangzhou 510006 China
| | - Ji-Lin Li
- School of Pharmaceutical Sciences; Sun Yat-sen University; Guangzhou 510006 China
| | - Zhan Li
- School of Pharmaceutical Sciences; Sun Yat-sen University; Guangzhou 510006 China
| | - E Lin
- School of Pharmaceutical Sciences; Sun Yat-sen University; Guangzhou 510006 China
| | - Dong-Hang Tan
- School of Pharmaceutical Sciences; Sun Yat-sen University; Guangzhou 510006 China
| | - Yuan-Hong Cai
- School of Pharmaceutical Sciences; Sun Yat-sen University; Guangzhou 510006 China
| | - Wen-Xin Fan
- School of Pharmaceutical Sciences; Sun Yat-sen University; Guangzhou 510006 China
| | - Honggen Wang
- School of Pharmaceutical Sciences; Sun Yat-sen University; Guangzhou 510006 China
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20
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Lv WX, Li Q, Li JL, Li Z, Lin E, Tan DH, Cai YH, Fan WX, Wang H. gem
-Difluorination of Alkenyl N
-methyliminodiacetyl Boronates: Synthesis of α- and β-Difluorinated Alkylborons. Angew Chem Int Ed Engl 2018; 57:16544-16548. [DOI: 10.1002/anie.201810204] [Citation(s) in RCA: 58] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2018] [Indexed: 11/08/2022]
Affiliation(s)
- Wen-Xin Lv
- School of Pharmaceutical Sciences; Sun Yat-sen University; Guangzhou 510006 China
| | - Qingjiang Li
- School of Pharmaceutical Sciences; Sun Yat-sen University; Guangzhou 510006 China
| | - Ji-Lin Li
- School of Pharmaceutical Sciences; Sun Yat-sen University; Guangzhou 510006 China
| | - Zhan Li
- School of Pharmaceutical Sciences; Sun Yat-sen University; Guangzhou 510006 China
| | - E Lin
- School of Pharmaceutical Sciences; Sun Yat-sen University; Guangzhou 510006 China
| | - Dong-Hang Tan
- School of Pharmaceutical Sciences; Sun Yat-sen University; Guangzhou 510006 China
| | - Yuan-Hong Cai
- School of Pharmaceutical Sciences; Sun Yat-sen University; Guangzhou 510006 China
| | - Wen-Xin Fan
- School of Pharmaceutical Sciences; Sun Yat-sen University; Guangzhou 510006 China
| | - Honggen Wang
- School of Pharmaceutical Sciences; Sun Yat-sen University; Guangzhou 510006 China
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21
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Scheidt F, Schäfer M, Sarie JC, Daniliuc CG, Molloy JJ, Gilmour R. Enantioselective, Catalytic Vicinal Difluorination of Alkenes. Angew Chem Int Ed Engl 2018; 57:16431-16435. [PMID: 30255972 DOI: 10.1002/anie.201810328] [Citation(s) in RCA: 93] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2018] [Indexed: 11/05/2022]
Abstract
The enantioselective, catalytic vicinal difluorination of alkenes is reported by II /IIII catalysis using a novel, C2 -symmetric resorcinol derivative. Catalyst turnover via in situ generation of an ArIIII F2 species is enabled by Selectfluor oxidation and addition of an inexpensive HF-amine complex. The HF:amine ratio employed in this process provides a handle for regioselective orthogonality as a function of Brønsted acidity. Selectivity reversal from the 1,1-difluorination pathway (geminal) to the desired 1,2-difluorination (vicinal) is disclosed (>20:1 in both directions). Validation with electron deficient styrenes facilitates generation of chiral bioisosteres of the venerable CF3 unit that is pervasive in drug discovery (20 examples, up to 94:06 e.r.). An achiral variant of the reaction is also presented using p-TolI (up to >95 % yield).
