1
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Pino NW, Sizemore AR, Cleary L, Liu H, McSwiggen DT, Song D, Beck HP, Cheng K, Hardy M, Hsiung J, Tang Y, Anugula R, Lakshman S, Merneedi RK, Sinha P. Optimized Properties and Synthesis of Photoactivatable Diazoketorhodamines Facilitate and Enhance High-Throughput Single-Molecule Tracking. J Org Chem 2024. [PMID: 38836310 DOI: 10.1021/acs.joc.4c00718] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2024]
Abstract
Photoactivatable (PA) rhodamine dyes are widely used in single-molecule tracking (SMT) and a variety of other fluorescence-based imaging modalities. One of the most commonly employed scaffolds uses a diazoketone to lock the rhodamine in the nonfluorescent closed form, which can be activated with 405 nm light. However, poor properties of previously reported dyes require significant washing, which can be resource- and cost-intensive, especially when performing microscopy in a large scale and high-throughput fashion. Here, we report improved diazoketorhodamines that perform exceptionally well in single-molecule tracking microscopy. We also report on the optimization of an improved synthetic method for further iteration and tailoring of diazoketorhodamines to the requirements of a specific user.
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Affiliation(s)
- Nicholas W Pino
- Eikon Therapeutics Inc., Hayward, California 94545, United States
| | - Anne R Sizemore
- Eikon Therapeutics Inc., Hayward, California 94545, United States
| | - Leah Cleary
- Eikon Therapeutics Inc., Hayward, California 94545, United States
| | - Helen Liu
- Eikon Therapeutics Inc., Hayward, California 94545, United States
| | | | - Dan Song
- Eikon Therapeutics Inc., Hayward, California 94545, United States
| | - Hilary P Beck
- Eikon Therapeutics Inc., Hayward, California 94545, United States
| | - Kylie Cheng
- Eikon Therapeutics Inc., Hayward, California 94545, United States
| | - Miki Hardy
- Eikon Therapeutics Inc., Hayward, California 94545, United States
| | - Jessica Hsiung
- Eikon Therapeutics Inc., Hayward, California 94545, United States
| | - Yangzhong Tang
- Eikon Therapeutics Inc., Hayward, California 94545, United States
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2
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Kitamura M, Ohtsuka K, Eto T, Tsuzaki M, Wada M, Shimooka H, Okauchi T. Diazo-Transfer Reaction of Nonactivated Ketones with 2-Azido-1,3-bis(2,6-diisopropylphenyl)imidazolium Hexafluorophosphate (IPrAP). J Org Chem 2023; 88:15494-15500. [PMID: 37874046 DOI: 10.1021/acs.joc.3c01743] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2023]
Abstract
The diazo-transfer reaction of nonactivated ketone under mild reaction conditions was developed. Various nonactivated ketones such as aryl methyl ketones, sec-alkyl methyl ketones, and cyclic ketones were transformed into their corresponding α-diazoketones in one step by treating 2-azido-1,3-bis(2,6-diisopropylphenyl)imidazolium hexafluorophosphate (IPrAP) in the presence of iPr2NH in ethylene glycol. In the reaction of IPrAP with prim-alkyl methyl ketone and prim-alkyl aryl ketones, migratory amidation proceeded under the reaction conditions to afford the corresponding amides.
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Affiliation(s)
- Mitsuru Kitamura
- Department of Applied Chemistry, Kyushu Institute of Technology, 1-1 Sensuicho, Tobata, Kitakyushu 804-8550, Japan
| | - Kazuki Ohtsuka
- Department of Applied Chemistry, Kyushu Institute of Technology, 1-1 Sensuicho, Tobata, Kitakyushu 804-8550, Japan
| | - Takashi Eto
- Department of Applied Chemistry, Kyushu Institute of Technology, 1-1 Sensuicho, Tobata, Kitakyushu 804-8550, Japan
| | - Masato Tsuzaki
- Department of Applied Chemistry, Kyushu Institute of Technology, 1-1 Sensuicho, Tobata, Kitakyushu 804-8550, Japan
| | - Mayuko Wada
- Department of Applied Chemistry, Kyushu Institute of Technology, 1-1 Sensuicho, Tobata, Kitakyushu 804-8550, Japan
| | - Hirokazu Shimooka
- Department of Applied Chemistry, Kyushu Institute of Technology, 1-1 Sensuicho, Tobata, Kitakyushu 804-8550, Japan
| | - Tatsuo Okauchi
- Department of Applied Chemistry, Kyushu Institute of Technology, 1-1 Sensuicho, Tobata, Kitakyushu 804-8550, Japan
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3
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Liu XY, Yang YL, Dang Y, Marek I, Zhang FG, Ma JA. Tetrazole Diversification of Amino Acids and Peptides via Silver-Catalyzed Intermolecular Cycloaddition with Aryldiazonium Salts. Angew Chem Int Ed Engl 2023; 62:e202304740. [PMID: 37212541 DOI: 10.1002/anie.202304740] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Revised: 05/19/2023] [Accepted: 05/22/2023] [Indexed: 05/23/2023]
Abstract
Selective structural modification of amino acids and peptides is a central strategy in organic chemistry, chemical biology but also in pharmacology and material science. In this context, the formation of tetrazole rings, known to possess significant therapeutic properties, would expand the chemical space of unnatural amino acids but has received less attention. In this study, we demonstrated that the classic unimolecular Wolff rearrangement of α-amino acid-derived diazoketones could be replaced by a faster intermolecular cycloaddition reaction with aryldiazonium salts under identical practical conditions. This strategy provides an efficient synthetic platform that could transform proteinogenic α-amino acids into a plethora of unprecedented tetrazole-decorated amino acid derivatives with preservation of the stereocenters. Density functional theory studies shed some light on the reaction mechanism and provided information regarding the origins of the chemo- and regioselectivity. Furthermore, this diazo-cycloaddition protocol was applied to construct tetrazole-modified peptidomimetics and drug-like amino acid derivatives.
