1
|
Qiao H, Michalland J, Huang Q, Zard SZ. A Versatile Route to Acyl (MIDA)Boronates. Chemistry 2023; 29:e202302235. [PMID: 37477346 DOI: 10.1002/chem.202302235] [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: 07/18/2023] [Revised: 07/21/2023] [Accepted: 07/21/2023] [Indexed: 07/22/2023]
Abstract
A modular approach to highly functional acyl (MIDA)boronates is described. It involves the generation of the hitherto unknown radical derived from acetyl (MIDA)boronate and its capture by various alkenes, including electronically unbiased, unactivated alkenes. In contrast to the anion of acetyl (MIDA)boronate, which has not so far been employed in synthesis, the corresponding radical is well behaved and readily produced from the novel α-xanthyl acetyl (MIDA)boronate. This shelf-stable, easily prepared solid is a convenient acyl (MIDA)boronate transfer agent that provides a direct entry to numerous otherwise inaccessible structures, including latent 1,4-dicarbonyl derivatives that can be transformed into B(MIDA) substituted pyrroles and furans. A competition experiment indicated the acyl (MIDA)boronate substituted radical to be more stable than the all-carbon acetonyl radical but somewhat less reactive in additions to alkenes.
Collapse
Affiliation(s)
- Hui Qiao
- Laboratoire de Synthèse Organique, CNRS UMR 7652, Ecole polytechnique, 91128, Palaiseau Cedex, France
| | - Jean Michalland
- Laboratoire de Synthèse Organique, CNRS UMR 7652, Ecole polytechnique, 91128, Palaiseau Cedex, France
| | - Qi Huang
- Laboratoire de Synthèse Organique, CNRS UMR 7652, Ecole polytechnique, 91128, Palaiseau Cedex, France
| | - Samir Z Zard
- Laboratoire de Synthèse Organique, CNRS UMR 7652, Ecole polytechnique, 91128, Palaiseau Cedex, France
| |
Collapse
|
2
|
Zhang X, Friedrich A, Marder TB. Copper-Catalyzed Borylation of Acyl Chlorides with an Alkoxy Diboron Reagent: A Facile Route to Acylboron Compounds. Chemistry 2022; 28:e202201329. [PMID: 35510606 PMCID: PMC9400893 DOI: 10.1002/chem.202201329] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Indexed: 12/15/2022]
Abstract
Herein, the copper‐catalyzed borylation of readily available acyl chlorides with bis(pinacolato)diboron, (B2pin2) or bis(neopentane glycolato)diboron (B2neop2) is reported, which provides stable potassium acyltrifluoroborates (KATs) in good yields from the acylboronate esters. A variety of functional groups are tolerated under the mild reaction conditions (room temperature) and substrates containing different carbon‐skeletons, such as aryl, heteroaryl and primary, secondary, tertiary alkyl are applicable. Acyl N‐methyliminodiacetic acid (MIDA) boronates can also been accessed by modification of the workup procedures. This process is scalable and also amenable to the late‐stage conversion of carboxylic acid‐containing drugs into their acylboron analogues, which have been challenging to prepare previously. A catalytic mechanism is proposed based on in situ monitoring of the reaction between p‐toluoyl chloride and an NHC‐copper(I) boryl complex as well as the isolation of an unusual lithium acylBpinOBpin compound as a key intermediate.
Collapse
Affiliation(s)
- Xiaolei Zhang
- Institut für Anorganische Chemie and Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - Alexandra Friedrich
- Institut für Anorganische Chemie and Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - Todd B Marder
- Institut für Anorganische Chemie and Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
| |
Collapse
|
3
|
Tung P, Schuhmacher A, Schilling PE, Bode JW, Mankad NP. Preparation of Potassium Acyltrifluoroborates (KATs) from Carboxylic Acids by Copper‐Catalyzed Borylation of Mixed Anhydrides**. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202114513] [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]
Affiliation(s)
- Pinku Tung
- Department of Chemistry University of Illinois at Chicago 845 W. Taylor St. Chicago Il 60607 USA
| | - Anne Schuhmacher
- Laboratory of Organic Chemistry ETH Zurich Vladimir-Prelog-Weg 3 8093 Zurich Switzerland
| | - Philipp E. Schilling
- Laboratory of Organic Chemistry ETH Zurich Vladimir-Prelog-Weg 3 8093 Zurich Switzerland
| | - Jeffrey W. Bode
- Laboratory of Organic Chemistry ETH Zurich Vladimir-Prelog-Weg 3 8093 Zurich Switzerland
| | - Neal P. Mankad
- Department of Chemistry University of Illinois at Chicago 845 W. Taylor St. Chicago Il 60607 USA
| |
Collapse
|
4
|
Tung P, Schuhmacher A, Schilling PE, Bode JW, Mankad NP. Preparation of Potassium Acyltrifluoroborates (KATs) from Carboxylic Acids by Copper-Catalyzed Borylation of Mixed Anhydrides. Angew Chem Int Ed Engl 2021; 61:e202114513. [PMID: 34913236 DOI: 10.1002/anie.202114513] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Indexed: 12/28/2022]
Abstract
We report the preparation of potassium acyltrifluoroborates (KATs) from widely available carboxylic acids. Mixed anhydrides of carboxylic acids were prepared using isobutyl chloroformate and transformed to the corresponding KATs using a commercial copper catalyst, B2 (pin)2 , and aqueous KHF2 . This method allows for the facile preparation of aliphatic, aromatic, and amino acid-derived KATs and is compatible with a variety of functional groups including alkenes, esters, halides, nitriles, and protected amines.
