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Mayorquín-Torres MC, Simoens A, Bonneure E, Stevens CV. Synthetic Methods for Azaheterocyclic Phosphonates and Their Biological Activity: An Update 2004-2024. Chem Rev 2024; 124:7907-7975. [PMID: 38809666 DOI: 10.1021/acs.chemrev.4c00090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2024]
Abstract
The increasing importance of azaheterocyclic phosphonates in the agrochemical, synthetic, and medicinal field has provoked an intense search in the development of synthetic routes for obtaining novel members of this family of compounds. This updated review covers methodologies established since 2004, focusing on the synthesis of azaheterocyclic phosphonates, of which the phosphonate moiety is directly substituted onto to the azaheterocyclic structure. Emphasizing recent advances, this review classifies newly developed synthetic approaches according to the ring size and providing information on biological activities whenever available. Furthermore, this review summarizes information on various methods for the formation of C-P bonds, examining sustainable approaches such as the Michaelis-Arbuzov reaction, the Michaelis-Becker reaction, the Pudovik reaction, the Hirao coupling, and the Kabachnik-Fields reaction. After analyzing the biological activities and applications of azaheterocyclic phosphonates investigated in recent years, a predominant focus on the evaluation of these compounds as anticancer agents is evident. Furthermore, emerging applications underline the versatility and potential of these compounds, highlighting the need for continued research on synthetic methods to expand this interesting family.
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Affiliation(s)
- Martha C Mayorquín-Torres
- SynBioC Research Group, Green Chemistry and Technology, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, B-9000 Ghent, Belgium
| | - Andreas Simoens
- SynBioC Research Group, Green Chemistry and Technology, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, B-9000 Ghent, Belgium
| | - Eli Bonneure
- SynBioC Research Group, Green Chemistry and Technology, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, B-9000 Ghent, Belgium
| | - Christian V Stevens
- SynBioC Research Group, Green Chemistry and Technology, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, B-9000 Ghent, Belgium
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2
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Synthesis of Functionalized Azepines via Cu(I)-Catalyzed Tandem Amination/Cyclization Reaction of Fluorinated Allenynes. Molecules 2022; 27:molecules27165195. [PMID: 36014436 PMCID: PMC9416787 DOI: 10.3390/molecules27165195] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Revised: 08/11/2022] [Accepted: 08/12/2022] [Indexed: 01/17/2023] Open
Abstract
An efficient method for the selective preparation of trifluoromethyl-substituted azepin-2-carboxylates and their phosphorous analogues has been developed via Cu(I)-catalyzed tandem amination/cyclization reaction of functionalized allenynes with primary and secondary amines.
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3
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Viveros-Ceballos JL, Matías-Valdez LA, Sayago FJ, Cativiela C, Ordóñez M. New approaches towards the synthesis of 1,2,3,4-tetrahydro isoquinoline-3-phosphonic acid (Tic P). Amino Acids 2021; 53:451-459. [PMID: 33646426 DOI: 10.1007/s00726-021-02962-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2020] [Accepted: 02/17/2021] [Indexed: 11/25/2022]
Abstract
Two new strategies for the efficient synthesis of racemic 1,2,3,4-tetrahydroisoquinoline-3-phosphonic acid (TicP) (±)-2 have been developed. The first strategy involves the electron-transfer reduction of the easily obtained α,β-dehydro phosphonophenylalanine followed by a Pictet-Spengler cyclization. The second strategy involves a radical decarboxylation-phosphorylation reaction on 1,2,3,4-tetrahydroisoquinoline-3-carboxylic acid (Tic). In both strategies, the highly electrophilic N-acyliminium ion is formed as a key intermediate, and the target compound is obtained in good yield using mild reaction conditions and readily available starting materials, complementing existing methodologies and contributing to the easy accessibility of (±)-2 for further research.
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Affiliation(s)
- José Luis Viveros-Ceballos
- Centro de Investigaciones Químicas-IICBA, Universidad Autónoma del Estado de Morelos, Av. Universidad 1001, 62209, Cuernavaca, Morelos, Mexico.
| | - Lizeth A Matías-Valdez
- Centro de Investigaciones Químicas-IICBA, Universidad Autónoma del Estado de Morelos, Av. Universidad 1001, 62209, Cuernavaca, Morelos, Mexico
| | - Francisco J Sayago
- Departamento de Química Orgánica, ISQCH, Universidad de Zaragoza, CSIC, 50009, Zaragoza, Spain
| | - Carlos Cativiela
- Departamento de Química Orgánica, ISQCH, Universidad de Zaragoza, CSIC, 50009, Zaragoza, Spain
| | - Mario Ordóñez
- Centro de Investigaciones Químicas-IICBA, Universidad Autónoma del Estado de Morelos, Av. Universidad 1001, 62209, Cuernavaca, Morelos, Mexico.