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Affiliation(s)
- Xuan-Yu Liu
- Department of Chemistry, Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Frontiers Science Center for Synthetic Biology (Ministry of Education), Tianjin University, Tianjin, 300072, P. R. China
| | - Yi-Lin Yang
- Department of Chemistry, Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Frontiers Science Center for Synthetic Biology (Ministry of Education), Tianjin University, Tianjin, 300072, P. R. China
| | - Yanfeng Dang
- Department of Chemistry, Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Frontiers Science Center for Synthetic Biology (Ministry of Education), Tianjin University, Tianjin, 300072, P. R. China
| | - Ilan Marek
- Schulich Faculty of Chemistry and the Resnick Sustainability Center for Catalysis, Technion-Israel Institute of Technology, Haifa, 3200009, Israel
| | - Fa-Guang Zhang
- Department of Chemistry, Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Frontiers Science Center for Synthetic Biology (Ministry of Education), Tianjin University, Tianjin, 300072, P. R. China
| | - Jun-An Ma
- Department of Chemistry, Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Frontiers Science Center for Synthetic Biology (Ministry of Education), Tianjin University, Tianjin, 300072, P. R. China
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4
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Capurro P, Lambruschini C, Lova P, Moni L, Basso A. Into the Blue: Ketene Multicomponent Reactions under Visible Light. J Org Chem 2021; 86:5845-5851. [PMID: 33822607 PMCID: PMC8154565 DOI: 10.1021/acs.joc.1c00278] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
![]()
For the first time,
a detailed study on the photophysical properties
of variously substituted diazoketones and on their photoreactivity
under blue LED irradiation was carried out. Despite very limited absorbance
in the visible region, we have demonstrated that, independently from
their structure, α-diazoketones all undergo a very efficient
Wolff rearrangement. Contrarily to the same UV-mediated reaction,
where photons can give rise to side processes, in this case, almost
all absorbed photons are selective and effective, and the quantum
yield is close to 100%. If the rearrangement is carried out in the
presence of isocyanides and carboxylic acids/silanols, the photoreactivity
is not affected, and the resulting ketenes can afford α-acyloxy-
and α-silyloxyacrylamides through two distinct multicomponent
reactions, performed both in batch and under continuous flow, with
improved selectivity and broader scope. These photoinduced multicomponent
reactions can be coupled with other visible-light-mediated transformations,
thus increasing the diversity of the molecules obtainable by this
approach.
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Affiliation(s)
- Pietro Capurro
- Dipartimento di Chimica e Chimica Industriale, Università degli Studi di Genova, Via Dodecaneso 31, 16146 Genova, Italy
| | - Chiara Lambruschini
- Dipartimento di Chimica e Chimica Industriale, Università degli Studi di Genova, Via Dodecaneso 31, 16146 Genova, Italy
| | - Paola Lova
- Dipartimento di Chimica e Chimica Industriale, Università degli Studi di Genova, Via Dodecaneso 31, 16146 Genova, Italy
| | - Lisa Moni
- Dipartimento di Chimica e Chimica Industriale, Università degli Studi di Genova, Via Dodecaneso 31, 16146 Genova, Italy
| | - Andrea Basso
- Dipartimento di Chimica e Chimica Industriale, Università degli Studi di Genova, Via Dodecaneso 31, 16146 Genova, Italy
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5
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Zhang C, Dong C, Wang X, Shen R. Copper‐Catalyzed Decarboxylative Hydrophosphinylation of α‐Acyl‐α‐Diazoacetates. European J Org Chem 2020. [DOI: 10.1002/ejoc.202001326] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Can Zhang
- State Key Laboratory of Materials‐Oriented Chemical Engineering College of Chemical Engineering Nanjing Tech University 211816 Nanjing China
| | - Chao Dong
- State Key Laboratory of Materials‐Oriented Chemical Engineering College of Chemical Engineering Nanjing Tech University 211816 Nanjing China
| | - Xin Wang
- State Key Laboratory of Materials‐Oriented Chemical Engineering College of Chemical Engineering Nanjing Tech University 211816 Nanjing China
| | - Ruwei Shen
- State Key Laboratory of Materials‐Oriented Chemical Engineering College of Chemical Engineering Nanjing Tech University 211816 Nanjing China
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6
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Gan L, Wei L, Wan J. Catalyst‐Free Synthesis of α‐Diazoketones in Water by Microwave Promoted Enaminone C=C Double Bond Cleavage. ChemistrySelect 2020. [DOI: 10.1002/slct.202002247] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Lu Gan