Collapse
Affiliation(s)
- Pinku Tung
- Department of Chemistry, University of Illinois at Chicago, 845 W. Taylor St., Chicago, Il 60607, USA
| | - Anne Schuhmacher
- Laboratory of Organic Chemistry, ETH Zurich, Vladimir-Prelog-Weg 3, 8093, Zurich, Switzerland
| | - Philipp E Schilling
- Laboratory of Organic Chemistry, ETH Zurich, Vladimir-Prelog-Weg 3, 8093, Zurich, Switzerland
| | - Jeffrey W Bode
- Laboratory of Organic Chemistry, ETH Zurich, Vladimir-Prelog-Weg 3, 8093, Zurich, Switzerland
| | - Neal P Mankad
- Department of Chemistry, University of Illinois at Chicago, 845 W. Taylor St., Chicago, Il 60607, USA
| |
Collapse
|
5
|
Schuhmacher A, Ryan SJ, Bode JW. Katalytische Synthese von Kaliumacyltrifluoroboraten (KATs) aus Boronsäuren und dem Thioimidat‐KAT‐Transferreagenz. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202014581] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Anne Schuhmacher
- Laboratorium für Organische Chemie ETH Zürich Vladimir-Prelog-Weg 3 8093 Zürich Schweiz
| | | | - Jeffrey W. Bode
- Laboratorium für Organische Chemie ETH Zürich Vladimir-Prelog-Weg 3 8093 Zürich Schweiz
| |
Collapse
|
6
|
Schuhmacher A, Ryan SJ, Bode JW. Catalytic Synthesis of Potassium Acyltrifluoroborates (KATs) from Boronic Acids and the Thioimidate KAT Transfer Reagent. Angew Chem Int Ed Engl 2021; 60:3918-3922. [PMID: 33231353 DOI: 10.1002/anie.202014581] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2020] [Indexed: 12/22/2022]
Abstract
We report the synthesis of potassium acyltrifluoroborates (KATs) by a palladium-catalyzed cross-coupling of boronic acids and the thioimidate KAT transfer reagent. The combination of widely available aryl- and vinylboronic acids with commercially available thioimidate 1 using catalytic PdII and a CuII additive enables the preparation of KATs in high yields and with good functional group tolerance. This formal insertion of CO into organoboronic acids can also be applied to boronic acid pinacol esters and potassium organotrifluoroborates using a slightly modified procedure. The cross-coupling can be telescoped into the one-pot synthesis of amides and α-aminotrifluoroborates by exploiting the unique chemistry of KATs and their trifluoroborate iminium (TIM) derivatives.
