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Youmans DD, Tran HN, Stanley LM. Nickel-Catalyzed Isomerization of Homoallylic Alcohols. Org Lett 2023; 25:3559-3563. [PMID: 37154573 DOI: 10.1021/acs.orglett.3c01201] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
Nickel-catalyzed isomerizations of homoallylic alcohols and a bishomoallylic alcohol are presented. These isomerization reactions occur in the presence of a simple nickel catalyst that does not require addition of an exogenous ligand. The corresponding ketone products are generated in ≤98% yield.
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Affiliation(s)
- Dustin D Youmans
- Department of Chemistry, Iowa State University, Ames, Iowa 50011, United States
| | - Hai N Tran
- Department of Chemistry, Iowa State University, Ames, Iowa 50011, United States
| | - Levi M Stanley
- Department of Chemistry, Iowa State University, Ames, Iowa 50011, United States
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[Fe3O4@CQD@Si(OEt)(CH2)3NH@CC@Ad@SO3H]+Cl−: As a new, efficient, magnetically separable and reusable heterogeneous solid acid catalyst for the synthesis of 5-amino-1,3-diphenyl-1H-pyrazole 4-carbonitril and pyrano[2,3-c] pyrazole derivatives. RESEARCH ON CHEMICAL INTERMEDIATES 2022. [DOI: 10.1007/s11164-022-04919-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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Koeritz MT, Banovetz HK, Prell SA, Stanley LM. Synthesis of oxaboranes via nickel-catalyzed dearylative cyclocondensation. Chem Sci 2022; 13:7790-7795. [PMID: 35865885 PMCID: PMC9258507 DOI: 10.1039/d2sc01840c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Accepted: 05/19/2022] [Indexed: 11/21/2022] Open
Abstract
We report Ni-catalyzed dearylative cyclocondensation of aldehydes, alkynes, and triphenylborane. The reaction is initiated by oxidative cyclization of the aldehyde and alkyne coupling partners to generate an oxanickelacyclopentene which reacts with triphenylborane to form oxaboranes. This formal dearylative cyclocondensation reaction generates oxaboranes in moderate-to-high yields (47–99%) with high regioselectivities under mild reaction conditions. This approach represents a direct and modular synthesis of oxaboranes which are difficult to access using current methods. These oxaboranes are readily transformed into valuable building blocks for organic synthesis and an additional class of boron heterocycles. Selective homocoupling forms oxaboroles, oxidation generates aldol products, and reduction and arylation form substituted allylic alcohols. Oxaboranes are prepared via a nickel-catalyzed dearylative cyclocondensation reaction in up to 99% yield and excellent regioselectivity. These oxaborane products can be further transformed into a variety of synthetically useful building blocks.![]()
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Affiliation(s)
- Mason T Koeritz
- Department of Chemistry, Iowa State University Ames Iowa 50011 USA
| | - Haley K Banovetz
- Department of Chemistry, Iowa State University Ames Iowa 50011 USA
| | - Sean A Prell
- Department of Chemistry, Iowa State University Ames Iowa 50011 USA
| | - Levi M Stanley
- Department of Chemistry, Iowa State University Ames Iowa 50011 USA
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Polymer-Supported Synthesis of Various Pteridinones and Pyrimidodiazepinones. Molecules 2021; 26:molecules26061603. [PMID: 33799340 PMCID: PMC8000973 DOI: 10.3390/molecules26061603] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Revised: 03/12/2021] [Accepted: 03/12/2021] [Indexed: 11/24/2022] Open
Abstract
In this report, we employed the solid-phase synthetic approach to prepare variously substituted dihydropteridinones, tetrahydropyrrolopteridinones, and pyrimidodiazepinones, using a versatile building block-4,6-dichloro-5-nitropyrimidine. All these compounds are pharmacologically significant scaffolds of the great importance of medicinal chemists. The fast and efficient synthetic methodology is highly desirable for defining their structure-activity relationship (SAR) and optimizing pharmacokinetic properties. Our research efforts utilize simple synthetic methods to generate a library of analogues for future SAR studies. The efficiency of our approach was exemplified in various pteridinones as well as pyrimidodiazepinones.
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Koeritz MT, Burgett RW, Kadam AA, Stanley LM. Ni-Catalyzed Intermolecular Carboacylation of Internal Alkynes via Amide C–N Bond Activation. Org Lett 2020; 22:5731-5736. [DOI: 10.1021/acs.orglett.0c01607] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Mason T. Koeritz
- Department of Chemistry, Iowa State University, Ames, Iowa 50011, United States
| | - Russell W. Burgett
- Department of Chemistry, Iowa State University, Ames, Iowa 50011, United States
| | - Abhishek A. Kadam
- Department of Chemistry, Iowa State University, Ames, Iowa 50011, United States
| | - Levi M. Stanley
- Department of Chemistry, Iowa State University, Ames, Iowa 50011, United States
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Fath V, Kockmann N, Otto J, Röder T. Self-optimising processes and real-time-optimisation of organic syntheses in a microreactor system using Nelder–Mead and design of experiments. REACT CHEM ENG 2020. [DOI: 10.1039/d0re00081g] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Comparing an enhanced simplex algorithm with model-free design of experiments, this work presents a flexible platform for multi-objective, real-time optimisation.
