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Ramos A, Carrillo-Hermosilla F, Fernández-Galán R, Elorriaga D, Naranjo J, Antiñolo A, García-Vivó D. ZnEt 2 as a Precatalyst for the Addition of Alcohols to Carbodiimides. Organometallics 2022; 41:2949-2957. [DOI: 10.1021/acs.organomet.2c00372] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Indexed: 11/15/2022]
Affiliation(s)
- Alberto Ramos
- Departamento de Química Inorgánica, Orgánica y Bioquímica-Centro de Innovación en Química Avanzada (ORFEO−CINQA). Universidad de Castilla-La Mancha, Campus Universitario, E-13071Ciudad Real, Spain
| | - Fernando Carrillo-Hermosilla
- Departamento de Química Inorgánica, Orgánica y Bioquímica-Centro de Innovación en Química Avanzada (ORFEO−CINQA). Universidad de Castilla-La Mancha, Campus Universitario, E-13071Ciudad Real, Spain
| | - Rafael Fernández-Galán
- Departamento de Química Inorgánica, Orgánica y Bioquímica-Centro de Innovación en Química Avanzada (ORFEO−CINQA). Universidad de Castilla-La Mancha, Campus Universitario, E-13071Ciudad Real, Spain
| | - David Elorriaga
- Departamento de Química Inorgánica, Orgánica y Bioquímica-Centro de Innovación en Química Avanzada (ORFEO−CINQA). Universidad de Castilla-La Mancha, Campus Universitario, E-13071Ciudad Real, Spain
| | - Jesús Naranjo
- Departamento de Química Inorgánica, Orgánica y Bioquímica-Centro de Innovación en Química Avanzada (ORFEO−CINQA). Universidad de Castilla-La Mancha, Campus Universitario, E-13071Ciudad Real, Spain
| | - Antonio Antiñolo
- Departamento de Química Inorgánica, Orgánica y Bioquímica-Centro de Innovación en Química Avanzada (ORFEO−CINQA). Universidad de Castilla-La Mancha, Campus Universitario, E-13071Ciudad Real, Spain
| | - Daniel García-Vivó
- Departamento de Química Orgánica e Inorgánica/IUQOEM, Universidad de Oviedo, E-33071Oviedo, Spain
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2
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Carrillo-Hermosilla F, Fernández-Galán R, Ramos A, Elorriaga D. Guanidinates as Alternative Ligands for Organometallic Complexes. Molecules 2022; 27:5962. [PMID: 36144698 PMCID: PMC9501388 DOI: 10.3390/molecules27185962] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Revised: 09/06/2022] [Accepted: 09/07/2022] [Indexed: 11/30/2022] Open
Abstract
For decades, ligands such as phosphanes or cyclopentadienyl ring derivatives have dominated Coordination and Organometallic Chemistry. At the same time, alternative compounds have emerged that could compete either for a more practical and accessible synthesis or for greater control of steric and electronic properties. Guanidines, nitrogen-rich compounds, appear as one such potential alternatives as ligands or proligands. In addition to occurring in a plethora of natural compounds, and thus in compounds of pharmacological use, guanidines allow a wide variety of coordination modes to different metal centers along the periodic table, with their monoanionic chelate derivatives being the most common. In this review, we focused on the organometallic chemistry of guanidinato compounds, discussing selected examples of coordination modes, reactivity and uses in catalysis or materials science. We believe that these amazing ligands offer a new promise in Organometallic Chemistry.
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Affiliation(s)
- Fernando Carrillo-Hermosilla
- Departamento de Química Inorgánica, Orgánica y Bioquímica—Centro de Innovación en Química Avanzada (ORFEO−CINQA), Facultad de Ciencias y Tecnologías Químicas, Universidad de Castilla-La Mancha, 13071 Ciudad Real, Spain
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3
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Bangade VM, Dadmal TL, Popatkar BB, Mali PR, Meshram HM. One Pot Catalyst‐free Synthesis of Substituted Di‐amino N‐tosyl Benzoyl Thiazoles byRegioselective C−N Bond Cleavage and Its Anticancer Activity. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100675] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Vikas M. Bangade
- Department of Chemistry The Institute of Science, Mumbai Dr.HomiBhabha State University Mumbai 15, Madame Cama Road Mumbai-32 400 032 India
- Medicinal Chemistry and Pharmacology Division CSIR-Indian Institute of Chemical Technology, Hyderabad Uppal Road, Tarnaka Hyderabad Telangana 500007 India
| | - Tulshiram L. Dadmal
- Department of Chemistry Government Vidarbha Institute of Science and Humanities Amravati Maharashtra 444604 India
| | - Bhushan B. Popatkar
- Department of Chemistry University of Mumbai Vidyanagari, Kalina, Santacruz (E) Mumbai Maharashtra 400 098 India
| | - Prakash R. Mali
- Medicinal Chemistry and Pharmacology Division CSIR-Indian Institute of Chemical Technology, Hyderabad Uppal Road, Tarnaka Hyderabad Telangana 500007 India
| | - Harshadas M. Meshram
- Medicinal Chemistry and Pharmacology Division CSIR-Indian Institute of Chemical Technology, Hyderabad Uppal Road, Tarnaka Hyderabad Telangana 500007 India
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4
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Bangade VM, Mali PR, Meshram HM. Synthesis of Potent Anticancer Substituted 5-Benzimidazol-2-amino Thiazoles Controlled by Bifunctional Hydrogen Bonding under Microwave Irradiations. J Org Chem 2021; 86:6056-6065. [PMID: 33872008 DOI: 10.1021/acs.joc.0c02542] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Benzimidazol-amino thiazoles are synthesized under microwave irradiations using benzimidazole phenyl thiourea and 2-bromoacetophenone. Bifunctional hydrogen bonding plays an important role in chemical conversion. The reaction was carried out by C-C bond formation, followed by C-N bond cleavage and simultaneous migration of the benzimidazole ring. This reaction is novel and efficient for the synthesis of benzimidazol-amino thiazoles in which microwaves were used as driving forces. Synthesis of the product was controlled by double hydrogen bonding which is practically confirmed by the synthesis of routine imino-thiazole as an alternative product in the simple acidic condition. The simple acidic condition is neither responsible nor sufficient for optimum conversion of the benzimidazole migrated product. The synthesized products benzimidazole amino thiazoles D4 (IC50 = 4.207 μM) and D8 (IC50 = 2.398 μM) show interesting anticancer activities for human lung cancer with reference to doxorubicin (IC50 = 1.750 μM).