Collapse
Affiliation(s)
- Anne Schuhmacher
- Laboratory of Organic Chemistry, ETH Zurich, Vladimir-Prelog-Weg 3, 8093, Zurich, Switzerland
| | - Sarah J Ryan
- Eli Lilly and Company, Indianapolis, IN, 46285, USA
| | - Jeffrey W Bode
- Laboratory of Organic Chemistry, ETH Zurich, Vladimir-Prelog-Weg 3, 8093, Zurich, Switzerland
| |
Collapse
|
7
|
Cheng LJ, Zhao S, Mankad NP. One-Step Synthesis of Acylboron Compounds via Copper-Catalyzed Carbonylative Borylation of Alkyl Halides*. Angew Chem Int Ed Engl 2021; 60:2094-2098. [PMID: 33090619 DOI: 10.1002/anie.202012373] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Indexed: 01/11/2023]
Abstract
A copper-catalyzed carbonylative borylation of unactivated alkyl halides has been developed, enabling efficient synthesis of aliphatic potassium acyltrifluoroborates (KATs) in high yields by treating the in situ formed tetracoordinated acylboron intermediates with aqueous KHF2 . A variety of functional groups are tolerated under the mild reaction conditions, and primary, secondary, and tertiary alkyl halides are all applicable. In addition, this method also provides facile access to N-methyliminodiacetyl (MIDA) acylboronates as well as α-methylated potassium acyltrifluoroborates in a one-pot manner. Mechanistic studies indicate a radical atom transfer carbonylation (ATC) mechanism to form acyl halide intermediates that are subsequently borylated by (NHC)CuBpin.
Collapse
Affiliation(s)
- Li-Jie Cheng
- Department of Chemistry, University of Illinois at Chicago, 845 W. Taylor St., Chicago, IL, 60607, USA
| | - Siling Zhao
- Department of Chemistry, University of Illinois at Chicago, 845 W. Taylor St., Chicago, IL, 60607, USA
| | - Neal P Mankad
- Department of Chemistry, University of Illinois at Chicago, 845 W. Taylor St., Chicago, IL, 60607, USA
| |
Collapse
|
8
|
Cheng L, Zhao S, Mankad NP. One‐Step Synthesis of Acylboron Compounds via Copper‐Catalyzed Carbonylative Borylation of Alkyl Halides**. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202012373] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Li‐Jie Cheng
- Department of Chemistry University of Illinois at Chicago 845 W. Taylor St. Chicago IL 60607 USA
| | - Siling Zhao
- Department of Chemistry University of Illinois at Chicago 845 W. Taylor St. Chicago IL 60607 USA
| | - Neal P. Mankad
- Department of Chemistry University of Illinois at Chicago 845 W. Taylor St. Chicago IL 60607 USA
| |
Collapse
|
9
|
Wu D, Taguchi J, Tanriver M, Bode JW. Synthesis of Acylboron Compounds. Angew Chem Int Ed Engl 2020; 59:16847-16858. [PMID: 32510826 DOI: 10.1002/anie.202005050] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Indexed: 12/11/2022]
Abstract
Acylboron compounds are emerging as versatile functional groups with applications in multiple research fields. Their synthesis, however, is still challenging and requires innovative methods. This Minireview provides an overview on the obstacles of acylboron synthesis and highlights notable advances within the last three years on new strategies to overcome the challenges posed by the formation of acyl-boron bonds.
Collapse
Affiliation(s)
- Dino Wu
- Laboratory of Organic Chemistry, Eidgenössische Technische Hochschule (ETH) Zürich, Vladimir-Prelog-Weg 3, 8093, Zürich, Switzerland
| | - Jumpei Taguchi
- Laboratory of Organic Chemistry, Eidgenössische Technische Hochschule (ETH) Zürich, Vladimir-Prelog-Weg 3, 8093, Zürich, Switzerland
| | - Matthias Tanriver
- Laboratory of Organic Chemistry, Eidgenössische Technische Hochschule (ETH) Zürich, Vladimir-Prelog-Weg 3, 8093, Zürich, Switzerland
| | - Jeffrey W Bode
- Laboratory of Organic Chemistry, Eidgenössische Technische Hochschule (ETH) Zürich, Vladimir-Prelog-Weg 3, 8093, Zürich, Switzerland
| |
Collapse
|
10
|
Affiliation(s)
- Dino Wu
- Laboratory of Organic Chemistry Eidgenössische Technische Hochschule (ETH) Zürich Vladimir-Prelog-Weg 3 8093 Zürich Switzerland
| | - Jumpei Taguchi
- Laboratory of Organic Chemistry Eidgenössische Technische Hochschule (ETH) Zürich Vladimir-Prelog-Weg 3 8093 Zürich Switzerland
| | - Matthias Tanriver
- Laboratory of Organic Chemistry Eidgenössische Technische Hochschule (ETH) Zürich Vladimir-Prelog-Weg 3 8093 Zürich Switzerland
| | - Jeffrey W. Bode
- Laboratory of Organic Chemistry Eidgenössische Technische Hochschule (ETH) Zürich Vladimir-Prelog-Weg 3 8093 Zürich Switzerland
| |
Collapse
|
11
|
Taguchi J, Matsuura S, Seki T, Ito H. Synthesis and Tunable Optical Properties of C,N-Chelated Borate Luminophores Derived from Potassium Acyltrifluoroborates. Chemistry 2020; 26:2450-2455. [PMID: 31863512 DOI: 10.1002/chem.201904983] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2019] [Indexed: 12/12/2022]
Abstract
A new class of borate luminophores has been synthesized by a simple two-step reaction using potassium acyltrifluoroborates (KATs) as starting materials. The hydrazones obtained from reactions between KATs and 2-hydrazinopyridines followed by a cyclization resulted in the unprecedented formation of C,N-chelated six-membered bora-heterocycles. Under consideration of the results of DFT and TD-DFT calculations, four luminophores based on such bora-heterocycles are designed and synthesized, which exhibit a tunable fluorescence range from blue to red in the solid state. Moreover, one of the luminophores exhibits mechanofluorochromism from blue to yellow/green. As a result of the aforementioned mechanochromism of one of these luminophores, white-color emission was achieved by simply mixing the four luminophores.