- College of Chemistry and Chemical EngineeringJiangxi Normal University Nanchang 330022 P. R. China
- School of ScienceNanchang Institute of Technology Nanchang 330029 P. R. China
| | - Li Wei
- College of Chemistry and Chemical EngineeringJiangxi Normal University Nanchang 330022 P. R. China
| | - Jie‐Ping Wan
- College of Chemistry and Chemical EngineeringJiangxi Normal University Nanchang 330022 P. R. China
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7
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Duan X, Huang Z, Qian G, He K, Zhang J, Mleczko L, Zhou X. Unprecedented yield of methyl-esterification with in-situ generated diazomethane in a microchannel reactor with methanol as solvent. Chem Eng Sci 2020. [DOI: 10.1016/j.ces.2019.115397] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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8
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Ravn AK, Vilstrup MBT, Noerby P, Nielsen DU, Daasbjerg K, Skrydstrup T. Carbon Isotope Labeling Strategy for β-Amino Acid Derivatives via Carbonylation of Azanickellacycles. J Am Chem Soc 2019; 141:11821-11826. [PMID: 31310710 DOI: 10.1021/jacs.9b05934] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
A series of 4-membered azametallacycles have been prepared by the oxidative addition of Ni(0) with aziridines. Stoichiometric 13C-labeled carbon monoxide could be efficiently incorporated via Ni-C bond insertion to generate air stable and isolable cyclic Ni-acyl complexes. Upon subjection to a range of C-, N-, O-, and S-nucleophiles, 13C-labeled β-amino acids and derivatives thereof, as well as β-aminoketones, could be rapidly accessed. The methodology proved highly adaptable for the synthesis of the antidiabetic drug, sitagliptin, with a single carbon isotope label.
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Affiliation(s)
- Anne K Ravn
- Carbon Dioxide Activation Center (CADIAC), The Interdisciplinary Nanoscience Center (iNANO) and Department of Chemistry , Aarhus University , Gustav Wieds Vej 14 , 8000 Aarhus , Denmark
| | - Maria B T Vilstrup
- Carbon Dioxide Activation Center (CADIAC), The Interdisciplinary Nanoscience Center (iNANO) and Department of Chemistry , Aarhus University , Gustav Wieds Vej 14 , 8000 Aarhus , Denmark
| | - Peter Noerby
- Center for Materials Crystallography, Department of Chemistry , Aarhus University , Langelandsgade 140 , 8000 Aarhus , Denmark
| | - Dennis U Nielsen
- Carbon Dioxide Activation Center (CADIAC), The Interdisciplinary Nanoscience Center (iNANO) and Department of Chemistry , Aarhus University , Gustav Wieds Vej 14 , 8000 Aarhus , Denmark
| | - Kim Daasbjerg
- Carbon Dioxide Activation Center (CADIAC), The Interdisciplinary Nanoscience Center (iNANO) and Department of Chemistry , Aarhus University , Gustav Wieds Vej 14 , 8000 Aarhus , Denmark
| | - Troels Skrydstrup
- Carbon Dioxide Activation Center (CADIAC), The Interdisciplinary Nanoscience Center (iNANO) and Department of Chemistry , Aarhus University , Gustav Wieds Vej 14 , 8000 Aarhus , Denmark
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9
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Affiliation(s)
- Ritu Arora
- Computational Chemistry Laboratory, Department of Chemistry, University of Delhi, Delhi 110007, India
| | - Kriti Kashyap
- Computational Chemistry Laboratory, Department of Chemistry, University of Delhi, Delhi 110007, India
| | - Anshika Mittal
- Computational Chemistry Laboratory, Department of Chemistry, University of Delhi, Delhi 110007, India
| | - Rita Kakkar
- Computational Chemistry Laboratory, Department of Chemistry, University of Delhi, Delhi 110007, India
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10
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Zheng Y, Zhang J, Cheng X, Xu X, Zhang L. Wolff Rearrangement of Oxidatively Generated α-Oxo Gold Carbenes: An Effective Approach to Silylketenes. Angew Chem Int Ed Engl 2019; 58:5241-5245. [PMID: 30785666 PMCID: PMC6564687 DOI: 10.1002/anie.201814018] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2018] [Indexed: 12/21/2022]
Abstract
Gold-catalyzed oxidations of alkynes by N-oxides offer direct access to reactive α-oxo gold carbene intermediates from benign and readily available alkynes instead of hazardous diazo carbonyl compounds. Despite various versatile synthetic methods developed based on this strategy, one of the hallmarks of α-oxo carbene/carbenoid chemistry, that is, the Wolff rearrangement, has not been realized in this context. This study discloses the first examples that show the Wolff rearrangement can be readily realized by α-oxo gold carbenes oxidatively generated from TBS-terminated alkynes (TBS=tert-butyldimethylsilyl). The thus-generated silylketenes can be either isolated pure or subsequently trapped by various internal or external nucleophiles in one pot to afford α-silylated carboxylic acids, their derivatives, or TBS-substituted allenes.