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Affiliation(s)
- Felix Scheidt
- Organisch Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstraße 40, 48149, Münster, Germany
| | - Michael Schäfer
- Organisch Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstraße 40, 48149, Münster, Germany
| | - Jérôme C Sarie
- Organisch Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstraße 40, 48149, Münster, Germany
| | - Constantin G Daniliuc
- Organisch Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstraße 40, 48149, Münster, Germany
| | - John J Molloy
- Organisch Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstraße 40, 48149, Münster, Germany
| | - Ryan Gilmour
- Organisch Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstraße 40, 48149, Münster, Germany
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22
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Scheidt F, Schäfer M, Sarie JC, Daniliuc CG, Molloy JJ, Gilmour R. Enantioselective, Catalytic Vicinal Difluorination of Alkenes. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201810328] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Felix Scheidt
- Organisch Chemisches Institut; Westfälische Wilhelms-Universität Münster; Corrensstraße 40 48149 Münster Germany
| | - Michael Schäfer
- Organisch Chemisches Institut; Westfälische Wilhelms-Universität Münster; Corrensstraße 40 48149 Münster Germany
| | - Jérôme C. Sarie
- Organisch Chemisches Institut; Westfälische Wilhelms-Universität Münster; Corrensstraße 40 48149 Münster Germany
| | - Constantin G. Daniliuc
- Organisch Chemisches Institut; Westfälische Wilhelms-Universität Münster; Corrensstraße 40 48149 Münster Germany
| | - John J. Molloy
- Organisch Chemisches Institut; Westfälische Wilhelms-Universität Münster; Corrensstraße 40 48149 Münster Germany
| | - Ryan Gilmour
- Organisch Chemisches Institut; Westfälische Wilhelms-Universität Münster; Corrensstraße 40 48149 Münster Germany
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23
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Li X, Chen P, Liu G. Palladium-Catalyzed Intermolecular Arylcarbonylation of Unactivated Alkenes: Incorporation of Bulky Aryl Groups at Room Temperature. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201810405] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Xiang Li
- State Key Laboratory of Organometallic Chemistry; Center for Excellence in Molecular Synthesis; Shanghai Institute of Organic Chemistry; University of Chinese Academy of Sciences; Chinese Academy of Sciences; 345 Lingling Road Shanghai 200032 China
| | - Pinhong Chen
- State Key Laboratory of Organometallic Chemistry; Center for Excellence in Molecular Synthesis; Shanghai Institute of Organic Chemistry; University of Chinese Academy of Sciences; Chinese Academy of Sciences; 345 Lingling Road Shanghai 200032 China
| | - Guosheng Liu
- State Key Laboratory of Organometallic Chemistry; Center for Excellence in Molecular Synthesis; Shanghai Institute of Organic Chemistry; University of Chinese Academy of Sciences; Chinese Academy of Sciences; 345 Lingling Road Shanghai 200032 China
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24
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Xing B, Ni C, Hu J. Hypervalent Iodine(III)-Catalyzed Balz-Schiemann Fluorination under Mild Conditions. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201802466] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Bo Xing
- Key Laboratory of Organofluorine Chemistry; Center for Excellence in Molecular Synthesis; Shanghai Institute of Organic Chemistry; University of Chinese Academy of Sciences; Chinese Academy of Sciences; 345 Ling-Ling Road Shanghai 200032 China
| | - Chuanfa Ni
- Key Laboratory of Organofluorine Chemistry; Center for Excellence in Molecular Synthesis; Shanghai Institute of Organic Chemistry; University of Chinese Academy of Sciences; Chinese Academy of Sciences; 345 Ling-Ling Road Shanghai 200032 China
| | - Jinbo Hu
- Key Laboratory of Organofluorine Chemistry; Center for Excellence in Molecular Synthesis; Shanghai Institute of Organic Chemistry; University of Chinese Academy of Sciences; Chinese Academy of Sciences; 345 Ling-Ling Road Shanghai 200032 China
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25
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Xing B, Ni C, Hu J. Hypervalent Iodine(III)-Catalyzed Balz-Schiemann Fluorination under Mild Conditions. Angew Chem Int Ed Engl 2018; 57:9896-9900. [PMID: 29932480 DOI: 10.1002/anie.201802466] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2018] [Revised: 05/19/2018] [Indexed: 12/16/2022]
Abstract
An unprecedented hypervalent iodine(III) catalyzed Balz-Schiemann reaction is described. In the presence of a hypervalent iodine compound, the fluorination reaction proceeds under mild conditions (25-60 °C), and features a wide substrate scope and good functional-group compatibility.
