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Liu Y, Oble J, Poli G. Switchable selectivity in Pd-catalyzed [3 + 2] annulations of γ-oxy-2-cycloalkenones with 3-oxoglutarates: C-C/C-C vs C-C/O-C bond formation. Beilstein J Org Chem 2019; 15:1107-1115. [PMID: 31164947 PMCID: PMC6541379 DOI: 10.3762/bjoc.15.107] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2019] [Accepted: 05/06/2019] [Indexed: 11/23/2022] Open
Abstract
Two complementary [3 + 2] annulation protocols between 3-oxoglutarates and cyclic γ-oxy-2-cycloalkenones, simply differing on the reaction temperature, are disclosed. These domino transformations allow C-C/O-C or C-C/C-C [3 + 2] annulations at will, via an intermolecular Pd-catalyzed C-allylation/intramolecular O- or C-1,4-addition sequence, respectively. In particular, exploiting the reversibility of the O-1,4-addition step, in combination with the irreversible C-1,4-addition/decarboxylation path, the intramolecular conjugate addition step could be diverted from the kinetic (O-alkylation) to the thermodynamic path (C-alkylation) thanks to a simple temperature increase. Crucial for the success of this bis-nucleophile/bis-electrophile [3 + 2] annulation is its well-defined step chronology in combination with the total chemoselectivity of the former step. This [3 + 2] C-C/O-C bond forming annulation protocol could be also extended to 1,3,5-triketones as well as 1,3-bis-sulfonylpropan-2-one bis-nucleophiles.
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Affiliation(s)
- Yang Liu
- Sorbonne Université, Faculté des Sciences et Ingénierie, CNRS, Institut Parisien de Chimie Moléculaire, IPCM, 4 place Jussieu, 75005 Paris, France
| | - Julie Oble
- Sorbonne Université, Faculté des Sciences et Ingénierie, CNRS, Institut Parisien de Chimie Moléculaire, IPCM, 4 place Jussieu, 75005 Paris, France
| | - Giovanni Poli
- Sorbonne Université, Faculté des Sciences et Ingénierie, CNRS, Institut Parisien de Chimie Moléculaire, IPCM, 4 place Jussieu, 75005 Paris, France
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2
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Tsukamoto H, Ito K, Doi T. Synthesis of multi-substituted dihydrofurans via palladium-catalysed coupling between 2,3-alkadienols and pronucleophiles. Chem Commun (Camb) 2018; 54:5102-5105. [PMID: 29714394 DOI: 10.1039/c8cc02589d] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Multi-substituted dihydrofurans were obtained from a palladium-catalysed coupling reaction between 2,3-alkadienols and ketones bearing an electron-withdrawing group at the α-position.
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Affiliation(s)
- Hirokazu Tsukamoto
- Graduate School of Pharmaceutical Sciences
- Tohoku University
- Sendai 980-8578
- Japan
| | - Kazuya Ito
- Graduate School of Pharmaceutical Sciences
- Tohoku University
- Sendai 980-8578
- Japan
| | - Takayuki Doi
- Graduate School of Pharmaceutical Sciences
- Tohoku University
- Sendai 980-8578
- Japan
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3
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Kammerer C, Prestat G, Madec D, Poli G. Synthesis of γ-lactams and γ-lactones via intramolecular Pd-catalyzed allylic alkylations. Acc Chem Res 2014; 47:3439-47. [PMID: 25415844 DOI: 10.1021/ar500178n] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
CONSPECTUS: Lactones and lactams are a well-known class of natural products and can be used as building blocks in organic synthesis. In addition, they can be found in many natural sources and synthetic drugs and have a broad range of biological or odorant properties. Chemists can create these useful compounds through palladium catalysis, which is a highly efficient tool for organic synthesis and is conveniently functional group tolerant. In this Account, we describe our work over the past 15 years in intramolecular Pd-catalyzed allylations where we have tethered the nucleophile and the electrophile by either an amide or an ester moiety, to produce γ-lactams and γ-lactones. We discuss in detail how the nature of the heteroatom tether influences the regioselectivity of the reaction. For example, a ketone [-C(O)CH2-] tether leads to mixtures of 5-exo and 7-endo cyclization products, while ester or amide [-C(O)X-] tethers afford sole 5-exo products. However, in the case of X = O, we were required to overcome two issues in the synthesis of γ-lactones. First of all, the tethering ester function can compete with the allylic leaving group in the oxidative addition to the Pd(0) center. Second, in this case, the proportion of the conformers that have a suitable geometry for cyclization is very low. When we insert a juxtaposed silyl group on the allyl fragment, the molecule can undergo oxidative addition and functionalization of the lactone via Hiyama cross-coupling. We also performed DFT calculations on these systems, which allowed us to better understand the behavior of [-C(O)X-] and [-C(O)CH2-] tethers. Computations also let us rationalize the different reactivities that we observed as a function of the geometry (Z or E) of the starting substrates. In addition, we were able to synthesize natural products or analogs (α-kainic acid, isoretronecanol, and picropodophyllin). We could turn these allylation reactions into asymmetric transformations and incorporate them into domino sequences. Thus, an allylation/Mizoroki-Heck sequence allowed us to straightforwardly access an aza-analog of picropodophyllin, as well as reach the lysergic acid backbone. Finally, we found that through carbopalladation of allenes, we could efficiently synthesize the key η(3)-allylpalladium intermediates that were then ready for allylation reactions.