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Affiliation(s)
- Yang Zheng
- Department of Chemistry and Biochemistry, University of California Santa Barbara, CA 93106, USA
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science Soochow University, Suzhou 215123 (P.R. China)
| | - Junqi Zhang
- Department of Chemistry and Biochemistry, University of California Santa Barbara, CA 93106, USA
| | - Xinpeng Cheng
- Department of Chemistry and Biochemistry, University of California Santa Barbara, CA 93106, USA
| | - Xinfang Xu
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science Soochow University, Suzhou 215123 (P.R. China)
| | - Liming Zhang
- Department of Chemistry and Biochemistry, University of California Santa Barbara, CA 93106, USA
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11
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Zheng Y, Zhang J, Cheng X, Xu X, Zhang L. Wolff Rearrangement of Oxidatively Generated α‐Oxo Gold Carbenes: An Effective Approach to Silylketenes. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201814018] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Yang Zheng
- Department of Chemistry and BiochemistryUniversity of California, Santa Barbara CA 93106 USA
- Key Laboratory of Organic Synthesis of Jiangsu ProvinceCollege of Chemistry, Chemical Engineering and Materials ScienceSoochow University Suzhou 215123 P. R. China
| | - Junqi Zhang
- Department of Chemistry and BiochemistryUniversity of California, Santa Barbara CA 93106 USA
| | - Xinpeng Cheng
- Department of Chemistry and BiochemistryUniversity of California, Santa Barbara CA 93106 USA
| | - Xinfang Xu
- Key Laboratory of Organic Synthesis of Jiangsu ProvinceCollege of Chemistry, Chemical Engineering and Materials ScienceSoochow University Suzhou 215123 P. R. China
| | - Liming Zhang
- Department of Chemistry and BiochemistryUniversity of California, Santa Barbara CA 93106 USA
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12
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Monticelli S, Urban E, Langer T, Holzer W, Pace V. A Straightforward Homologation of Carbon Dioxide with Magnesium Carbenoids en Route to α-Halocarboxylic Acids. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201801614] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Serena Monticelli
- University of Vienna; Department of Pharmaceutical Chemistry; Althanstrasse 14-1090 Vienna Austria
| | - Ernst Urban
- University of Vienna; Department of Pharmaceutical Chemistry; Althanstrasse 14-1090 Vienna Austria
| | - Thierry Langer
- University of Vienna; Department of Pharmaceutical Chemistry; Althanstrasse 14-1090 Vienna Austria
| | - Wolfgang Holzer
- University of Vienna; Department of Pharmaceutical Chemistry; Althanstrasse 14-1090 Vienna Austria
| | - Vittorio Pace
- University of Vienna; Department of Pharmaceutical Chemistry; Althanstrasse 14-1090 Vienna Austria
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13
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de Mello AC, Momo PB, Burtoloso ACB, Amarante GW. Metal-Free Insertion Reactions of Diazo Carbonyls to Azlactones. J Org Chem 2018; 83:11399-11406. [PMID: 30134107 DOI: 10.1021/acs.joc.8b01683] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Insertion reactions of diazo carbonyls to azlactones in basic conditions have been performed. The developed method allows the preparation of a wide range of oxazole derivatives in yields ranging from 74 to 98%. Different substituents on both azlactone rings and diazo carbonyls do not compromise the methodology, even those containing stereogenic centers. Isotopic labeling experiments revealed the mechanism may proceed through a rare diazo carbonyl activation by an ammonium salt derivative.
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Affiliation(s)
- Amanda C de Mello
- Department of Chemistry , Federal University of Juiz de Fora , 36036-900 Juiz de Fora , MG , Brazil
| | - Patrícia B Momo
- Institute of Chemistry of São Carlos , University of São Paulo , 13560-970 São Carlos , SP , Brazil
| | - Antonio C B Burtoloso
- Institute of Chemistry of São Carlos , University of São Paulo , 13560-970 São Carlos , SP , Brazil
| | - Giovanni W Amarante
- Department of Chemistry , Federal University of Juiz de Fora , 36036-900 Juiz de Fora , MG , Brazil
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14
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Castoldi L, Monticelli S, Senatore R, Ielo L, Pace V. Homologation chemistry with nucleophilic α-substituted organometallic reagents: chemocontrol, new concepts and (solved) challenges. Chem Commun (Camb) 2018; 54:6692-6704. [PMID: 29850663 DOI: 10.1039/c8cc02499e] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The transfer of a reactive nucleophilic CH2X unit into a preformed bond enables the introduction of a fragment featuring the exact and desired degree of functionalization through a single synthetic operation. The instability of metallated α-organometallic species often poses serious questions regarding the practicability of using this conceptually intuitive and simple approach for forming C-C or C-heteroatom bonds. A deep understanding of processes regulating the formation of these nucleophiles is a precious source of inspiration not only for successfully applying theoretically feasible transformations (i.e. determining how to employ a given reagent), but also for designing new reactions which ultimately lead to the introduction of molecular complexity via short experimental sequences.