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Affiliation(s)
- Bo Xing
- Key Laboratory of Organofluorine Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Ling-Ling Road, Shanghai, 200032, China
| | - Chuanfa Ni
- Key Laboratory of Organofluorine Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Ling-Ling Road, Shanghai, 200032, China
| | - Jinbo Hu
- Key Laboratory of Organofluorine Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Ling-Ling Road, Shanghai, 200032, China
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26
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Hokamp T, Mollari L, Wilkins LC, Melen RL, Wirth T. Alternative Strategies with Iodine: Fast Access to Previously Inaccessible Iodine(III) Compounds. Angew Chem Int Ed Engl 2018; 57:8306-8309. [DOI: 10.1002/anie.201804642] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2018] [Revised: 05/08/2018] [Indexed: 11/07/2022]
Affiliation(s)
- Tobias Hokamp
- School of ChemistryCardiff University Main Building, Park Place Cardiff CF10 3AT UK
| | - Leonardo Mollari
- School of ChemistryCardiff University Main Building, Park Place Cardiff CF10 3AT UK
| | - Lewis C. Wilkins
- School of ChemistryCardiff University Main Building, Park Place Cardiff CF10 3AT UK
| | - Rebecca L. Melen
- School of ChemistryCardiff University Main Building, Park Place Cardiff CF10 3AT UK
| | - Thomas Wirth
- School of ChemistryCardiff University Main Building, Park Place Cardiff CF10 3AT UK
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27
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Hokamp T, Mollari L, Wilkins LC, Melen RL, Wirth T. Alternative Strategien mit Iod: schneller Zugang zu bisher unzugänglichen Iod(III)‐Verbindungen. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201804642] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Tobias Hokamp
- School of ChemistryCardiff University Main Building, Park Place Cardiff CF10 3AT Großbritannien
| | - Leonardo Mollari
- School of ChemistryCardiff University Main Building, Park Place Cardiff CF10 3AT Großbritannien
| | - Lewis C. Wilkins
- School of ChemistryCardiff University Main Building, Park Place Cardiff CF10 3AT Großbritannien
| | - Rebecca L. Melen
- School of ChemistryCardiff University Main Building, Park Place Cardiff CF10 3AT Großbritannien
| | - Thomas Wirth
- School of ChemistryCardiff University Main Building, Park Place Cardiff CF10 3AT Großbritannien
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28
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Brunner C, Andries-Ulmer A, Kiefl GM, Gulder T. Hypervalent Fluoroiodane-Triggered Synthesis of Fluoro-Azabenzoxazepines and Azaindoles. European J Org Chem 2018. [DOI: 10.1002/ejoc.201800129] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Christoph Brunner
- Department of Chemistry and Catalysis Research Center (CRC); Technical University Munich; Lichtenbergstrasse 4 85748 Garching Germany
| | - Anna Andries-Ulmer
- Department of Chemistry and Catalysis Research Center (CRC); Technical University Munich; Lichtenbergstrasse 4 85748 Garching Germany
| | - Gabriel M. Kiefl
- Department of Chemistry and Catalysis Research Center (CRC); Technical University Munich; Lichtenbergstrasse 4 85748 Garching Germany
| | - Tanja Gulder
- Department of Chemistry and Catalysis Research Center (CRC); Technical University Munich; Lichtenbergstrasse 4 85748 Garching Germany
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29
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Yan SY, Zhang ZZ, Liu YH, Liao G, Li PX, Shi BF. Copper-Catalyzed C−H Ethoxycarbonyldifluoromethylation of Indoles and Pyrroles. ASIAN J ORG CHEM 2018. [DOI: 10.1002/ajoc.201800166] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Sheng-Yi Yan
- Department of Chemistry; Zhejiang University; Hangzhou 310027 People's Republic of China
| | - Zhuo-Zhuo Zhang
- Department of Chemistry; Zhejiang University; Hangzhou 310027 People's Republic of China
| | - Yan-Hua Liu
- Department of Chemistry; Zhejiang University; Hangzhou 310027 People's Republic of China
| | - Gang Liao
- Department of Chemistry; Zhejiang University; Hangzhou 310027 People's Republic of China
| | - Peng-Xiang Li
- School of Chemical & Environmental Engineering; Wuyi University; Jiangmen 529020 People's Republic of China
| | - Bing-Feng Shi
- Department of Chemistry; Zhejiang University; Hangzhou 310027 People's Republic of China