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Affiliation(s)
- Vikas M Bangade
- Medicinal Chemistry and Pharmacology Division, Indian Institute of Chemical Technology, Hyderabad, 500 607, India.,Department of Chemistry, The Institute of Science, Mumbai, Dr. Homi Bhabha State University, Mumbai, 15, Madame Cama Road, Mumbai, 32, India
| | - Prakash R Mali
- Medicinal Chemistry and Pharmacology Division, Indian Institute of Chemical Technology, Hyderabad, 500 607, India
| | - Harshadas M Meshram
- Medicinal Chemistry and Pharmacology Division, Indian Institute of Chemical Technology, Hyderabad, 500 607, India
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5
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Koide K, Yi J, Kuboki M, Yamazoe S, Nakatani N, Nomura K. Synthesis and Structural Analysis of Four Coordinate (Arylimido)niobium(V) Dimethyl Complexes Containing Phenoxide Ligand: MAO-Free Ethylene Polymerization by the Cationic Nb(V)–Methyl Complex. Organometallics 2020. [DOI: 10.1021/acs.organomet.0c00567] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Koji Koide
- Department of Chemistry, Tokyo Metropolitan University, 1-1 minami Osawa, Hachioiji, Tokyo 192-0397, Japan
| | - Jun Yi
- Department of Chemistry, Tokyo Metropolitan University, 1-1 minami Osawa, Hachioiji, Tokyo 192-0397, Japan
| | - Masaharu Kuboki
- Department of Chemistry, Tokyo Metropolitan University, 1-1 minami Osawa, Hachioiji, Tokyo 192-0397, Japan
| | - Seiji Yamazoe
- Department of Chemistry, Tokyo Metropolitan University, 1-1 minami Osawa, Hachioiji, Tokyo 192-0397, Japan
| | - Naoki Nakatani
- Department of Chemistry, Tokyo Metropolitan University, 1-1 minami Osawa, Hachioiji, Tokyo 192-0397, Japan
| | - Kotohiro Nomura
- Department of Chemistry, Tokyo Metropolitan University, 1-1 minami Osawa, Hachioiji, Tokyo 192-0397, Japan
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6
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Kuboki M, Nomura K. (Arylimido)niobium(V) Complexes Containing 2-Pyridylmethylanilido Ligand as Catalyst Precursors for Ethylene Dimerization That Proceeds via Cationic Nb(V) Species. Organometallics 2019. [DOI: 10.1021/acs.organomet.9b00017] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Masaharu Kuboki
- Department of Chemistry, Graduate School of Science, Tokyo Metropolitan University, 1-1 Minami Osawa, Hachioji, Tokyo 192-0397, Japan
| | - Kotohiro Nomura
- Department of Chemistry, Graduate School of Science, Tokyo Metropolitan University, 1-1 Minami Osawa, Hachioji, Tokyo 192-0397, Japan
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7
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Moreno S, Ramos A, Carrillo-Hermosilla F, Rodríguez-Diéguez A, García-Vivó D, Fernández-Galán R, Antiñolo A. Selective Three-Component Coupling for CO 2 Chemical Fixation to Boron Guanidinato Compounds. Inorg Chem 2018; 57:8404-8413. [PMID: 29949350 DOI: 10.1021/acs.inorgchem.8b01068] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A selective three-component coupling was employed to fix carbon dioxide to boron guanidinato compounds. The one-pot reaction of carbon dioxide, carbodiimides, and borylamines (ArNH)BC8H14 afforded the corresponding 1,2-adducts {R(H)N}C{N(Ar)}(NR)(CO2)BC8H14. Alternatively, the reaction with p-MeOC6H4NC or 2,6-Me2C6H3NC gave the corresponding isocyanide 1,1-adducts { i-PrHN}C{N(p-Me-C6H4)}(N i-Pr){CNAr}BC8H14. The molecular structures of products (2,6- i-Pr2C6H3NH)BC8H14 7, { i-Pr(H)N}C{N(p-MeC6H4)}(N i-Pr)(CO2)BC8H14 9, {Cy(H)N}C{N( p-MeC6H4)}(Cy)(CO2)BC8H14 13, and { i-PrHN}C{N( p-MeC6H4)}(N i-Pr){CNR″}BC8H14 (R″ = p-MeOC6H4, 2,6-Me2C6H3) 14 and 15 were established by X-ray diffraction. Density functional theory calculations at the M05-2X level of theory revealed that CO2 fixation and formation of the corresponding adduct is exothermic and proceeds via a nonchelate boron guanidinato intermediate.