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Affiliation(s)
- Laura Castoldi
- University of Vienna, Department of Pharmaceutical Chemistry, Althanstrasse, 14, A-1090, Vienna, Austria.
| | - Serena Monticelli
- University of Vienna, Department of Pharmaceutical Chemistry, Althanstrasse, 14, A-1090, Vienna, Austria.
| | - Raffaele Senatore
- University of Vienna, Department of Pharmaceutical Chemistry, Althanstrasse, 14, A-1090, Vienna, Austria.
| | - Laura Ielo
- University of Vienna, Department of Pharmaceutical Chemistry, Althanstrasse, 14, A-1090, Vienna, Austria.
| | - Vittorio Pace
- University of Vienna, Department of Pharmaceutical Chemistry, Althanstrasse, 14, A-1090, Vienna, Austria.
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15
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Merging lithium carbenoid homologation and enzymatic reduction: A combinative approach to the HIV-protease inhibitor Nelfinavir. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.03.034] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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16
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BURTOLOSO ANTONIOC, MOMO PATRÍCIAB, NOVAIS GRAZIELEL. Traditional and New methods for the Preparation of Diazocarbonyl Compounds. ACTA ACUST UNITED AC 2018; 90:859-893. [DOI: 10.1590/0001-3765201820170768] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2017] [Accepted: 11/16/2017] [Indexed: 12/14/2022]
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17
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Castoldi L, Ielo L, Holzer W, Giester G, Roller A, Pace V. α-Arylamino Diazoketones: Diazomethane-Loading Controlled Synthesis, Spectroscopic Investigations, and Structural X-ray Analysis. J Org Chem 2018; 83:4336-4347. [DOI: 10.1021/acs.joc.7b03134] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
| | - Laura Ielo
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale Annunziata, 98168 Messina, Italy
| | | | | | - Alexander Roller
- X-Ray Structure Analysis Center, University of Vienna, Waehringerstrasse 42, A-1090 Vienna, Austria
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18
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Kirmse-Doyle- and Stevens-Type Rearrangements of Glutarate-Derived Oxonium Ylides. Chemistry 2018; 24:3209-3217. [DOI: 10.1002/chem.201704624] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2017] [Indexed: 11/07/2022]
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19
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Dallinger D, Kappe CO. Lab-scale production of anhydrous diazomethane using membrane separation technology. Nat Protoc 2017; 12:2138-2147. [PMID: 28906494 DOI: 10.1038/nprot.2017.046] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Diazomethane is among the most versatile and useful reagents for introducing methyl or methylene groups in organic synthesis. However, because of its explosive nature, its generation and purification by distillation are accompanied by a certain safety risk. This protocol describes how to construct a configurationally simple tube-in-flask reactor for the in situ on-demand generation of anhydrous diazomethane using membrane separation technology and thus avoiding distillation methods. The described reactor can be prepared from commercially available parts within ∼1 h. In this system, solutions of Diazald and aqueous potassium hydroxide are continuously pumped into a spiral of membrane tubing, and diazomethane is generated upon mixing of the two streams. Pure diazomethane gas diffuses out of the reaction mixture through the membrane tubing (made of gas-permeable Teflon AF-2400). As the membrane tubing is immersed in a flask filled with the substrate solution, diazomethane is instantly consumed, which minimizes the risk of diazomethane accumulation. For this protocol, the reaction of diazomethane with benzoic acid on a 5-mmol scale has been selected as a model reaction and is described in detail. Methyl benzoate was isolated in an 88-90% yield (597-611 mg) within ∼3 h.