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30
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Qi X, Yu F, Chen P, Liu G. Intermolecular Palladium‐Catalyzed Oxidative Fluorocarbonylation of Unactivated Alkenes: Efficient Access to β‐Fluorocarboxylic Esters. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201706401] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Xiaoxu Qi
- State Key Laboratory of Organometallic Chemistry Shanghai Institute of Organic Chemistry University of Chinese Academy of Sciences Chinese Academy of Sciences 345 Lingling Road Shanghai 200032 China
| | - Feng Yu
- State Key Laboratory of Organometallic Chemistry Shanghai Institute of Organic Chemistry University of Chinese Academy of Sciences Chinese Academy of Sciences 345 Lingling Road Shanghai 200032 China
| | - Pinhong Chen
- State Key Laboratory of Organometallic Chemistry Shanghai Institute of Organic Chemistry University of Chinese Academy of Sciences Chinese Academy of Sciences 345 Lingling Road Shanghai 200032 China
| | - Guosheng Liu
- State Key Laboratory of Organometallic Chemistry Shanghai Institute of Organic Chemistry University of Chinese Academy of Sciences Chinese Academy of Sciences 345 Lingling Road Shanghai 200032 China
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31
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Qi X, Yu F, Chen P, Liu G. Intermolecular Palladium‐Catalyzed Oxidative Fluorocarbonylation of Unactivated Alkenes: Efficient Access to β‐Fluorocarboxylic Esters. Angew Chem Int Ed Engl 2017; 56:12692-12696. [DOI: 10.1002/anie.201706401] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2017] [Revised: 07/25/2017] [Indexed: 12/15/2022]
Affiliation(s)
- Xiaoxu Qi
- State Key Laboratory of Organometallic Chemistry Shanghai Institute of Organic Chemistry University of Chinese Academy of Sciences Chinese Academy of Sciences 345 Lingling Road Shanghai 200032 China
| | - Feng Yu
- State Key Laboratory of Organometallic Chemistry Shanghai Institute of Organic Chemistry University of Chinese Academy of Sciences Chinese Academy of Sciences 345 Lingling Road Shanghai 200032 China
| | - Pinhong Chen
- State Key Laboratory of Organometallic Chemistry Shanghai Institute of Organic Chemistry University of Chinese Academy of Sciences Chinese Academy of Sciences 345 Lingling Road Shanghai 200032 China
| | - Guosheng Liu
- State Key Laboratory of Organometallic Chemistry Shanghai Institute of Organic Chemistry University of Chinese Academy of Sciences Chinese Academy of Sciences 345 Lingling Road Shanghai 200032 China
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32
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Zhao Z, Racicot L, Murphy GK. Fluorinative Rearrangements of Substituted Phenylallenes Mediated by (Difluoroiodo)toluene: Synthesis of α-(Difluoromethyl)styrenes. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201706798] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Zhensheng Zhao
- Department of Chemistry; University of Waterloo; 200 University Ave. W Waterloo ON N2L3G1 Canada
| | - Léanne Racicot
- Department of Chemistry; University of Waterloo; 200 University Ave. W Waterloo ON N2L3G1 Canada
| | - Graham K. Murphy
- Department of Chemistry; University of Waterloo; 200 University Ave. W Waterloo ON N2L3G1 Canada
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33
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Zhao Z, Racicot L, Murphy GK. Fluorinative Rearrangements of Substituted Phenylallenes Mediated by (Difluoroiodo)toluene: Synthesis of α-(Difluoromethyl)styrenes. Angew Chem Int Ed Engl 2017; 56:11620-11623. [DOI: 10.1002/anie.201706798] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2017] [Indexed: 11/08/2022]
Affiliation(s)
- Zhensheng Zhao
- Department of Chemistry; University of Waterloo; 200 University Ave. W Waterloo ON N2L3G1 Canada
| | - Léanne Racicot
- Department of Chemistry; University of Waterloo; 200 University Ave. W Waterloo ON N2L3G1 Canada
| | - Graham K. Murphy
- Department of Chemistry; University of Waterloo; 200 University Ave. W Waterloo ON N2L3G1 Canada
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34
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Alazet S, Le Vaillant F, Nicolai S, Courant T, Waser J. Divergent Access to (1,1) and (1,2)‐Azidolactones from Alkenes using Hypervalent Iodine Reagents. Chemistry 2017; 23:9501-9504. [DOI: 10.1002/chem.201702599] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2017] [Indexed: 12/25/2022]