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Affiliation(s)
- Sonia Moreno
- Departamento de Química Inorgánica, Orgánica y Bioquímica-Centro de Innovación en Química Avanzada (ORFEO-CINQA) , Universidad de Castilla-La Mancha , Campus Universitario , E-13071 Ciudad Real , Spain
| | - Alberto Ramos
- Departamento de Química Inorgánica, Orgánica y Bioquímica , Instituto Regional de Investigación Científica Aplicada, Universidad de Castilla-La Mancha , Campus Universitario , E-13071 Ciudad Real , Spain
| | - Fernando Carrillo-Hermosilla
- Departamento de Química Inorgánica, Orgánica y Bioquímica-Centro de Innovación en Química Avanzada (ORFEO-CINQA) , Universidad de Castilla-La Mancha , Campus Universitario , E-13071 Ciudad Real , Spain
| | - Antonio Rodríguez-Diéguez
- Departamento de Química Inorgánica, Facultad de Ciencias , Universidad de Granada , Avenida de la Fuente Nueva S/N , 18071 Granada , Spain
| | - Daniel García-Vivó
- Departamento de Química Orgánica e Inorgánica/IUQOEM , Universidad de Oviedo , E-33071 Oviedo , Spain
| | - Rafael Fernández-Galán
- Departamento de Química Inorgánica, Orgánica y Bioquímica-Centro de Innovación en Química Avanzada (ORFEO-CINQA) , Universidad de Castilla-La Mancha , Campus Universitario , E-13071 Ciudad Real , Spain
| | - Antonio Antiñolo
- Departamento de Química Inorgánica, Orgánica y Bioquímica-Centro de Innovación en Química Avanzada (ORFEO-CINQA) , Universidad de Castilla-La Mancha , Campus Universitario , E-13071 Ciudad Real , Spain
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8
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Srisupap N, Wised K, Tsutsumi K, Nomura K. Synthesis of (Arylmido)niobium(V) Complexes Containing Ketimide, Phenoxide Ligands, and Some Reactions with Phenols and Alcohols. ACS OMEGA 2018; 3:6166-6181. [PMID: 31458800 PMCID: PMC6644436 DOI: 10.1021/acsomega.8b01065] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/19/2018] [Accepted: 05/28/2018] [Indexed: 06/10/2023]
Abstract
Reactions of Nb(NAr)(N=C t Bu2)3 (3a, Ar = 2,6-Me2C6H3) with 1.0, 2.0, or 3.0 equiv of Ar'OH (Ar' = 2,6- i Pr2C6H3) afforded Nb(NAr)(N=C t Bu2)2(OAr'), Nb(NAr)(N=C t Bu2)(OAr')2, or Nb(NAr)(OAr')3, respectively (at 25 °C), whereas the reaction with 2.0 equiv of 2,6- t Bu2C6H3OH afforded Nb(NAr)(N=C t Bu2)2(O-2,6- t Bu2C6H3) upon heating (70 °C) without the formation of bis(phenoxide) and the reaction of 3a with 2.0 equiv of 2,4,6-Me3C6H2OH afforded Nb(NAr)(N=C t Bu2)(O-2,4,6-Me3C6H2)2(HN=C t Bu2). Similar reactions of 3a with 1.0 equiv of (CF3)3COH or 2.0 equiv of (CF3)2CHOH afforded Nb(NAr)(N=C t Bu2)2[OC(CF3)3](HN=C t Bu2) or Nb(NAr)(N=C t Bu2)[OCH(CF3)2]2(HN=C t Bu2), respectively. On the basis of their structural analyses and the reaction chemistry, it was suggested that these reactions proceeded via coordination of phenol (alcohol) to Nb and the subsequent proton (hydrogen) transfer to the ketimide (N=C t Bu2) ligand. The reaction of Nb(NAr)(N=C t Bu2)2(OAr') with 1.0 equiv of 2,4,6-Me3C6H2OH gave the disproportionation products Nb(NAr)(N=C t Bu2)(OAr')2 and Nb(NAr)(N=C t Bu2)(O-2,4,6-Me3C6H2)2(HN=C t Bu2) with 1:1 ratio, clearly indicating the presence of the above mechanism and the fast equilibrium (between the ketimide and the phenoxide). The reaction of 3a with 1.0 or 2.0 equiv of C6F5OH afforded Nb(N=C t Bu2)2(OC6F5)3(HN=C t Bu2) as the sole isolated product, which was formed from once generated Nb(NAr)(N=C t Bu2)2(OC6F5)(HN=C t Bu2) by treating with C6F5OH.