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4
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Lima YR, Da Costa GP, Xavier MCDF, De Moraes MC, Barcellos T, Alves D, Silva MS. Synthesis of
α
‐Hydroxyphosphonates Containing Functionalized 1,2,3‐Triazoles. ChemistrySelect 2020. [DOI: 10.1002/slct.202003761] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Yanka R. Lima
- Laboratório de Síntese Orgânica Limpa - LASOL CCQFA Universidade Federal de Pelotas - UFPel P. O. Box 354 96010-900 Pelotas RS Brazil (MSS
| | - Gabriel P. Da Costa
- Laboratório de Síntese Orgânica Limpa - LASOL CCQFA Universidade Federal de Pelotas - UFPel P. O. Box 354 96010-900 Pelotas RS Brazil (MSS
| | - Maurício C. D. F. Xavier
- Laboratório de Síntese Orgânica Limpa - LASOL CCQFA Universidade Federal de Pelotas - UFPel P. O. Box 354 96010-900 Pelotas RS Brazil (MSS
| | - Maiara C. De Moraes
- Laboratório de Biotecnologia de Produtos Naturais e Sintéticos Universidade de Caxias do Sul - UCS Caxias do Sul RS Brazil
| | - Thiago Barcellos
- Laboratório de Biotecnologia de Produtos Naturais e Sintéticos Universidade de Caxias do Sul - UCS Caxias do Sul RS Brazil
| | - Diego Alves
- Laboratório de Síntese Orgânica Limpa - LASOL CCQFA Universidade Federal de Pelotas - UFPel P. O. Box 354 96010-900 Pelotas RS Brazil (MSS
| | - Márcio S. Silva
- Laboratório de Síntese Orgânica Limpa - LASOL CCQFA Universidade Federal de Pelotas - UFPel P. O. Box 354 96010-900 Pelotas RS Brazil (MSS
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5
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Chen L, Liu X, Zou Y. Recent Advances in the Construction of Phosphorus‐Substituted Heterocycles, 2009–2019. Adv Synth Catal 2020. [DOI: 10.1002/adsc.201901540] [Citation(s) in RCA: 69] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Long Chen
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of AntibioticsChengdu University 168 Hua Guan Road Chengdu 610052 Peoples's Republic of China
| | - Xiao‐Yan Liu
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of AntibioticsChengdu University 168 Hua Guan Road Chengdu 610052 Peoples's Republic of China
| | - Yun‐Xiang Zou
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of AntibioticsChengdu University 168 Hua Guan Road Chengdu 610052 Peoples's Republic of China
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6
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Yamamoto K, Kuriyama M, Onomura O. Anodic Oxidation for the Stereoselective Synthesis of Heterocycles. Acc Chem Res 2020; 53:105-120. [PMID: 31872753 DOI: 10.1021/acs.accounts.9b00513] [Citation(s) in RCA: 122] [Impact Index Per Article: 30.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Stereodefined aliphatic heterocycles are one of the fundamental structural motifs observed in natural products and biologically active compounds. Various strategies for the synthesis of these building blocks based on transition metal catalysis, organocatalysis, and noncatalytic conditions have been developed. Although electrosynthesis has also been utilized for the functionalization of aliphatic heterocycles, stereoselective transformations under electrochemical conditions are still a challenging field in electroorganic chemistry. This Account consists of four main topics related to our recent efforts on the diastereo- and/or enantioselective synthesis of aliphatic heterocycles, especially N-heterocycles, using anodic oxidations as key steps. The first topic is the development of stereoselective synthetic methods for multisubstituted piperidines and pyrrolidines from anodically prepared α-methoxy cyclic amines. Our strategies were based primarily on N-acyliminium ion chemistry, and the key electrochemical transformations were diastereoselective anodic methoxylation, diastereoselective arylation, and anodic deallylative methoxylation. Furthermore, we found a unique property of the N-cyano protecting group that enabled the electrochemical α-methoxylation of α-substituted cyclic amines. The second topic of investigation is memory of chirality in electrochemical decarboxylative methoxylation. We observed that the electrochemical decarboxylative methoxylation of oxazolidine and thiazolidine derivatives with the appropriate N-protecting group occurred in a stereospecific manner even though the reaction proceeded through an sp2 planar carbon center. Our findings demonstrated the first example of memory of chirality in N-acyliminium ion chemistry. The third topic is the synthesis of chiral azabicyclo-N-oxyls and their application to chiral organocatalysis in the electrochemical oxidative kinetic resolution of secondary alcohols. The final topic is stereoselective transformations utilizing anodically generated halogen cations. We investigated the oxidative kinetic resolution of amino alcohol derivatives using anodically generated bromo cations. We also developed an intramolecular C-C bond formation of keto amides, a diastereoselective bromoiminolactonization of α-allyl malonamides, and an oxidative ring expansion reaction of allyl alcohols. It is noteworthy that most of the electrochemical reactions were performed in undivided cells under constant-current conditions, which avoided a complicated reaction setup and was beneficial for a large-scale reaction. In addition, we developed some enantioselective electrochemical transformations that are still challenges in electroorganic chemistry. We hope that our research will contribute to the further development of diastereo- and/or enantioselective transformations and the construction of valuable heterocyclic compounds using an electrochemical approach.