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Affiliation(s)
- Doris Dallinger
- Institute of Chemistry, University of Graz, NAWI Graz, Graz, Austria
| | - C Oliver Kappe
- Institute of Chemistry, University of Graz, NAWI Graz, Graz, Austria.,Research Center Pharmaceutical Engineering GmbH (RCPE), Graz, Austria
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20
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Zhang J, Chen W, Huang D, Zeng X, Wang X, Hu Y. Tandem Synthesis of α-Diazoketones from 1,3-Diketones. J Org Chem 2017; 82:9171-9174. [DOI: 10.1021/acs.joc.7b01187] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jianlan Zhang
- Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology
(Ministry of Education), Department of Chemistry, Tsinghua University, Beijing 100084, People’s Republic of China
| | - Wenwen Chen
- Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology
(Ministry of Education), Department of Chemistry, Tsinghua University, Beijing 100084, People’s Republic of China
| | - Dayun Huang
- Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology
(Ministry of Education), Department of Chemistry, Tsinghua University, Beijing 100084, People’s Republic of China
| | - Xiaobao Zeng
- Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology
(Ministry of Education), Department of Chemistry, Tsinghua University, Beijing 100084, People’s Republic of China
| | - Xinyan Wang
- Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology
(Ministry of Education), Department of Chemistry, Tsinghua University, Beijing 100084, People’s Republic of China
| | - Yuefei Hu
- Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology
(Ministry of Education), Department of Chemistry, Tsinghua University, Beijing 100084, People’s Republic of China
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21
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Recent progress in insertion and cyclopropanation reactions of metal carbenoids from α-diazocarbonyl compounds. RESEARCH ON CHEMICAL INTERMEDIATES 2017. [DOI: 10.1007/s11164-017-3000-x] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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22
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Wang Y, Bartlett MJ, Denard CA, Hartwig JF, Zhao H. Combining Rh-Catalyzed Diazocoupling and Enzymatic Reduction To Efficiently Synthesize Enantioenriched 2-Substituted Succinate Derivatives. ACS Catal 2017. [DOI: 10.1021/acscatal.7b00254] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Yajie Wang
- Department
of Chemical and Biomolecular Engineering, University of Illinois at Urbana−Champaign, Urbana, Illinois 61801, United States
| | - Mark J. Bartlett
- Department
of Chemistry, University of California-Berkeley, Berkeley, California 94720, United States
| | - Carl A. Denard
- Department
of Chemical and Biomolecular Engineering, University of Illinois at Urbana−Champaign, Urbana, Illinois 61801, United States
| | - John F. Hartwig
- Department
of Chemistry, University of California-Berkeley, Berkeley, California 94720, United States
| | - Huimin Zhao
- Department
of Chemical and Biomolecular Engineering, University of Illinois at Urbana−Champaign, Urbana, Illinois 61801, United States
- Departments
of Chemistry, Biochemistry, and Bioengineering, Carl R. Woese Institute
for Genomic Biology, University of Illinois at Urbana−Champaign, Urbana, Illinois 61801, United States
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23
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BABU BHARI, VIJAY K, MURALI KRISHNA KBALA, SHARMILA N, RAMANA MBABY. An efficient PEG-400 mediated catalyst free green synthesis of 2-amino-thiazoles from α-diazoketones and thiourea. J CHEM SCI 2016. [DOI: 10.1007/s12039-016-1130-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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24
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Pace V, Holzer W, De Kimpe N. Lithium Halomethylcarbenoids: Preparation and Use in the Homologation of Carbon Electrophiles. CHEM REC 2016; 16:2061-76. [PMID: 27381551 DOI: 10.1002/tcr.201600011] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2016] [Indexed: 11/06/2022]
Abstract
α-Halomethyllithium carbenoids are useful homologating reagents which - reacting under proper reaction conditions as carbanions - enable the installation via nucleophilic addition of a reactive halomethyl fragment onto a preformed carbon-heteroatom bond. The pronounced thermolability represented - since seminal studies by Köbrich - the Achilles' heel of these reagents: the use of Barbier-type methodologies (i.e., the electrophile should be present in the reaction mixture prior to the formation of the carbenoid) was pivotal in order to suppress decomposition through α-elimination processes. Nowadays, the use of low temperatures (-78 °C) guarantees reliable procedures and, significantly, the employment of microreactor technologies allows external trapping to be performed even at higher temperatures as reported by Luisi. We will discuss the α-halomethyllithium-mediated homologations of a series of carbon electrophiles such as carbonyl compounds, imines, esters, Weinreb amides, and isocyanates.
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Affiliation(s)
- Vittorio Pace
- Department of Pharmaceutical Chemistry, University of Vienna, Althanstrasse 14, A-1090, Vienna, Austria
| | - Wolfgang Holzer
- Department of Pharmaceutical Chemistry, University of Vienna, Althanstrasse 14, A-1090, Vienna, Austria
| | - Norbert De Kimpe
- Department of Sustainable Organic Chemistry and Technology, Faculty of Bioscience Engineering Ghent University, Coupure Links 653, B-9000, Ghent, Belgium
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25
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Ford A, Miel H, Ring A, Slattery CN, Maguire AR, McKervey MA. Modern Organic Synthesis with α-Diazocarbonyl Compounds. Chem Rev 2015; 115:9981-10080. [PMID: 26284754 DOI: 10.1021/acs.chemrev.5b00121] [Citation(s) in RCA: 1087] [Impact Index Per Article: 120.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
| | - Hugues Miel
- Almac Discovery Ltd. , David Keir Building, Stranmillis Road, Belfast BT9 5AG, United Kingdom
| | | | | | | | - M Anthony McKervey
- Almac Sciences Ltd. , Almac House, 20 Seagoe Industrial Estate, Craigavon BT63 5QD, United Kingdom
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26
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Shu WM, Ma JR, Zheng KL, Sun HY, Wang M, Yang Y, Wu AX. One-pot synthesis of polyfunctional pyrazoles: an easy access to α-diazoketones from arylglyoxal monohydrates and tosylhydrazine. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.10.044] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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27
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Kosobokov MD, Titanyuk ID, Beletskaya IP. Synthesis of α-aryl-diazophosphonates via palladium-catalyzed cross-coupling of aryl iodides with diethyl diazomethylphosphonate. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2014.10.048] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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28
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Awada H, Robin S, Guillot R, Yazbeck O, Naoufal D, Jaber N, Hachem A, Aitken DJ. Practical Syntheses of Both Enantiomers of the Conformationally Restricted GABA Analoguecis-(2-Aminocyclobutyl)acetic Acid. European J Org Chem 2014. [DOI: 10.1002/ejoc.201402676] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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29
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Garbarino S, Banfi L, Riva R, Basso A. Three in the spotlight: Photoinduced stereoselective synthesis of (Z)-acyloxyacrylamides through a multicomponent approach. J Org Chem 2014; 79:3615-22. [PMID: 24665997 DOI: 10.1021/jo500535f] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We report a straightforward approach to synthesize 2-acyloxyacrylamides, which are useful synthons in organic synthesis. This involves a photoactivated multicomponent reaction, performed both in batch and under continuous flow conditions. This process affords the desired compounds in a stereoselective fashion from readily available starting materials in one step, without the aid of metal catalysis. This paper illustrates the preliminary work, the extensive experiments carried out to understand the limitations of the approach, and the optimization of the conditions for the synthesis of these particular captodative olefins.