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Affiliation(s)
- Natta Srisupap
- Department of Chemistry,
Faculty of Science, Tokyo Metropolitan University, 1-1 Minami Osawa, Hachioji, Tokyo 192-0397, Japan
| | - Kritdikul Wised
- Department of Chemistry,
Faculty of Science, Tokyo Metropolitan University, 1-1 Minami Osawa, Hachioji, Tokyo 192-0397, Japan
| | - Ken Tsutsumi
- Department of Chemistry,
Faculty of Science, Tokyo Metropolitan University, 1-1 Minami Osawa, Hachioji, Tokyo 192-0397, Japan
| | - Kotohiro Nomura
- Department of Chemistry,
Faculty of Science, Tokyo Metropolitan University, 1-1 Minami Osawa, Hachioji, Tokyo 192-0397, Japan
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9
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Ramos A, Antiñolo A, Carrillo-Hermosilla F, Fernández-Galán R, Montero-Rama MDP, Villaseñor E, Rodríguez-Diéguez A, García-Vivó D. Insertion reactions of small unsaturated molecules in the N-B bonds of boron guanidinates. Dalton Trans 2017; 46:10281-10299. [PMID: 28737819 DOI: 10.1039/c7dt02081c] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report here 1,1- and 1,2-insertion reactions of small unsaturated molecules in the N-B bonds of two boron guanidinates, (Me2N)C(NiPr)2BCy2 (1) and {iPr(H)N}C(NiPr){N(p-tBu-C6H4)}BCy2 (2), and two bisboron guanidinates(2-), {iPr(BCy2)N}C(NiPr){N(p-tBu-C6H4)}BCy2 (3) and {iPr(C8H14B)N}C(NiPr){N(p-Me-C6H4)}BC8H14 (4), the latter being prepared for the first time by double deprotonation of the corresponding guanidine with the 9-borabicyclo[3.3.1]nonane dimer, (H-BC8H14)2. Compounds 1-4 easily insert aromatic isonitriles, XylNC (Xyl = 2,6-Me2-C6H3) and (p-MeO-C6H4)NC, to give the expected diazaboroles 5-12, some of them being structurally characterised by X-ray diffraction. Interestingly, the BC8H14 derivatives 11 and 12 are in a fast temperature-dependent equilibrium with the de-insertion products, whose thermodynamic parameters are reported here. A correlation between these equilibria and the puckered heterocyclic structure found in the solid state for 11, and confirmed by DFT calculations, is also established. Reactions of the aforementioned guanidinates with CO are more sluggish or even precluded, and only one product, {iPr(H)N}C{N(p-tBu-C6H4)}(NiPr)(CO)BCy2 (13), could be isolated in moderate yields. The 1,2-insertions of benzaldehyde in compounds 1, 2 and 4 are reversible reactions in all cases, and only one of the insertion products, {iPr(H)N}C{N(p-tBu-C6H4)}(NiPr)(PhHCO)BCy2 (16a), was isolated and diffractrometrically characterised. Likewise, CO2 reversibly inserts into a N-B bond of 2 to give {iPr(H)N}C{N(p-tBu-C6H4)}(NiPr)(CO2)BCy2 (19) with a conversion of ca. 9%. In all these equilibria, de-insertion is always favoured upon increasing the temperature.
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Affiliation(s)
- Alberto Ramos
- Departamento de Química Inorgánica, Orgánica y Bioquímica, Instituto Regional de Investigación Científica Aplicada, Universidad de Castilla-La Mancha, Campus Universitario, E-13071 Ciudad Real, Spain.
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10
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Maestre MC, Gratal PB, Mosquera MEG, Cuenca T, Jiménez G. Suitable Approach to Prepare N‐Substituted Niobium Complexes – Study of the Factors Controlling the Process. Eur J Inorg Chem 2017. [DOI: 10.1002/ejic.201601360] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- M. Carmen Maestre
- Department of Química Orgánica y Química Inorgánica Universidad de Alcalá Campus Universitario 28871 Alcalá de Henares Spain
| | - Patricia B. Gratal
- Department of Química Orgánica y Química Inorgánica Universidad de Alcalá Campus Universitario 28871 Alcalá de Henares Spain
| | - Marta E. G. Mosquera
- Department of Química Orgánica y Química Inorgánica Universidad de Alcalá Campus Universitario 28871 Alcalá de Henares Spain
| | - Tomás Cuenca
- Department of Química Orgánica y Química Inorgánica Universidad de Alcalá Campus Universitario 28871 Alcalá de Henares Spain
| | - Gerardo Jiménez
- Department of Química Orgánica y Química Inorgánica Universidad de Alcalá Campus Universitario 28871 Alcalá de Henares Spain
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11
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Martínez A, Moreno-Blázquez S, Rodríguez-Diéguez A, Ramos A, Fernández-Galán R, Antiñolo A, Carrillo-Hermosilla F. Simple ZnEt2as a catalyst in carbodiimide hydroalkynylation: structural and mechanistic studies. Dalton Trans 2017; 46:12923-12934. [DOI: 10.1039/c7dt02700a] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Simple ZnEt2is an efficient catalyst for the addition of terminal alkynes to carbodiimides, through amidinate complexes, and consecutive isocyanate addition and intramolecular cyclohydroamination.
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Affiliation(s)
- Antonio Martínez
- Centro de Innovación en Química Avanzada (ORFEO-CINQA)
- Dpto. de Química Inorgánica
- Orgánica y Bioquímica
- Facultad de Ciencias y Tecnologías Químicas
- Universidad de Castilla-La Mancha
| | - Sonia Moreno-Blázquez
- Centro de Innovación en Química Avanzada (ORFEO-CINQA)
- Dpto. de Química Inorgánica
- Orgánica y Bioquímica
- Facultad de Ciencias y Tecnologías Químicas
- Universidad de Castilla-La Mancha
| | | | - Alberto Ramos
- Centro de Innovación en Química Avanzada (ORFEO-CINQA)
- Dpto. de Química Inorgánica
- Orgánica y Bioquímica
- Facultad de Ciencias y Tecnologías Químicas
- Universidad de Castilla-La Mancha
| | - Rafael Fernández-Galán
- Centro de Innovación en Química Avanzada (ORFEO-CINQA)
- Dpto. de Química Inorgánica
- Orgánica y Bioquímica
- Facultad de Ciencias y Tecnologías Químicas