Collapse
Affiliation(s)
- Jumpei Taguchi
- Division of Applied Chemistry, Graduate School of Engineering, Hokkaido University, Kita 13 Nishi 8 Kita-ku, Sapporo, Hokkaido, 060-8628, Japan
| | - Satsuki Matsuura
- Division of Applied Chemistry, Graduate School of Engineering, Hokkaido University, Kita 13 Nishi 8 Kita-ku, Sapporo, Hokkaido, 060-8628, Japan
| | - Tomohiro Seki
- Division of Applied Chemistry, Graduate School of Engineering, Hokkaido University, Kita 13 Nishi 8 Kita-ku, Sapporo, Hokkaido, 060-8628, Japan
| | - Hajime Ito
- Division of Applied Chemistry, Graduate School of Engineering, Hokkaido University, Kita 13 Nishi 8 Kita-ku, Sapporo, Hokkaido, 060-8628, Japan.,Institute for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University, Kita 13 Nishi 8 Kita-ku, Sapporo, Hokkaido, 060-8628, Japan
| |
Collapse
|
12
|
Wu D, Fohn NA, Bode JW. Catalytic Synthesis of Potassium Acyltrifluoroborates (KATs) through Chemoselective Cross-Coupling with a Bifunctional Reagent. Angew Chem Int Ed Engl 2019; 58:11058-11062. [PMID: 31070291 DOI: 10.1002/anie.201904576] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2019] [Indexed: 12/14/2022]
Abstract
Potassium acyltrifluoroborates (KATs) are increasingly important functional groups, and general methods for their preparation are of great current interest. We report a bifunctional iminium reagent bearing both a tin nucleophile and a trifluoroborate, which was applied in chemoselective Pd0 -catalyzed Migita-Kosugi-Stille cross-coupling reactions owith aryl and vinyl halides. This method gives access to previously inaccessible aromatic and α,β-unsaturated acyltrifluoroborates, including precursors to amino-acid derived KATs.
Collapse
Affiliation(s)
- Dino Wu
- Laboratory of Organic Chemistry, Eidgenössische Technische Hochschule (ETH) Zürich, Vladimir-Prelog-Weg 3, 8093, Zürich, Switzerland
| | - Nicole A Fohn
- Laboratory of Organic Chemistry, Eidgenössische Technische Hochschule (ETH) Zürich, Vladimir-Prelog-Weg 3, 8093, Zürich, Switzerland
| | - Jeffrey W Bode
- Laboratory of Organic Chemistry, Eidgenössische Technische Hochschule (ETH) Zürich, Vladimir-Prelog-Weg 3, 8093, Zürich, Switzerland
| |
Collapse
|
13
|
Wu D, Fohn NA, Bode JW. Katalytische Synthese von Kaliumacyltrifluoroboraten mithilfe chemoselektiver Kreuzkupplung eines bifunktionalen Reagenzes. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201904576] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Dino Wu
- Laboratorium für Organische ChemieEidgenössische Technische Hochschule (ETH) Zürich Vladimir-Prelog-Weg 3 8093 Zürich Schweiz
| | - Nicole A. Fohn
- Laboratorium für Organische ChemieEidgenössische Technische Hochschule (ETH) Zürich Vladimir-Prelog-Weg 3 8093 Zürich Schweiz
| | - Jeffrey W. Bode
- Laboratorium für Organische ChemieEidgenössische Technische Hochschule (ETH) Zürich Vladimir-Prelog-Weg 3 8093 Zürich Schweiz
| |
Collapse
|