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Affiliation(s)
- Claire Kammerer
- Sorbonne Universités, UPMC Univ Paris 06, UMR 8232, Institut Parisien de Chimie Moléculaire, F-75005 Paris, France
- FR2769
Institut de Chimie Moléculaire, UMR 8232, CNRS, F-75005 Paris, France
| | - Guillaume Prestat
- Sorbonne Universités, UPMC Univ Paris 06, UMR 8232, Institut Parisien de Chimie Moléculaire, F-75005 Paris, France
- FR2769
Institut de Chimie Moléculaire, UMR 8232, CNRS, F-75005 Paris, France
| | - David Madec
- Sorbonne Universités, UPMC Univ Paris 06, UMR 8232, Institut Parisien de Chimie Moléculaire, F-75005 Paris, France
- FR2769
Institut de Chimie Moléculaire, UMR 8232, CNRS, F-75005 Paris, France
| | - Giovanni Poli
- Sorbonne Universités, UPMC Univ Paris 06, UMR 8232, Institut Parisien de Chimie Moléculaire, F-75005 Paris, France
- FR2769
Institut de Chimie Moléculaire, UMR 8232, CNRS, F-75005 Paris, France
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4
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Synthesis of 1,4-benzodiazepinones via palladium-catalysed allene carbopalladation/amination domino sequence. J Organomet Chem 2014. [DOI: 10.1016/j.jorganchem.2013.11.010] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Zhao Y, Sun L, Zeng T, Wang J, Peng Y, Song G. Direct olefination of benzaldehydes into 1,3-diarylpropenes via a copper-catalyzed heterodomino Knoevenagel-decarboxylation-Csp3-H activation sequence. Org Biomol Chem 2014; 12:3493-8. [DOI: 10.1039/c4ob00155a] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Copper-catalyzed direct olefination of benzaldehydes into unsymmetrical 1,3-diarylpropenes by a novel domino Knoevenagel-decarboxylation-Csp3-H activation sequence using simpler substrates like benzaldehydes.
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Affiliation(s)
- Yaping Zhao
- Shanghai Key Laboratory of Chemical Biology
- Institute of Pesticides and Pharmaceuticals
- East China University of Science and Technology
- Shanghai 200237, P.R. China
| | - Lu Sun
- Shanghai Key Laboratory of Chemical Biology
- Institute of Pesticides and Pharmaceuticals
- East China University of Science and Technology
- Shanghai 200237, P.R. China
| | - Tieqiang Zeng
- Shanghai Key Laboratory of Chemical Biology
- Institute of Pesticides and Pharmaceuticals
- East China University of Science and Technology
- Shanghai 200237, P.R. China
| | - Jiayi Wang
- Shanghai Key Laboratory of Chemical Biology
- Institute of Pesticides and Pharmaceuticals
- East China University of Science and Technology
- Shanghai 200237, P.R. China
| | - Yanqing Peng
- Shanghai Key Laboratory of Chemical Biology
- Institute of Pesticides and Pharmaceuticals
- East China University of Science and Technology
- Shanghai 200237, P.R. China
| | - Gonghua Song
- Shanghai Key Laboratory of Chemical Biology
- Institute of Pesticides and Pharmaceuticals
- East China University of Science and Technology
- Shanghai 200237, P.R. China
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Lechel T, Pfrengle F, Reissig HU, Zimmer R. Three Carbons for Complexity! Recent Developments of Palladium-Catalyzed Reactions of Allenes. ChemCatChem 2013. [DOI: 10.1002/cctc.201200875] [Citation(s) in RCA: 112] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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