- Universidad de Castilla-La Mancha
| | - Antonio Antiñolo
- Centro de Innovación en Química Avanzada (ORFEO-CINQA)
- Dpto. de Química Inorgánica
- Orgánica y Bioquímica
- Facultad de Ciencias y Tecnologías Químicas
- Universidad de Castilla-La Mancha
| | - Fernando Carrillo-Hermosilla
- Centro de Innovación en Química Avanzada (ORFEO-CINQA)
- Dpto. de Química Inorgánica
- Orgánica y Bioquímica
- Facultad de Ciencias y Tecnologías Químicas
- Universidad de Castilla-La Mancha
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12
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Antiñolo A, Carrillo-Hermosilla F, Fernández-Galán R, Martínez-Ferrer J, Alonso-Moreno C, Bravo I, Moreno-Blázquez S, Salgado M, Villaseñor E, Albaladejo J. Tris(pentafluorophenyl)borane as an efficient catalyst in the guanylation reaction of amines. Dalton Trans 2016; 45:10717-29. [PMID: 27278089 DOI: 10.1039/c6dt01237j] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Tris(pentafluorophenyl)borane, [B(C6F5)3], has been used as an efficient catalyst in the guanylation reaction of amines with carbodiimide under mild conditions. A combined approach involving NMR spectroscopy and DFT calculations was employed to gain a better insight into the mechanistic features of this process. The results allowed us to propose a new Lewis acid-assisted Brønsted acidic pathway for the guanylation reaction. The process starts with the interaction of tris(pentafluorphenyl)borane and the amine to form the corresponding adduct, [(C6F5)3B-NRH2] , followed by a straightforward proton transfer to one of the nitrogen atoms of the carbodiimide, (i)PrN[double bond, length as m-dash]C[double bond, length as m-dash]N(i)Pr, to produce, in two consequent steps, a guanidine-borane adduct, [(C6F5)3B-NRC(N(i)PrH)2] . The rupture of this adduct liberates the guanidine product RNC(N(i)PrH)2 and interaction with additional amine restarts the catalytic cycle. DFT studies have been carried out in order to study the thermodynamic characteristics of the proposed pathway. Significant borane adducts with amines and guanidines have been isolated and characterized by multinuclear NMR in order to study the N-B interaction and to propose the existence of possible Frustrated Lewis Pairs. Additionally, the molecular structures of significant components of the catalytic cycle, namely 4-tert-butylaniline-[B(C6F5)3] adduct and both free and [B(C6F5)3]-bonded 1-(phenyl)-2,3-diisopropylguanidine, and respectively, have been established by X-ray diffraction.
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Affiliation(s)
- Antonio Antiñolo
- Centro de Innovación en Química Avanzada (ORFEO-CINQA), Departamento de Química Inorgánica, Orgánica y Bioquímica, Facultad de Ciencias y Tecnologías Químicas, Universidad de Castilla-La Mancha, Campus Universitario, E-13071 Ciudad Real, Spain.
| | - Fernando Carrillo-Hermosilla
- Centro de Innovación en Química Avanzada (ORFEO-CINQA), Departamento de Química Inorgánica, Orgánica y Bioquímica, Facultad de Ciencias y Tecnologías Químicas, Universidad de Castilla-La Mancha, Campus Universitario, E-13071 Ciudad Real, Spain.
| | - Rafael Fernández-Galán
- Centro de Innovación en Química Avanzada (ORFEO-CINQA), Departamento de Química Inorgánica, Orgánica y Bioquímica, Facultad de Ciencias y Tecnologías Químicas, Universidad de Castilla-La Mancha, Campus Universitario, E-13071 Ciudad Real, Spain.
| | - Jaime Martínez-Ferrer
- Centro de Innovación en Química Avanzada (ORFEO-CINQA), Departamento de Química Inorgánica, Orgánica y Bioquímica, Facultad de Ciencias y Tecnologías Químicas, Universidad de Castilla-La Mancha, Campus Universitario, E-13071 Ciudad Real, Spain.
| | - Carlos Alonso-Moreno
- Centro de Innovación en Química Avanzada (ORFEO-CINQA), Departamento de Química Inorgánica, Orgánica y Bioquímica, Facultad de Farmacia, Universidad de Castilla-La Mancha, Campus Universitario de Albacete, 02071-Albacete, Spain
| | - Iván Bravo
- Departamento de Química-Física, Facultad de Farmacia, Universidad de Castilla-La Mancha, Campus Universitario de Albacete, 02071-Albacete, Spain
| | - Sonia Moreno-Blázquez
- Centro de Innovación en Química Avanzada (ORFEO-CINQA), Departamento de Química Inorgánica, Orgánica y Bioquímica, Facultad de Ciencias y Tecnologías Químicas, Universidad de Castilla-La Mancha, Campus Universitario, E-13071 Ciudad Real, Spain.
| | - Manuel Salgado
- Centro de Innovación en Química Avanzada (ORFEO-CINQA), Departamento de Química Inorgánica, Orgánica y Bioquímica, Facultad de Ciencias y Tecnologías Químicas, Universidad de Castilla-La Mancha, Campus Universitario, E-13071 Ciudad Real, Spain.
| | - Elena Villaseñor
- Centro de Innovación en Química Avanzada (ORFEO-CINQA), Departamento de Química Inorgánica, Orgánica y Bioquímica, Facultad de Ciencias y Tecnologías Químicas, Universidad de Castilla-La Mancha, Campus Universitario, E-13071 Ciudad Real, Spain.
| | - José Albaladejo
- Departamento de Química-Física, Facultad de Ciencias y Tecnologías Químicas, Universidad de Castilla-La Mancha, Campus Universitario, E-13071 Ciudad Real, Spain
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13
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Bravo I, Alonso-Moreno C, Posadas I, Albaladejo J, Carrillo-Hermosilla F, Ceña V, Garzón A, López-Solera I, Romero-Castillo L. Phenyl-guanidine derivatives as potential therapeutic agents for glioblastoma multiforme: catalytic syntheses, cytotoxic effects and DNA affinity. RSC Adv 2016. [DOI: 10.1039/c5ra17920c] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Glioblastoma is a highly malignant form of brain tumor. In the work described here, several substituted phenyl-guanidine derivatives were developed for application in glioblastoma treatment.