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Affiliation(s)
- Verena Fath
- Department of Biochemical and Chemical Engineering
- Equipment Design
- TU Dortmund University
- 44227 Dortmund
- Germany
| | - Norbert Kockmann
- Department of Biochemical and Chemical Engineering
- Equipment Design
- TU Dortmund University
- 44227 Dortmund
- Germany
| | - Jürgen Otto
- Institute for Applied Thermo- and Fluid Dynamics
- Mannheim University of Applied Sciences
- 68163 Mannheim
- Germany
| | - Thorsten Röder
- Institute of Chemical Process Engineering
- Mannheim University of Applied Sciences
- 68163 Mannheim
- Germany
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Abdoli-Senejani M, Isfahani TM, Khanlari S. Application of Box-Behnken Design in Synthesis of 2-Amino-5-oxo-5,6,7,8-Tetrahydro-4H-Chromenes Using Tetrabutylammonium Hydrogen Sulfate (TBAHS). ORG PREP PROCED INT 2019. [DOI: 10.1080/00304948.2019.1644948] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- M. Abdoli-Senejani
- Department of Chemistry, Islamic Azad University, Arak Branch, Arak, Iran
| | - T. Momeni Isfahani
- Department of Chemistry, Islamic Azad University, Arak Branch, Arak, Iran
| | - S. Khanlari
- Department of Chemistry, Islamic Azad University, Arak Branch, Arak, Iran
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Glaisyer EL, Watt MS, Booker-Milburn KI. Pd(II)-Catalyzed [4 + 2] Heterocyclization Sequence for Polyheterocycle Generation. Org Lett 2018; 20:5877-5880. [DOI: 10.1021/acs.orglett.8b02543] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
| | - Michael S. Watt
- School of Chemistry, University of Bristol, Cantock’s Close, Bristol BS8 1TS, U.K
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Li Q, Yang HK, Sun Q, You WW, Zhao PL. Design, synthesis and antiproliferative activity of novel substituted 2-amino-7,8-dihydropteridin-6(5H)-one derivatives. Bioorg Med Chem Lett 2017; 27:3954-3958. [PMID: 28789892 DOI: 10.1016/j.bmcl.2017.07.076] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2017] [Revised: 07/20/2017] [Accepted: 07/28/2017] [Indexed: 01/04/2023]
Abstract
Based on our previous work, a series of novel 2-amino-7,8-dihydropteridin-6(5H)-one derivatives were designed and synthesized via a ring-closing strategy. Biological evaluation with four human cancer cell lines (BT549, T47D, MDA-MB-468, and MDA-MB-231) showed that most of these compounds possessed moderate to potent antiproliferative activities. The most promising compound 8-benzyl-2-(phenethylamino)-7,8-dihydropteridin-6(5H)-one (6q) possessing IC50 values of 7.75, 6.37, and 10.73μM against MDA-MB-468, T47D, and BT549, respectively, which were 49, 11, and 8 folds more active than the positive control fluorouracil. Moreover, fluorescence-activated cell sorting analysis revealed that compound 6q displayed a significant effect on G1 cell-cycle arrest in a concentration-dependent manner in T47D cells. The initial structure-activity relationship studies indicated that linker-length of amine chain in C-2 position of pyrimidine ring played a crucial role in modulating the antitumor activity, which could be of help in the rational design of dihydropteridin-6(5H)-ones as novel anticancer drugs.
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Affiliation(s)
- Qiu Li
- Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Science, Southern Medical University, Guangzhou 510515, PR China
| | - Hai-Kui Yang
- Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Science, Southern Medical University, Guangzhou 510515, PR China
| | - Qi Sun
- Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Science, Southern Medical University, Guangzhou 510515, PR China
| | - Wen-Wei You
- Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Science, Southern Medical University, Guangzhou 510515, PR China
| | - Pei-Liang Zhao
- Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Science, Southern Medical University, Guangzhou 510515, PR China.
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Murray PM, Bellany F, Benhamou L, Bučar DK, Tabor AB, Sheppard TD. The application of design of experiments (DoE) reaction optimisation and solvent selection in the development of new synthetic chemistry. Org Biomol Chem 2015; 14:2373-84. [PMID: 26699438 DOI: 10.1039/c5ob01892g] [Citation(s) in RCA: 87] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
This article outlines the benefits of using 'Design of Experiments' (DoE) optimisation during the development of new synthetic methodology. A particularly important factor in the development of new chemical reactions is the choice of solvent which can often drastically alter the efficiency and selectivity of a process. Whilst solvent optimisation is usually done in a non-systematic way based upon a chemist's intuition and previous laboratory experience, we illustrate how optimisation of the solvent for a reaction can be carried out by using a 'map of solvent space' in a DoE optimisation. A new solvent map has been developed specifically for optimisation of new chemical reactions using principle component analysis (PCA) incorporating 136 solvents with a wide range of properties. The new solvent map has been used to identify safer alternatives to toxic/hazardous solvents, and also in the optimisation of an S(N)Ar reaction.
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Affiliation(s)
- Paul M Murray
- Paul Murray Catalysis Consulting Ltd, 67 Hudson Close, Yate, BS37 4NP, UK.
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