Affiliation(s)
- Sébastien Alazet
- Laboratory of Catalysis and Organic SynthesisEcole Polytechnique Fédérale de Lausanne, EPFL SB ISIC LCSO, BCH 4306 1015 Lausanne Switzerland
| | - Franck Le Vaillant
- Laboratory of Catalysis and Organic SynthesisEcole Polytechnique Fédérale de Lausanne, EPFL SB ISIC LCSO, BCH 4306 1015 Lausanne Switzerland
| | - Stefano Nicolai
- Laboratory of Catalysis and Organic SynthesisEcole Polytechnique Fédérale de Lausanne, EPFL SB ISIC LCSO, BCH 4306 1015 Lausanne Switzerland
| | - Thibaut Courant
- Laboratory of Catalysis and Organic SynthesisEcole Polytechnique Fédérale de Lausanne, EPFL SB ISIC LCSO, BCH 4306 1015 Lausanne Switzerland
- Current address: Laboratoire COBRA–Bâtiment IRCOF UMR 6014, CNRS-INSAUniversité de Rouen 1 Rue Tesnière 76281 Mont-Saint-Aignan Cedex France
| | - Jerome Waser
- Laboratory of Catalysis and Organic SynthesisEcole Polytechnique Fédérale de Lausanne, EPFL SB ISIC LCSO, BCH 4306 1015 Lausanne Switzerland
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35
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Kálmán J. Szabó. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201611954] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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36
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Kálmán J. Szabó. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/anie.201611954] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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37
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Yu X, Ge B, Zhang Y, Wang X, Wang D. Silver-Mediated Phosphonylation of C(sp2)−H Bonds with P−H Bonds: Direct C−H Functionalization of Ferrocenyl Anilides and Dialkyl Phosphites under Palladium- and Copper-Free Conditions. ASIAN J ORG CHEM 2016. [DOI: 10.1002/ajoc.201600296] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Xiaoli Yu
- The Key Laboratory of Food Colloids and Biotechnology, Ministry of Education; School of Chemical and Material Engineering; Jiangnan University; 1800 Lihu Road Wuxi Jiangsu Province 214122 China
| | - Bingyang Ge
- The Key Laboratory of Food Colloids and Biotechnology, Ministry of Education; School of Chemical and Material Engineering; Jiangnan University; 1800 Lihu Road Wuxi Jiangsu Province 214122 China
| | - Yaxuan Zhang
- The Key Laboratory of Food Colloids and Biotechnology, Ministry of Education; School of Chemical and Material Engineering; Jiangnan University; 1800 Lihu Road Wuxi Jiangsu Province 214122 China
| | - Xiaoli Wang
- The Key Laboratory of Food Colloids and Biotechnology, Ministry of Education; School of Chemical and Material Engineering; Jiangnan University; 1800 Lihu Road Wuxi Jiangsu Province 214122 China
| | - Dawei Wang
- The Key Laboratory of Food Colloids and Biotechnology, Ministry of Education; School of Chemical and Material Engineering; Jiangnan University; 1800 Lihu Road Wuxi Jiangsu Province 214122 China
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38
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Yuan W, Eriksson L, Szabó KJ. Rhodium-Catalyzed Geminal Oxyfluorination and Oxytrifluoro-Methylation of Diazocarbonyl Compounds. Angew Chem Int Ed Engl 2016; 55:8410-5. [PMID: 27219856 PMCID: PMC5089581 DOI: 10.1002/anie.201602137] [Citation(s) in RCA: 108] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2016] [Revised: 04/01/2016] [Indexed: 11/06/2022]
Abstract
A new reaction for the rhodium-catalyzed geminal-difunctionalization-based fluorination is presented. The substrates are aromatic and aliphatic diazocarbonyl compounds. As the fluorine source a stable and easily accessible benziodoxole reagent was used. A variety of alcohol, phenol, and carboxylic acid reagents were employed to introduce the second functionality. The reaction was extended to trifluoromethylation using a benziodoxolon reagent. The fluorination and trifluoromethylation reactions probably proceed by a rhodium-containing onium ylide type intermediate, which is trapped by either the F or CF3 electrophiles.
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Affiliation(s)
- Weiming Yuan
- Department of Organic Chemistry, Stockholm University, Sweden
| | - Lars Eriksson
- Department of Materials and Environmental Chemistry, Stockholm University, Sweden
| | - Kálmán J Szabó
- Department of Organic Chemistry, Stockholm University, Sweden.