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Affiliation(s)
- Kosuke Yamamoto
- Graduate School of Biomedical Sciences, Nagasaki University, 1-14 Bunkyo-machi, Nagasaki 852-8521, Japan
| | - Masami Kuriyama
- Graduate School of Biomedical Sciences, Nagasaki University, 1-14 Bunkyo-machi, Nagasaki 852-8521, Japan
| | - Osamu Onomura
- Graduate School of Biomedical Sciences, Nagasaki University, 1-14 Bunkyo-machi, Nagasaki 852-8521, Japan
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7
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Smolobochkin AV, Turmanov RA, Gazizov AS, Appazov NO, Burilov AR, Pudovik MA. Synthesis of 2-(Diphenylphosphoryl)pyrrolidine-1-carboxamides Based on the Reaction of 1-(4,4-Diethoxybutyl)ureas with Diphenyl Chlorophosphine. RUSS J GEN CHEM+ 2019. [DOI: 10.1134/s1070363219100244] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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8
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Argüello‐Velasco RO, Sánchez‐Muñoz GK, Viveros‐Ceballos JL, Ordóñez M, Kafarski P. A Straightforward Synthesis of Six‐Membered‐Ring Heterocyclic α‐Aminophosphonic Acids from
N
‐Acyliminium Ions. J Heterocycl Chem 2019. [DOI: 10.1002/jhet.3593] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Rubén Oswaldo Argüello‐Velasco
- Centro de Investigaciones Químicas‐IICBAUniversidad Autónoma del Estado de Morelos Avenue Universidad 1001 62209 Cuernavaca Morelos Mexico
| | - Grecia Katherine Sánchez‐Muñoz
- Centro de Investigaciones Químicas‐IICBAUniversidad Autónoma del Estado de Morelos Avenue Universidad 1001 62209 Cuernavaca Morelos Mexico
| | - José Luis Viveros‐Ceballos
- Centro de Investigaciones Químicas‐IICBAUniversidad Autónoma del Estado de Morelos Avenue Universidad 1001 62209 Cuernavaca Morelos Mexico
| | - Mario Ordóñez
- Centro de Investigaciones Químicas‐IICBAUniversidad Autónoma del Estado de Morelos Avenue Universidad 1001 62209 Cuernavaca Morelos Mexico
| | - Pawel Kafarski
- Department of Bioorganic ChemistryWroclaw University of Science and Technology Wybrzeże Wyspiańskiego 27 50‐370 Wrocław Poland
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9
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Argüello-Velasco R, Dziuk B, Zarychta B, Ordóñez M, Kafarski P. Reactions of Piperazin-2-one, Morpholin-3-one, and Thiomorpholin-3-one with Triethyl Phosphite Prompted by Phosphoryl Chloride: Scope and Limitations. ACS OMEGA 2019; 4:9056-9064. [PMID: 31459993 PMCID: PMC6648091 DOI: 10.1021/acsomega.9b01137] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/22/2019] [Accepted: 05/13/2019] [Indexed: 06/10/2023]
Abstract
The reaction of the title lactams with triethyl phosphite prompted by phosphoryl chloride provided six-membered ring heterocyclic phosphonates or bisphosphonates. These novel scaffolds might be of interest as building blocks in medicinal chemistry. The course of the reaction was dependent on the structure of the used substrate. Thus, morpholin-3-one and thiomorpholin-3-one readily provided the corresponding 1,1-bisphosphonates (compounds 1, 2, 7, 14 and 16), whereas the protection of their nitrogen atom resulted in the formation of dehydrophosphonates (compounds 5, 6, and 8). Piperazin-2-one reacted differently yielding mixture of cis- and trans- piperazine-2,3-diyl-bisphosphonates (compounds 10 and 11). Since cytosine could be considered as an analogue of piperin-2-one, its ditosyl derivative 18 was used as a substrate affording compound 19 being a product of phosphite addition to double bond. In dependence of their structures, hydrolysis of the obtained diethyl phosphonates resulted either in corresponding cyclic phosphonic acids or in the degradation of carbon-to-phosphorus bond.