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Affiliation(s)
- I. Bravo
- Departamento de Química-Física
- Universidad de Castilla-La Mancha
- Facultad de Farmacia
- Campus Universitario de Albacete
- 02071-Albacete
| | - C. Alonso-Moreno
- Departamento de Química Inorgánica
- Orgánica y Bioquímica
- Universidad de Castilla-La Mancha
- Facultad de Farmacia
- Campus Universitario de Albacete
| | - I. Posadas
- Unidad Asociada Neurodeath CSIC-UCLM
- Departamento de Ciencias Médicas
- Facultad de Farmacia
- Universidad de Castilla-La Mancha
- Campus Universitario de Albacete
| | - J. Albaladejo
- Departamento de Química-Física
- Universidad de Castilla-La Mancha
- Facultad de Ciencias y Tecnologías Químicas
- Campus Universitario de Ciudad Real
- 13071-Ciudad Real
| | - F. Carrillo-Hermosilla
- Departamento de Química Inorgánica
- Orgánica y Bioquímica
- Universidad de Castilla-La Mancha
- Facultad de Ciencias y Tecnologías Químicas
- Campus Universitario de Ciudad Real
| | - V. Ceña
- Unidad Asociada Neurodeath CSIC-UCLM
- Departamento de Ciencias Médicas
- Facultad de Medicina
- Universidad de Castilla-La Mancha
- Campus Universitario de Albacete
| | - A. Garzón
- Departamento de Química-Física
- Universidad de Castilla-La Mancha
- Facultad de Farmacia
- Campus Universitario de Albacete
- 02071-Albacete
| | - I. López-Solera
- Departamento de Química Inorgánica
- Orgánica y Bioquímica
- Universidad de Castilla-La Mancha
- Facultad de Ciencias y Tecnologías Químicas
- Campus Universitario de Ciudad Real
| | - L. Romero-Castillo
- Unidad Asociada Neurodeath CSIC-UCLM
- Departamento de Ciencias Médicas
- Facultad de Farmacia
- Universidad de Castilla-La Mancha
- Campus Universitario de Albacete
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14
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Antiñolo A, Carrillo-Hermosilla F, Fernández-Galán R, Montero-Rama MP, Ramos A, Villaseñor E, Rojas RS, Rodríguez-Diéguez A. Dialkylboron guanidinates: syntheses, structures and carbodiimide de-insertion reactions. Dalton Trans 2016; 45:15350-15363. [DOI: 10.1039/c6dt02913b] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Solutions of some of the title compounds reached an equilibrium with the aminoboranes and the corresponding carbodiimides at room temperature.
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Affiliation(s)
- Antonio Antiñolo
- Centro de Innovación en Química Avanzada (ORFEO-CINQA)
- Departamento de Química Inorgánica
- Orgánica y Bioquímica
- Facultad de Ciencias y Tecnologías Químicas
- Universidad de Castilla-La Mancha
| | - Fernando Carrillo-Hermosilla
- Centro de Innovación en Química Avanzada (ORFEO-CINQA)
- Departamento de Química Inorgánica
- Orgánica y Bioquímica
- Facultad de Ciencias y Tecnologías Químicas
- Universidad de Castilla-La Mancha
| | - Rafael Fernández-Galán
- Centro de Innovación en Química Avanzada (ORFEO-CINQA)
- Departamento de Química Inorgánica
- Orgánica y Bioquímica
- Facultad de Ciencias y Tecnologías Químicas
- Universidad de Castilla-La Mancha
| | - María Pilar Montero-Rama
- Centro de Innovación en Química Avanzada (ORFEO-CINQA)
- Departamento de Química Inorgánica
- Orgánica y Bioquímica
- Facultad de Ciencias y Tecnologías Químicas
- Universidad de Castilla-La Mancha
| | - Alberto Ramos
- Centro de Innovación en Química Avanzada (ORFEO-CINQA)
- Departamento de Química Inorgánica
- Orgánica y Bioquímica
- Instituto Regional de Investigación Científica Aplicada
- Universidad de Castilla-La Mancha
| | - Elena Villaseñor
- Centro de Innovación en Química Avanzada (ORFEO-CINQA)
- Departamento de Química Inorgánica
- Orgánica y Bioquímica
- Facultad de Ciencias y Tecnologías Químicas
- Universidad de Castilla-La Mancha
| | - Rene S. Rojas
- Pontificia Universidad Católica de Chile
- Facultad de Química
- Santiago de Chile
- Chile
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15
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Nieto D, Bruña S, González-Vadillo AM, Perles J, Carrillo-Hermosilla F, Antiñolo A, Padrón JM, Plata GB, Cuadrado I. Catalytically Generated Ferrocene-Containing Guanidines as Efficient Precursors for New Redox-Active Heterometallic Platinum(II) Complexes with Anticancer Activity. Organometallics 2015. [DOI: 10.1021/acs.organomet.5b00751] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Daniel Nieto
- Departamento
de Quı́mica Inorgánica, Facultad de Ciencias, Universidad Autónoma de Madrid, Cantoblanco, 28049 Madrid, Spain
| | - Sonia Bruña
- Departamento
de Quı́mica Inorgánica, Facultad de Ciencias, Universidad Autónoma de Madrid, Cantoblanco, 28049 Madrid, Spain
| | - Ana M González-Vadillo
- Departamento
de Quı́mica Inorgánica, Facultad de Ciencias, Universidad Autónoma de Madrid, Cantoblanco, 28049 Madrid, Spain
| | - Josefina Perles
- Servicio
Interdepartamental de Investigación (SIdI), Laboratorio de
Difracción de Rayos X de Monocrystal, Universidad Autónoma de Madrid, Cantoblanco, 28049 Madrid, Spain