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39
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Yuan W, Eriksson L, Szabó KJ. Rhodium-Catalyzed Geminal Oxyfluorination and Oxytrifluoro-Methylation of Diazocarbonyl Compounds. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201602137] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Weiming Yuan
- Department of Organic Chemistry; Stockholm University; Sweden
| | - Lars Eriksson
- Department of Materials and Environmental Chemistry; Stockholm University; Sweden
| | - Kálmán J. Szabó
- Department of Organic Chemistry; Stockholm University; Sweden
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40
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Arnold AM, Ulmer A, Gulder T. Advances in Iodine(III)-Mediated Halogenations: A Versatile Tool to Explore New Reactivities and Selectivities. Chemistry 2016; 22:8728-39. [DOI: 10.1002/chem.201600449] [Citation(s) in RCA: 66] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2016] [Indexed: 01/13/2023]
Affiliation(s)
- Andreas M. Arnold
- Department Chemie and Catalysis Research Center (CRC); Technische Universität München; Lichtenbergstrasse 4 85747 Garching Germany
| | - Anna Ulmer
- Department Chemie and Catalysis Research Center (CRC); Technische Universität München; Lichtenbergstrasse 4 85747 Garching Germany
| | - Tanja Gulder
- Department Chemie and Catalysis Research Center (CRC); Technische Universität München; Lichtenbergstrasse 4 85747 Garching Germany
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41
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Li Y, Hari DP, Vita MV, Waser J. Cyclic Hypervalent Iodine Reagents for Atom-Transfer Reactions: Beyond Trifluoromethylation. Angew Chem Int Ed Engl 2016; 55:4436-54. [DOI: 10.1002/anie.201509073] [Citation(s) in RCA: 272] [Impact Index Per Article: 34.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2015] [Indexed: 12/18/2022]
Affiliation(s)
- Yifan Li
- Laboratory of Catalysis and Organic Synthesis; Ecole Polytechnique Fédérale de Lausanne, EPFL SB ISIC LCSO; BCH 4306 1015 Lausanne CH Switzerland
| | - Durga Prasad Hari
- Laboratory of Catalysis and Organic Synthesis; Ecole Polytechnique Fédérale de Lausanne, EPFL SB ISIC LCSO; BCH 4306 1015 Lausanne CH Switzerland
| | - Maria Victoria Vita
- Laboratory of Catalysis and Organic Synthesis; Ecole Polytechnique Fédérale de Lausanne, EPFL SB ISIC LCSO; BCH 4306 1015 Lausanne CH Switzerland
| | - Jerome Waser
- Laboratory of Catalysis and Organic Synthesis; Ecole Polytechnique Fédérale de Lausanne, EPFL SB ISIC LCSO; BCH 4306 1015 Lausanne CH Switzerland
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42
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Li Y, Hari DP, Vita MV, Waser J. Cyclische hypervalente Iodreagentien für Atomtransferreaktionen - jenseits der Trifluormethylierung. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201509073] [Citation(s) in RCA: 98] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Yifan Li
- Laboratory of Catalysis and Organic Synthesis; Ecole Polytechnique Fédérale de Lausanne, EPFL SB ISIC LCSO; BCH 4306 1015 Lausanne CH Schweiz
| | - Durga Prasad Hari
- Laboratory of Catalysis and Organic Synthesis; Ecole Polytechnique Fédérale de Lausanne, EPFL SB ISIC LCSO; BCH 4306 1015 Lausanne CH Schweiz
| | - Maria Victoria Vita
- Laboratory of Catalysis and Organic Synthesis; Ecole Polytechnique Fédérale de Lausanne, EPFL SB ISIC LCSO; BCH 4306 1015 Lausanne CH Schweiz
| | - Jerome Waser
- Laboratory of Catalysis and Organic Synthesis; Ecole Polytechnique Fédérale de Lausanne, EPFL SB ISIC LCSO; BCH 4306 1015 Lausanne CH Schweiz
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43
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Ulmer A, Brunner C, Arnold AM, Pöthig A, Gulder T. A Fluorination/Aryl Migration/Cyclization Cascade for the Metal-Free Synthesis of Fluoro-Benzoxazepines. Chemistry 2015; 22:3660-4. [PMID: 26641801 DOI: 10.1002/chem.201504749] [Citation(s) in RCA: 73] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2015] [Indexed: 11/09/2022]
Abstract
Fluorinated organic molecules are of high interest for many applications across chemical and medical disciplines. Efficient methods for the synthesis of such compounds are thus needed. Within this work, application of the bench-stable cyclic hypervalent iodine(III) fluoro reagent 1 facilitated the development of an efficient, metal-free method for the preparation of the novel class of 4-fluoro-1,3-benzoxazepines starting from readily available styrenes. The efficacy and broad applicability of this concept is demonstrated by the synthesis of 20 structurally diverse congeners in high yields, regio-, and diastereoselectivities. The presented method provides complementary chemoselectivity when compared to the common, commercially available electrophilic fluorination reagents, such as selectfluor. First mechanistic investigations with isotopically labeled substrates reveal a complex reaction mechanism, proceeding via an unusual fluorination/1,2-aryl migration/cyclization cascade.
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Affiliation(s)
- Anna Ulmer
- Department Chemie and Catalysis Research Center (CRC), Technische Universität München, Lichtenbergstrasse 4, 85747, Garching, Germany
| | - Christoph Brunner
- Department Chemie and Catalysis Research Center (CRC), Technische Universität München, Lichtenbergstrasse 4, 85747, Garching, Germany
| | - Andreas M Arnold
- Department Chemie and Catalysis Research Center (CRC), Technische Universität München, Lichtenbergstrasse 4, 85747, Garching, Germany
| | - Alexander Pöthig
- Department Chemie and Catalysis Research Center (CRC), Technische Universität München, Lichtenbergstrasse 4, 85747, Garching, Germany
| | - Tanja Gulder
- Department Chemie and Catalysis Research Center (CRC), Technische Universität München, Lichtenbergstrasse 4, 85747, Garching, Germany.