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Affiliation(s)
| | - Błażej Dziuk
- Department
of Crystallography, Faculty of Chemistry, University of Opole, 45-040 Opole, Poland
| | - Bartosz Zarychta
- Department
of Crystallography, Faculty of Chemistry, University of Opole, 45-040 Opole, Poland
| | - Mario Ordóñez
- Centro
de Investigaciones Químicas—IICBA, Universidad Autónoma del Estado de Morelos, 62209 Cuernavaca, Morelos, Mexico
| | - Paweł Kafarski
- Department
of Bioorganic Chemistry, Wrocław University
of Science and Technology, 50-370 Wrocław, Poland
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10
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Murashkina AV, Mitrofanov AY, Grishin YK, Rybakov VB, Beletskaya IP. Convenient Au(III)-Catalysed Synthesis of 1-Alkyl-3-diethoxy-phosphoryl-1,2,3,4-tetrahydroisoquinolines. ChemistrySelect 2018. [DOI: 10.1002/slct.201801456] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Arina V. Murashkina
- Chemistry Department; Moscow State University; Leninskie Gory, GSP-3 Moscow 119991 Russia
| | | | - Yuri K. Grishin
- Chemistry Department; Moscow State University; Leninskie Gory, GSP-3 Moscow 119991 Russia
| | - Victor B. Rybakov
- Chemistry Department; Moscow State University; Leninskie Gory, GSP-3 Moscow 119991 Russia
| | - Irina P. Beletskaya
- Chemistry Department; Moscow State University; Leninskie Gory, GSP-3 Moscow 119991 Russia
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11
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Viveros-Ceballos JL, Martínez-Toto EI, Eustaquio-Armenta C, Cativiela C, Ordóñez M. First and Highly Stereoselective Synthesis of Both Enantiomers of Octahydroindole-2-phosphonic Acid (OicP). European J Org Chem 2017. [DOI: 10.1002/ejoc.201701330] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- José Luis Viveros-Ceballos
- Centro de Investigaciones Químicas - IICBA; Universidad Autónoma del Estado de Morelos; Av. Universidad 1001 62209 Cuernavaca, Morelos Mexico
| | - Erick Iván Martínez-Toto
- Centro de Investigaciones Químicas - IICBA; Universidad Autónoma del Estado de Morelos; Av. Universidad 1001 62209 Cuernavaca, Morelos Mexico
| | - César Eustaquio-Armenta
- Centro de Investigaciones Químicas - IICBA; Universidad Autónoma del Estado de Morelos; Av. Universidad 1001 62209 Cuernavaca, Morelos Mexico
| | - Carlos Cativiela
- Departamento de Química Orgánica; Universidad de Zaragoza - CSIC, ISQCH; 50009 Zaragoza Spain
| | - Mario Ordóñez
- Centro de Investigaciones Químicas - IICBA; Universidad Autónoma del Estado de Morelos; Av. Universidad 1001 62209 Cuernavaca, Morelos Mexico
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12
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Cervera-Villanueva JMJ, Viveros-Ceballos JL, Ordóñez M. First practical synthesis of novel 1-phosphonylated pyrrolo[1,2-a]pyrazine derivatives. HETEROATOM CHEMISTRY 2017. [DOI: 10.1002/hc.21398] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
| | - José Luis Viveros-Ceballos
- Centro de Investigaciones Químicas-IICBA; Universidad Autónoma del Estado de Morelos; Cuernavaca Morelos Mexico
| | - Mario Ordóñez
- Centro de Investigaciones Químicas-IICBA; Universidad Autónoma del Estado de Morelos; Cuernavaca Morelos Mexico
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13
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Pallitsch K, Happl B, Stieger C. Determination of the Absolute Configuration of (-)-Hydroxynitrilaphos and Related Biosynthetic Questions. Chemistry 2017; 23:15655-15665. [PMID: 28703941 DOI: 10.1002/chem.201702904] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2017] [Indexed: 12/23/2022]
Abstract