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Affiliation(s)
- Silvia Garbarino
- Dipartimento di Chimica e Chimica Industriale, Università degli Studi di Genova , Via Dodecaneso 31, Genova 16146, Italy
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30
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Diehl J, Brückner R. Unexpected rearrangements of rhodium carbenoids containing a pyrrolidin-1-yl group. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2014.02.132] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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31
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Skrobo B, Deska J. Oxonium Ylide Rearrangement of Enzymatically Desymmetrized Glutarates. Org Lett 2013; 15:5998-6001. [DOI: 10.1021/ol402887z] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Benedikt Skrobo
- Department für Chemie, Universität zu Köln, DE-50939 Cologne, Germany
| | - Jan Deska
- Department für Chemie, Universität zu Köln, DE-50939 Cologne, Germany
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32
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Pace V, Castoldi L, Hernáiz MJ, Alcántara AR, Holzer W. Chemoselective oxidative hydrolysis of EWG protected α-arylamino vinyl bromides to α-arylamino-α′-bromoacetones. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2013.05.118] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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33
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Pace V, Hoyos P, Alcántara AR, Holzer W. Chemoselective CaO-mediated acylation of alcohols and amines in 2-methyltetrahydrofuran. CHEMSUSCHEM 2013; 6:905-910. [PMID: 23532956 DOI: 10.1002/cssc.201200922] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2012] [Indexed: 06/02/2023]
Abstract
Calcium oxide is proposed as an innocuous acid scavenger for the chemoselective synthesis of amide- and ester-type compounds. Although these molecules have wide spread applications in organic and pharmaceutical chemistry, and a large number of routes have been designed for their synthesis, the development of more efficient and environmentally friendly acylation strategies remains an ongoing challenge. The use of CaO allows for the stoichiometric acylation of primary alcohols in the presence of phenols or tertiary alcohols; amines can also be subjected to acylation reactions in the presence of hydroxyl groups. Chirality is obtained through acylation if the starting material is an optically pure alcohol or if a chiral acylating agent is used. Furthermore, the use of 2-methyltetrahydrofuran (2-MeTHF), a more ecofriendly solvent, leads to maximized yields. This protocol is successfully applied to the synthesis of an interesting N-aryloxazolidin-2-one intermediate for the preparation of linezolid-type compounds.
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Affiliation(s)
- Vittorio Pace
- Department of Drug and Natural Product Synthesis, Faculty of Life Sciences, University of Vienna, Althanstrasse 14, 1090 Vienna, Austria.
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34
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Pace V, Holzer W, Verniest G, Alcántara AR, De Kimpe N. Chemoselective Synthesis ofN-Substituted α-Amino-α′-chloro KetonesviaChloromethylation of Glycine-Derived Weinreb Amides. Adv Synth Catal 2013. [DOI: 10.1002/adsc.201201043] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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35
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Basso A, Banfi L, Garbarino S, Riva R. Ketene Three-Component Reaction: A Metal-Free Multicomponent Approach to Stereodefined Captodative Olefins. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201209399] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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36
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Basso A, Banfi L, Garbarino S, Riva R. Ketene Three-Component Reaction: A Metal-Free Multicomponent Approach to Stereodefined Captodative Olefins. Angew Chem Int Ed Engl 2013; 52:2096-9. [DOI: 10.1002/anie.201209399] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2012] [Indexed: 12/20/2022]
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37
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Pace V, Castoldi L, Alcántara AR, Holzer W. Highly efficient and environmentally benign preparation of Weinreb amides in the biphasic system 2-MeTHF/water. RSC Adv 2013. [DOI: 10.1039/c3ra41262h] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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38
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Siciliano C, De Marco R, Guidi LE, Spinella M, Liguori A. A One-Pot Procedure for the Preparation of N-9-Fluorenylmethyloxycarbonyl-α-amino Diazoketones from α-Amino Acids. J Org Chem 2012; 77:10575-82. [DOI: 10.1021/jo301657e] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Carlo Siciliano
- Dipartimento di Scienze Farmaceutiche,
Edificio Polifunzionale, Università della Calabria, I-87030 Arcavacata
di Rende, Cosenza, Italy
| | - Rosaria De Marco
- Dipartimento di Scienze Farmaceutiche,
Edificio Polifunzionale, Università della Calabria, I-87030 Arcavacata
di Rende, Cosenza, Italy
| | - Ludovica Evelin Guidi
- Dipartimento di Scienze Farmaceutiche,
Edificio Polifunzionale, Università della Calabria, I-87030 Arcavacata
di Rende, Cosenza, Italy
| | - Mariagiovanna Spinella
- Dipartimento di Scienze Farmaceutiche,
Edificio Polifunzionale, Università della Calabria, I-87030 Arcavacata