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44
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Macé A, Touchet S, Andres P, Cossío F, Dorcet V, Carreaux F, Carboni B. [3,3]-Sigmatropic Rearrangement/Allylboration/Cyclization Sequence: Enantioenriched Seven-Membered-Ring Carbamates and Ring Contraction to Pyrrolidines. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201509824] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Aurélie Macé
- Institut des Sciences Chimiques de Rennes; UMR 6226 CNRS-Université de Rennes 1; Campus de Beaulieu 35042 Rennes Cedex France
| | - Sabrina Touchet
- Institut des Sciences Chimiques de Rennes; UMR 6226 CNRS-Université de Rennes 1; Campus de Beaulieu 35042 Rennes Cedex France
- AdPueriVitam; Laboratoire BioCIS; Faculté de Pharmacie; Université Paris-Sud; 5 rue J-B Clément 92296 Châtenay-Malabry France
| | - Patricia Andres
- Institut des Sciences Chimiques de Rennes; UMR 6226 CNRS-Université de Rennes 1; Campus de Beaulieu 35042 Rennes Cedex France
- Departamento de Química Orgánica, Facultad de Ciencias; Universidad de Zaragoza; Pedro Cerbuna 12 50009 Zaragoza Spain
| | - Fernando Cossío
- Departamento de Química Orgánica I; Facultad de Química; Universidad del País Vasco/Euskal Herriko Unibertsitatea (UPV/EHU); Donostia International Physics Center (DIPC); P° Manuel Lardizabal 3 20018 San Sebastián/Donostia Spain
| | - Vincent Dorcet
- Institut des Sciences Chimiques de Rennes; UMR 6226 CNRS-Université de Rennes 1; Campus de Beaulieu 35042 Rennes Cedex France
| | - François Carreaux
- Institut des Sciences Chimiques de Rennes; UMR 6226 CNRS-Université de Rennes 1; Campus de Beaulieu 35042 Rennes Cedex France
| | - Bertrand Carboni
- Institut des Sciences Chimiques de Rennes; UMR 6226 CNRS-Université de Rennes 1; Campus de Beaulieu 35042 Rennes Cedex France
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45
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Macé A, Touchet S, Andres P, Cossío F, Dorcet V, Carreaux F, Carboni B. [3,3]-Sigmatropic Rearrangement/Allylboration/Cyclization Sequence: Enantioenriched Seven-Membered-Ring Carbamates and Ring Contraction to Pyrrolidines. Angew Chem Int Ed Engl 2015; 55:1025-9. [DOI: 10.1002/anie.201509824] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2015] [Indexed: 12/25/2022]
Affiliation(s)
- Aurélie Macé
- Institut des Sciences Chimiques de Rennes; UMR 6226 CNRS-Université de Rennes 1; Campus de Beaulieu 35042 Rennes Cedex France
| | - Sabrina Touchet
- Institut des Sciences Chimiques de Rennes; UMR 6226 CNRS-Université de Rennes 1; Campus de Beaulieu 35042 Rennes Cedex France
- AdPueriVitam; Laboratoire BioCIS; Faculté de Pharmacie; Université Paris-Sud; 5 rue J-B Clément 92296 Châtenay-Malabry France
| | - Patricia Andres
- Institut des Sciences Chimiques de Rennes; UMR 6226 CNRS-Université de Rennes 1; Campus de Beaulieu 35042 Rennes Cedex France
- Departamento de Química Orgánica, Facultad de Ciencias; Universidad de Zaragoza; Pedro Cerbuna 12 50009 Zaragoza Spain
| | - Fernando Cossío
- Departamento de Química Orgánica I; Facultad de Química; Universidad del País Vasco/Euskal Herriko Unibertsitatea (UPV/EHU); Donostia International Physics Center (DIPC); P° Manuel Lardizabal 3 20018 San Sebastián/Donostia Spain
| | - Vincent Dorcet
- Institut des Sciences Chimiques de Rennes; UMR 6226 CNRS-Université de Rennes 1; Campus de Beaulieu 35042 Rennes Cedex France
| | - François Carreaux
- Institut des Sciences Chimiques de Rennes; UMR 6226 CNRS-Université de Rennes 1; Campus de Beaulieu 35042 Rennes Cedex France
| | - Bertrand Carboni
- Institut des Sciences Chimiques de Rennes; UMR 6226 CNRS-Université de Rennes 1; Campus de Beaulieu 35042 Rennes Cedex France
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46
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Geary GC, Hope EG, Stuart AM. Intramolecular Fluorocyclizations of Unsaturated Carboxylic Acids with a Stable Hypervalent Fluoroiodane Reagent. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201507790] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
| | | | - Alison M. Stuart
- Department of Chemistry, University of Leicester, Leicester, LE1 7RH (UK)