| | - Fernando Carrillo-Hermosilla
- Centro
de Innovación en Quı́mica Avanzada (ORFEO-CINQA),
Departamento de Quı́mica Inorgánica, Orgánica
y Bioquı́mica, Facultad de Ciencias y Tecnologı́as
Quı́micas, Universidad de Castilla La Mancha, 13071 Ciudad Real, Spain
| | - Antonio Antiñolo
- Centro
de Innovación en Quı́mica Avanzada (ORFEO-CINQA),
Departamento de Quı́mica Inorgánica, Orgánica
y Bioquı́mica, Facultad de Ciencias y Tecnologı́as
Quı́micas, Universidad de Castilla La Mancha, 13071 Ciudad Real, Spain
| | - José M. Padrón
- BioLab,
Instituto Universitario de Bio-Orgánica Antonio González
(IUBO-AG), Centro de Investigaciones Biomédicas de Canarias
(CIBICAN), Universidad de La Laguna, 38206 La Laguna, Spain
| | - Gabriela B. Plata
- BioLab,
Instituto Universitario de Bio-Orgánica Antonio González
(IUBO-AG), Centro de Investigaciones Biomédicas de Canarias
(CIBICAN), Universidad de La Laguna, 38206 La Laguna, Spain
| | - Isabel Cuadrado
- Departamento
de Quı́mica Inorgánica, Facultad de Ciencias, Universidad Autónoma de Madrid, Cantoblanco, 28049 Madrid, Spain
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16
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Menéndez-Rodrı́guez L, Tomás-Mendivil E, Francos J, Crochet P, Cadierno V, Antiñolo A, Fernández-Galán R, Carrillo-Hermosilla F. Reactivity of the Dimer [{RuCl(μ-Cl)(η3:η3-C10H16)}2] (C10H16 = 2,7-Dimethylocta-2,6-diene-1,8-diyl) toward Guanidines: Access to Ruthenium(IV) and Ruthenium(II) Guanidinate Complexes. Organometallics 2015. [DOI: 10.1021/acs.organomet.5b00070] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Lucı́a Menéndez-Rodrı́guez
- Laboratorio
de Compuestos Organometálicos y Catálisis (Unidad Asociada
al CSIC), Centro de Innovación en Quı́mica Avanzada
(ORFEO-CINQA), Departamento de Quı́mica Orgánica
e Inorgánica, Instituto Universitario de Quı́mica
Organometálica “Enrique Moles”, Facultad de Quı́mica, Universidad de Oviedo, Julián Claverı́a 8, E-33006 Oviedo, Spain
| | - Eder Tomás-Mendivil
- Laboratorio
de Compuestos Organometálicos y Catálisis (Unidad Asociada
al CSIC), Centro de Innovación en Quı́mica Avanzada
(ORFEO-CINQA), Departamento de Quı́mica Orgánica
e Inorgánica, Instituto Universitario de Quı́mica
Organometálica “Enrique Moles”, Facultad de Quı́mica, Universidad de Oviedo, Julián Claverı́a 8, E-33006 Oviedo, Spain
| | - Javier Francos
- Department
of Pure and Applied Chemistry, WestCHEM, University of Strathclyde, 295 Cathedral Street, Glasgow G1 1XL, U.K
| | - Pascale Crochet
- Laboratorio
de Compuestos Organometálicos y Catálisis (Unidad Asociada
al CSIC), Centro de Innovación en Quı́mica Avanzada
(ORFEO-CINQA), Departamento de Quı́mica Orgánica
e Inorgánica, Instituto Universitario de Quı́mica
Organometálica “Enrique Moles”, Facultad de Quı́mica, Universidad de Oviedo, Julián Claverı́a 8, E-33006 Oviedo, Spain
| | - Victorio Cadierno
- Laboratorio
de Compuestos Organometálicos y Catálisis (Unidad Asociada
al CSIC), Centro de Innovación en Quı́mica Avanzada
(ORFEO-CINQA), Departamento de Quı́mica Orgánica
e Inorgánica, Instituto Universitario de Quı́mica
Organometálica “Enrique Moles”, Facultad de Quı́mica, Universidad de Oviedo, Julián Claverı́a 8, E-33006 Oviedo, Spain
| | - Antonio Antiñolo
- Centro
de Innovación en Quı́mica Avanzada (ORFEO-CINQA),
Departamento de Quı́mica Inorgánica, Orgánica
y Bioquı́mica, Facultad de Ciencias y Tecnologı́as
Quı́micas-Campus de Ciudad Real, Universidad de Castilla-La Mancha, Campus
Universitario, E-13071 Ciudad Real, Spain
| | - Rafael Fernández-Galán
- Centro
de Innovación en Quı́mica Avanzada (ORFEO-CINQA),
Departamento de Quı́mica Inorgánica, Orgánica
y Bioquı́mica, Facultad de Ciencias y Tecnologı́as
Quı́micas-Campus de Ciudad Real, Universidad de Castilla-La Mancha, Campus
Universitario, E-13071 Ciudad Real, Spain
| | - Fernando Carrillo-Hermosilla
- Centro
de Innovación en Quı́mica Avanzada (ORFEO-CINQA),
Departamento de Quı́mica Inorgánica, Orgánica
y Bioquı́mica, Facultad de Ciencias y Tecnologı́as
Quı́micas-Campus de Ciudad Real, Universidad de Castilla-La Mancha, Campus
Universitario, E-13071 Ciudad Real, Spain
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17
