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Stepanova VA, Guerrero A, Schull C, Christensen J, Trudeau C, Cook J, Wolmutt K, Blochwitz J, Ismail A, West JK, Wheaton AM, Guzei IA, Yao B, Kubatova A. Hybrid Synthetic and Computational Study of an Optimized, Solvent-Free Approach to Curcuminoids. ACS OMEGA 2022; 7:7257-7277. [PMID: 35252716 PMCID: PMC8892666 DOI: 10.1021/acsomega.1c07006] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Accepted: 02/07/2022] [Indexed: 06/14/2023]
Abstract
A green and optimized protocol has been developed for the preparation of symmetric 1,7-bis(aryl)-1,6-heptadiene-3,5-diones and asymmetric 2-aryl-6-arylidenecyclohexanones with modified substrate scope and good functional group tolerance. Syntheses proceed smoothly under solvent-free conditions, providing moderate to excellent product yields with a minimal workup procedure. Control experiments, spectroscopic, and computational studies support a mechanism involving the boron-assisted in situ generation of imine intermediates. Crystal structures of three curcuminoids and isolated mechanistic intermediates are reported. The data provide insight for the further development of solvent-free protocols toward diverse curcumin derivatives in the fields of pharmaceutical and synthetic chemistries.
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Affiliation(s)
- Valeria A. Stepanova
- Department
of Chemistry and Biochemistry, University
of Wisconsin La Crosse, 1725 State Street, La Crosse, Wisconsin 54601, United States
| | - Andres Guerrero
- Department
of Chemistry and Biochemistry, University
of Wisconsin La Crosse, 1725 State Street, La Crosse, Wisconsin 54601, United States
| | - Cullen Schull
- Department
of Chemistry and Biochemistry, University
of Wisconsin La Crosse, 1725 State Street, La Crosse, Wisconsin 54601, United States
| | - Joshua Christensen
- Department
of Chemistry and Biochemistry, University
of Wisconsin La Crosse, 1725 State Street, La Crosse, Wisconsin 54601, United States
| | - Claire Trudeau
- Department
of Chemistry and Biochemistry, University
of Wisconsin La Crosse, 1725 State Street, La Crosse, Wisconsin 54601, United States
| | - Joshua Cook
- Department
of Chemistry and Biochemistry, University
of Wisconsin La Crosse, 1725 State Street, La Crosse, Wisconsin 54601, United States
| | - Kyle Wolmutt
- Department
of Chemistry and Biochemistry, University
of Wisconsin La Crosse, 1725 State Street, La Crosse, Wisconsin 54601, United States
| | - Jordan Blochwitz
- Department
of Chemistry and Biochemistry, University
of Wisconsin La Crosse, 1725 State Street, La Crosse, Wisconsin 54601, United States
| | - Abdelrahman Ismail
- Department
of Chemistry and Biochemistry, University
of Wisconsin La Crosse, 1725 State Street, La Crosse, Wisconsin 54601, United States
| | - Joseph K. West
- Department
of Chemistry, Winona State University, 175 West Mark Street, Winona, Minnesota 55987, United States
| | - Amelia M. Wheaton
- Department
of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, Wisconsin 53706, United States
| | - Ilia A. Guzei
- Department
of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, Wisconsin 53706, United States
| | - Bin Yao
- Department
of Chemistry, University of North Dakota, 151 Cornell Street, Grand Forks, North Dakota 58202, United States
| | - Alena Kubatova
- Department
of Chemistry, University of North Dakota, 151 Cornell Street, Grand Forks, North Dakota 58202, United States
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López‐Mosquera C, Grabulosa A, Rocamora M, Font‐Bardia M, Muller G. Cyclopalladated Compounds with Polyhalogenated Benzylphosphanes for the Mizoroki‐Heck Reaction. Eur J Inorg Chem 2020. [DOI: 10.1002/ejic.202000288] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Cristina López‐Mosquera