di Rende, Cosenza, Italy
| | - Angelo Liguori
- Dipartimento di Scienze Farmaceutiche,
Edificio Polifunzionale, Università della Calabria, I-87030 Arcavacata
di Rende, Cosenza, Italy
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39
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Pace V, Holzer W. A straightforward and general access to α-phthalimido-α′-substituted propan-2-ones. Tetrahedron Lett 2012. [DOI: 10.1016/j.tetlet.2012.07.045] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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40
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Saraireh IA. Synthesis and characterization of chiral di(N-protected-α-amino)diazo-β-diketones from α-diazoketones and imidazolides derived from amino acids. Tetrahedron Lett 2012. [DOI: 10.1016/j.tetlet.2012.01.093] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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41
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Highly chemoselective synthesis of aryl allylic sulfoxides through calcium hypobromite oxidation of aryl allylic sulfides. Tetrahedron Lett 2012. [DOI: 10.1016/j.tetlet.2011.12.046] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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42
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Pace V, Cabrera ÁC, Ferrario V, Sinisterra JV, Ebert C, Gardossi L, Braiuca P, Alcántara AR. Structural bases for understanding the stereoselectivity in ketone reductions with ADH from Thermus thermophilus: A quantitative model. ACTA ACUST UNITED AC 2011. [DOI: 10.1016/j.molcatb.2011.01.017] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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43
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Maurya RA, Park CP, Lee JH, Kim DP. Continuous In Situ Generation, Separation, and Reaction of Diazomethane in a Dual-Channel Microreactor. Angew Chem Int Ed Engl 2011; 50:5952-5. [DOI: 10.1002/anie.201101977] [Citation(s) in RCA: 116] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2011] [Indexed: 11/06/2022]
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44
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Maurya RA, Park CP, Lee JH, Kim DP. Continuous In Situ Generation, Separation, and Reaction of Diazomethane in a Dual-Channel Microreactor. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201101977] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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45
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Pace V, Castoldi L, Hoyos P, Sinisterra JV, Pregnolato M, Sánchez-Montero JM. Highly regioselective control of 1,2-addition of organolithiums to α,β-unsaturated compounds promoted by lithium bromide in 2-methyltetrahydrofuran: a facile and eco-friendly access to allylic alcohols and amines. Tetrahedron 2011. [DOI: 10.1016/j.tet.2011.01.067] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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46
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Seki H, Georg GI. Three-component synthesis of cyclic enaminones via ketene cyclization. Org Lett 2011; 13:2147-9. [PMID: 21456588 DOI: 10.1021/ol200358h] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Cyclic six-membered enaminones were synthesized from three components (bromodiazoacetone, primary amine, and alkyne) in high yields via aza-Michael addition, Wolff rearrangement, and nucleophilic ketene cyclization.
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Affiliation(s)
- Hajime Seki
- Department of Chemistry, Institute for Therapeutics Discovery and Development, College of Pharmacy, University of Minnesota, 717 Delaware Street SE, Minneapolis, Minnesota 55414, United States
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47
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Martin LJ, Marzinzik AL, Ley SV, Baxendale IR. Safe and Reliable Synthesis of Diazoketones and Quinoxalines in a Continuous Flow Reactor. Org Lett 2010; 13:320-3. [DOI: 10.1021/ol1027927] [Citation(s) in RCA: 117] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Laetitia J. Martin
- Novartis Institute for BioMedical Research, Forum 1, 4056 Basel, Switzerland, and Innovative Technology Centre, Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, U.K
| | - Andreas L. Marzinzik
- Novartis Institute for BioMedical Research, Forum 1, 4056 Basel, Switzerland, and Innovative Technology Centre, Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, U.K
| | - Steven V. Ley
- Novartis Institute for BioMedical Research, Forum 1, 4056 Basel, Switzerland, and Innovative Technology Centre, Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, U.K
| | - Ian R. Baxendale
- Novartis Institute for BioMedical Research, Forum 1, 4056 Basel, Switzerland, and Innovative Technology Centre, Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, U.K
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48
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Pinho VD, Burtoloso ACB. Preparation of α,β-Unsaturated Diazoketones Employing a Horner−Wadsworth−Emmons Reagent. J Org Chem 2010; 76:289-92. [DOI: 10.1021/jo1021844] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Vagner D. Pinho
- Instituto de Química de São Carlos, Universidade de São Paulo, CEP 13560-970, São Carlos, SP, Brazil
| | - Antonio C. B. Burtoloso
- Instituto de Química de São Carlos, Universidade de São Paulo, CEP 13560-970, São Carlos, SP, Brazil
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