The ongoing search for bioactive natural products has led to the development of new genome-based screening approaches to identify possible phosphonate producing microorganisms. From the identified phosphonate producers, several until now unknown phosphonic acid natural products were isolated, including (hydroxy)nitrilaphos (4 and 5) and (hydroxy)phosphonocystoximate (7 and 6). We present the synthesis of phosphonocystoximate via an aldoxime intermediate. Chlorination and coupling with methyl N-acetylcysteinate furnished 6 after global deprotection. The obtained experimental data confirm the previously assigned structure of the natural product. We were also able to determine the absolute configuration of (-)-hydroxynitrilaphos. Chiral resolution of diethyl cyanohydroxymethylphosphonate (24) with Noe's lactol furnished both enantiomers of 4. Conversion of (+)-24 to (R)-2-amino-1-hydroxyethylphosphonic acid by reduction of the cyano-group showed (-)-hydroxynitrilaphos ultimately to be S-configured. Further, we present a 13 C-isotope labeling strategy for 4 and 5 that will possibly solve the question of whether hydroxynitrilaphos is a biosynthetic intermediate or a downstream product of hydroxyphosphonocystoximate biosynthesis.
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Affiliation(s)
- Katharina Pallitsch
- Institute of Organic Chemistry, University of Vienna, Währingerstraße 38, 1090, Vienna, Austria
| | - Barbara Happl
- Institute of Organic Chemistry, University of Vienna, Währingerstraße 38, 1090, Vienna, Austria
| | - Christian Stieger
- Institute of Organic Chemistry, University of Vienna, Währingerstraße 38, 1090, Vienna, Austria
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14
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Smolobochkin AV, Gazizov AS, Melyashova AS, Voronina JK, Strelnik AG, Vatsadze SZ, Burilov AR, Pudovik MA, Fedorova OA, Sinyashin OG. Tandem intramolecular cyclisation/1,3-aryl shift in N-(4,4-diethoxybutyl)-1-arylmethanimines (Kazan reaction): synthesis of 3-benzylidene-1-pyrrolines. RSC Adv 2017. [DOI: 10.1039/c7ra11216e] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A novel tandem reaction, which transforms N-(4,4-diethoxybutyl)imines to 3-arylidene-1-pyrrolines via intramolecular Mannich reaction/[1,3]-sigmatropic rearrangement of the aryl fragment is described.
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15
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Synthesis and kinetic study of N-(1-methyl-3-phenyl-propane)-phthalimide (NP) by phase-transfer catalysis assisted by ultrasound irradiation. RESEARCH ON CHEMICAL INTERMEDIATES 2016. [DOI: 10.1007/s11164-016-2505-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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16
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Practical and Efficient Synthesis of α-Aminophosphonic Acids Containing 1,2,3,4-Tetrahydroquinoline or 1,2,3,4-Tetrahydroisoquinoline Heterocycles. Molecules 2016; 21:molecules21091140. [PMID: 27589713 PMCID: PMC6273407 DOI: 10.3390/molecules21091140] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2016] [Revised: 08/15/2016] [Accepted: 08/25/2016] [Indexed: 11/25/2022] Open
Abstract
We report here a practical and efficient synthesis of α-aminophosphonic acid incorporated into 1,2,3,4-tetrahydroquinoline and 1,2,3,4-tetrahydroisoquinoline heterocycles, which could be considered to be conformationally constrained analogues of pipecolic acid. The principal contribution of this synthesis is the introduction of the phosphonate group in the N-acyliminium ion intermediates, obtained from activation of the quinoline and isoquinoline heterocycles or from the appropriate δ-lactam with benzyl chloroformate. Finally, the hydrolysis of phosphonate moiety with simultaneous cleavage of the carbamate afforded the target compounds.
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17
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Viveros-Ceballos JL, Ordóñez M, Sayago FJ, Jiménez AI, Cativiela C. First Synthesis of (R)- and (S)-1,2,3,4-Tetrahydroisoquinoline-3-phosphonic Acid (TicP) Using a Pictet-Spengler Reaction. European J Org Chem 2016. [DOI: 10.1002/ejoc.201600313] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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