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Sietzen M, Wadepohl H, Ballmann J. Synthesis and reactivity of cyclometalated triamidophosphine complexes of niobium and tantalum. Inorg Chem 2015; 54:4094-103. [PMID: 25856693 DOI: 10.1021/acs.inorgchem.5b00333] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The triamidophosphine protioligand 1 reacts with the homoleptic pentakis(dimethylamido) precursors of niobium and tantalum [M(NMe2)5, where M = Nb, Ta] to form cyclometalated complexes of the type [N2PCN-κ(5)-N,N,P,C,N]M(NMe2) (2-M). Apart from the three amido donors, one benzylic position of the ligand backbone is deprotonated over the course of this reaction, resulting in the formation of a new M-C bond. As a consequence, a metallaziridine substructure is formed, and the triamidophosphine moiety thus serves as a tetraanionic pentadentate ligand. The dimethylamido complexes 2-M can be converted into the corresponding triflates [N2PCN-κ(5)-N,N,P,C,N]M(OTf) (3-M) and alkyl complexes [N2PCN-κ(5)-N,N,P,C,N]M(CH2SiMe3) (4-M) by treatment with triethylsilyl triflate (Et3SiO3SCF3) followed by (trimethylsilyl)methyllithium (LiCH2SiMe3). The alkyl complexes exhibit interesting reactivities, including a second cyclometalative backbone activation affording the trimethylphosphine-stabilized complexes [NP(CN)2-κ(6)-N,P,C,N,C,N]M(PMe3) (5-M). In the case of tantalum, the formation of a dinuclear hydrido complex (6) is observed upon hydrogenation of 4-Ta. In the case of niobium, the metallaziridine substructure in 4-Nb is prone to ring opening via protonation with triphenylsilylamine (Ph3SiNH2), resulting in formation of the corresponding imido complex [PN3-κ(4)-P,N,N,N]Nb=NSiPh3 (7).
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Affiliation(s)
- Malte Sietzen
- Anorganisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 276, 69120 Heidelberg, Germany
| | - Hubert Wadepohl
- Anorganisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 276, 69120 Heidelberg, Germany
| | - Joachim Ballmann
- Anorganisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 276, 69120 Heidelberg, Germany
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18
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Cheng H, Xiao Y, Lu C, Zhao B, Wang Y, Yao Y. Synthesis and characterization of bis(amidate) rare-earth metal amides and their application in catalytic addition of amines to carbodiimides. NEW J CHEM 2015. [DOI: 10.1039/c5nj00506j] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Five bis(amidate) rare-earth metal amides were successfully employed in guanidination, and the Nd-based catalyst showed the highest reactivity.
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Affiliation(s)
- Hao Cheng
- Key Laboratory of Organic Synthesis of Jiangsu Province
- College of Chemistry
- Chemical Engineering and Materials Science
- Dushu Lake Campus
- Soochow University
| | - Yang Xiao
- Key Laboratory of Organic Synthesis of Jiangsu Province
- College of Chemistry
- Chemical Engineering and Materials Science
- Dushu Lake Campus
- Soochow University
| | - Chengrong Lu
- Key Laboratory of Organic Synthesis of Jiangsu Province
- College of Chemistry
- Chemical Engineering and Materials Science
- Dushu Lake Campus
- Soochow University
| | - Bei Zhao
- Key Laboratory of Organic Synthesis of Jiangsu Province
- College of Chemistry
- Chemical Engineering and Materials Science
- Dushu Lake Campus
- Soochow University
| | - Yaorong Wang
- Key Laboratory of Organic Synthesis of Jiangsu Province
- College of Chemistry
- Chemical Engineering and Materials Science
- Dushu Lake Campus
- Soochow University
| | - Yingming Yao
- Key Laboratory of Organic Synthesis of Jiangsu Province
- College of Chemistry
- Chemical Engineering and Materials Science
- Dushu Lake Campus
- Soochow University
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19
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Elorriaga D, Carrillo-Hermosilla F, Antiñolo A, López-Solera I, Fernández-Galán R, Villaseñor E. Mixed amido-/imido-/guanidinato niobium complexes: synthesis and the effect of ligands on insertion reactions. Dalton Trans 2014; 43:17434-44. [DOI: 10.1039/c4dt01975j] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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20
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Alonso-Moreno C, Antiñolo A, Carrillo-Hermosilla F, Otero A. Guanidines: from classical approaches to efficient catalytic syntheses. Chem Soc Rev 2014; 43:3406-25. [DOI: 10.1039/c4cs00013g] [Citation(s) in RCA: 152] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
This review focuses on the metal-mediated catalytic addition of amines to carbodiimides as an atom-economical alternative to the classical synthesis of guanidines.
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Affiliation(s)
- Carlos Alonso-Moreno
- Departamento de Química Inorgánica
- Orgánica y Bioquímica
- Facultad de Farmacia
- Universidad de Castilla-La Mancha
- 02071-Albacete, Spain
| | - Antonio Antiñolo
- Departamento de Química Inorgánica
- Orgánica y Bioquímica
- Facultad de Ciencias y Tecnologías Químicas
- Universidad de Castilla-La Mancha
- 13071-Ciudad Real, Spain
| | - Fernando Carrillo-Hermosilla
- Departamento de Química Inorgánica
- Orgánica y Bioquímica
- Facultad de Ciencias y Tecnologías Químicas
- Universidad de Castilla-La Mancha
- 13071-Ciudad Real, Spain
| | - Antonio Otero
- Departamento de Química Inorgánica
- Orgánica y Bioquímica
- Facultad de Ciencias y Tecnologías Químicas
- Universidad de Castilla-La Mancha
- 13071-Ciudad Real, Spain
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