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47
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Geary GC, Hope EG, Stuart AM. Intramolecular Fluorocyclizations of Unsaturated Carboxylic Acids with a Stable Hypervalent Fluoroiodane Reagent. Angew Chem Int Ed Engl 2015; 54:14911-4. [DOI: 10.1002/anie.201507790] [Citation(s) in RCA: 77] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2015] [Indexed: 12/27/2022]
Affiliation(s)
| | | | - Alison M. Stuart
- Department of Chemistry, University of Leicester, Leicester, LE1 7RH (UK)
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48
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Saulnier S, Ciardi M, Lopez-Carrillo V, Gualandi A, Cozzi PG. A Versatile Organocatalytic Approach for the Synthesis of Enantioenriched gem-Difluorinated Compounds. Chemistry 2015; 21:13689-95. [PMID: 26239866 DOI: 10.1002/chem.201502099] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2015] [Indexed: 11/11/2022]
Abstract
The combination of a practical and highly enantioselective organocatalytic reaction, which allows the stereoselective introduction of a benzodithiol group, with a fluorination step, gives a new and effective strategy for the stereoselective synthesis of difluorinated building blocks. The benzodithiol group is a versatile and chameleonic group that can be further functionalized before fluorination, giving customized and tailored useful synthetic strategies. As an example of the application of this facile strategy, the effective enantioselective synthesis of difluoroarundic acid is described.
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Affiliation(s)
- Steve Saulnier
- Dipartimento di Chimica "G. Ciamician", ALMA MATER STUDIORUM, Università di Bologna, Via A. Selmi 2, 40126, Bologna (Italy)
| | - Moira Ciardi
- Dipartimento di Chimica "G. Ciamician", ALMA MATER STUDIORUM, Università di Bologna, Via A. Selmi 2, 40126, Bologna (Italy).,Université catholique de Louvain, Institute of Condensed Matter and Nanosciences, Croix du Sud, 1 bte L7.04.02, room a.241, 1348 Louvain-la-Neuve (Belgium)
| | - Veronica Lopez-Carrillo
- Dipartimento di Chimica "G. Ciamician", ALMA MATER STUDIORUM, Università di Bologna, Via A. Selmi 2, 40126, Bologna (Italy)
| | - Andrea Gualandi
- Dipartimento di Chimica "G. Ciamician", ALMA MATER STUDIORUM, Università di Bologna, Via A. Selmi 2, 40126, Bologna (Italy)
| | - Pier Giorgio Cozzi
- Dipartimento di Chimica "G. Ciamician", ALMA MATER STUDIORUM, Università di Bologna, Via A. Selmi 2, 40126, Bologna (Italy).
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49
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Yuan W, Szabó KJ. Catalytic Intramolecular Aminofluorination, Oxyfluorination, and Carbofluorination with a Stable and Versatile Hypervalent Fluoroiodine Reagent. Angew Chem Int Ed Engl 2015; 54:8533-7. [PMID: 26069071 PMCID: PMC4531827 DOI: 10.1002/anie.201503373] [Citation(s) in RCA: 99] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2015] [Indexed: 02/04/2023]
Abstract
Application of a fluoroiodine analogue of the Togni reagent was studied in fluorocyclization reactions. In the presence of a transition-metal catalyst the applied fluoroiodine reagent can be used for aminofluorination, oxyfluorination, and carbofluorination reactions. The described procedure has a very broad synthetic scope for preparation of functionalized hetero- and isocyclic compounds having a tertiary fluorine substituent.
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Affiliation(s)
- Weiming Yuan
- Department of Organic Chemistry, Stockholm University (Sweden) http://www.organ.su.se/ks/
| | - Kálmán J Szabó
- Department of Organic Chemistry, Stockholm University (Sweden) http://www.organ.su.se/ks/.
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50
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Yuan W, Szabó KJ. Catalytic Intramolecular Aminofluorination, Oxyfluorination, and Carbofluorination with a Stable and Versatile Hypervalent Fluoroiodine Reagent. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201503373] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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