- Departament de Química Inorgànica i Orgànica Secció de Química Inorgànica Universitat de Barcelona Martí i Franquès, 1‐11 08028 Barcelona Spain
| | - Arnald Grabulosa
- Departament de Química Inorgànica i Orgànica Secció de Química Inorgànica Universitat de Barcelona Martí i Franquès, 1‐11 08028 Barcelona Spain
- Institut de Nanociència i Nanotecnologia (IN2UB) Universitat de Barcelona 08028 Barcelona Spain
| | - Mercè Rocamora
- Departament de Química Inorgànica i Orgànica Secció de Química Inorgànica Universitat de Barcelona Martí i Franquès, 1‐11 08028 Barcelona Spain
| | - Mercè Font‐Bardia
- Unitat de Difracció de RX Centres Científics i Tecnològics de la Universitat de Barcelona (CCiTUB) Solé i Sabarís 1‐3 08028 Barcelona Spain
| | - Guillermo Muller
- Departament de Química Inorgànica i Orgànica Secció de Química Inorgànica Universitat de Barcelona Martí i Franquès, 1‐11 08028 Barcelona Spain
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Rodríguez-Rey JL, Esteban-Gómez D, Platas-Iglesias C, Sousa-Pedrares A. Electronic versus steric control in palladium complexes of carboranyl phosphine-iminophosphorane ligands. Dalton Trans 2019; 48:486-503. [PMID: 30520489 DOI: 10.1039/c8dt04006k] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new family of carboranyl phosphine-iminophosphorane ligands was prepared and characterized. The new ligands present a carboranyl group directly attached to the iminophosphorane nitrogen atom through a cage carbon atom (C-carboranyl derivatives L1-L3) or through the B3 boron atom (B-carboranyl derivatives L4 and L5), and the phosphine group on a side chain derived from the diphosphine dppm, i.e. with a two-atom spacer between the P and N donor atoms. The non-carboranyl analogue L6, with a biphenyl group on the nitrogen atom, was also synthesized for comparison. These potential (P, N) ligands were used to obtain palladium complexes (Pd1-Pd6) and, thus, study how the different inductive effect of the carboranyl substituents can modify the coordinating ability of the nitrogen atom. The structural analysis of the complexes revealed two different coordination modes for the ligands: the (P, N) chelate coordination and the unexpected P-terminal coordination, which is not observed for non-carboranyl phosphine-iminophosphoranes. These unexpected structural differences led us to perform DFT calculations on the ligands and metal complexes. The calculations show that the final coordination modes depend on the balance between the electronic and steric properties of the particular carboranyl group.
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Affiliation(s)
- José Luis Rodríguez-Rey
- Departamento de Química Inorgánica, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain.
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Korte NJ, Stepanova VA, Smoliakova IP. Synthesis of N,P-, S,P-, P,P- and S,P,S-ligands using reactions of cyclopalladated complexes with KPPh2. J Organomet Chem 2013. [DOI: 10.1016/j.jorganchem.2013.07.078] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Kapdi AR, Karbelkar A, Naik M, Pednekar S, Fischer C, Schulzke C, Tromp M. Efficient synthesis of coumarin-based tetra and pentacyclic rings using phospha-palladacycles. RSC Adv 2013. [DOI: 10.1039/c3ra43821j] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Mendes SR, Thurow S, Fortes MP, Penteado F, Lenardão EJ, Alves D, Perin G, Jacob RG. Synthesis of bis(indolyl)methanes using silica gel as an efficient and recyclable surface. Tetrahedron Lett 2012. [DOI: 10.1016/j.tetlet.2012.07.118] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Serrano JL, Pérez J, García L, Sánchez G, García J, Tyagi K, Kapdi A. New phospha-palladacycles: efficient catalysts in the formylation of aryl chlorides. RSC Adv 2012. [DOI: 10.1039/c2ra21770h] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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