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Bavisotto R, Hopper N, Boscoboinik A, Owen Q, Tysoe WT. Infrared spectroscopic measurements of the structure of organic thin films; furfural on Pd(111) and Au(111) surfaces. CrystEngComm 2021. [DOI: 10.1039/d1ce00565k] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
This work demonstrates the use of reflection–adsorption infrared spectroscopy for continually monitoring the structure of organic thin films as a function of thickness and temperature to complement diffraction methods.
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Affiliation(s)
- Robert Bavisotto
- Department of Chemistry and Biochemistry
- University of Wisconsin-Milwaukee
- Milwaukee
- USA
| | - Nicholas Hopper
- Department of Chemistry and Biochemistry
- University of Wisconsin-Milwaukee
- Milwaukee
- USA
| | - Alejandro Boscoboinik
- Department of Chemistry and Biochemistry
- University of Wisconsin-Milwaukee
- Milwaukee
- USA
| | - Quintus Owen
- Department of Chemistry and Biochemistry
- University of Wisconsin-Milwaukee
- Milwaukee
- USA
| | - Wilfred T. Tysoe
- Department of Chemistry and Biochemistry
- University of Wisconsin-Milwaukee
- Milwaukee
- USA
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2
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Balaban AT, Gheorghiu MD, Draghici C. 1H-NMR Conformational Study of 2-Acyl-3,5-dialkylfurans Using Lanthanide Shift Reagents. Isr J Chem 2013. [DOI: 10.1002/ijch.198000067] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Rhyman L, Abdallah HH, Ramasami P. Quantum mechanical study of the syn-anti isomerisation of 2-tellurophenecarboaldehyde: vive la différence. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2011; 78:258-263. [PMID: 21055998 DOI: 10.1016/j.saa.2010.10.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2010] [Revised: 08/23/2010] [Accepted: 10/01/2010] [Indexed: 05/30/2023]
Abstract
The syn- and anti-conformers of 2-tellurophenecarboaldehyde are studied in the gas phase. A transition state is also modelled for the syn-anti isomerisation. Computations are done using different methods namely HF, DFT/B3LYP, MP2 and CCSD(T). The basis set used for all atoms is 6-311++G(d,p) except that LanL2DZ ECP is used for tellurium atom only. The optimised molecular structures and related structural parameters of these conformers are reported. The energy differences between the syn- and anti-conformers, associated rotational barriers and thermodynamic parameters are derived from the computations. The infrared frequencies of these conformers are also reported with appropriate assignments. This study is extended to include solvent effect and the conformers are fully optimised (DFT/B3LYP) using the integral equation formalism in the Polarisable Continuum model. In the gas phase, the theoretical rate constant for the unimolecular conversion, anti conformer to transition state, is reported for the first time; DFT/B3LYP (4.82×10(30) s(-1)) and MP2 (7.81×10(30) s(-1)). It is found that the structures are not much affected by the solvents but energy difference increases and rotational barrier decreases. The results indicate that there is a close agreement with the predictions from the different theoretical methods. The results obtained are critically analysed and compared with the furan, thiophene and selenophene analogues. A major factor affecting conformational preference and the mole fraction is the charge on the chalcogen heteroatom in the ring. An interesting outcome of this work is that in both the gas phase and solutions, the syn conformer is more stable and exists almost exclusively.
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Affiliation(s)
- L Rhyman
- Department of Chemistry, University of Mauritius, Réduit, Mauritius
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Kuş N, Reva I, Fausto R. Photoisomerization and Photochemistry of Matrix-Isolated 3-Furaldehyde. J Phys Chem A 2010; 114:12427-36. [DOI: 10.1021/jp1079839] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Nihal Kuş
- Department of Physics, Anadolu University, 26470 Eskişehir, Turkey, and Department of Chemistry, University of Coimbra, 3004-535 Coimbra, Portugal
| | - Igor Reva
- Department of Physics, Anadolu University, 26470 Eskişehir, Turkey, and Department of Chemistry, University of Coimbra, 3004-535 Coimbra, Portugal
| | - Rui Fausto
- Department of Physics, Anadolu University, 26470 Eskişehir, Turkey, and Department of Chemistry, University of Coimbra, 3004-535 Coimbra, Portugal
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Fabian J, Mehlhorn A, Pérez C. CNDO/2-Berechnungen zur Konformationsisomerie des Furfurols. ACTA ACUST UNITED AC 2010. [DOI: 10.1002/zfch.19730130325] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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7
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Peverati R, Baldridge KK. Implementation and Optimization of DFT-D/COSab with Respect to Basis Set and Functional: Application to Polar Processes of Furfural Derivatives in Solution. J Chem Theory Comput 2009; 5:2772-86. [DOI: 10.1021/ct900363n] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Roberto Peverati
- University of Zürich, Winterthurerstrasse 190, CH-8057 Zürich, Switzerland
| | - Kim K. Baldridge
- University of Zürich, Winterthurerstrasse 190, CH-8057 Zürich, Switzerland
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8
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Theoretical study of 2-selenophenecarboaldehyde in the gas and solution phases: Rotational barrier, energy difference and thermodynamic parameters. ACTA ACUST UNITED AC 2009. [DOI: 10.1016/j.theochem.2009.04.023] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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9
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Ashish H, Ramasami P. Rotational barrier and thermodynamical parameters of furfural, thiofurfural, and selenofurfural in the gas and solution phases: theoretical study based on density functional theory method. Mol Phys 2008. [DOI: 10.1080/00268970701881196] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Katritzky AR, Akhmedov NG, Doskocz J, Mohapatra PP, Hall CD, Güven A. NMR spectra, GIAO and charge density calculations of five-membered aromatic heterocycles. MAGNETIC RESONANCE IN CHEMISTRY : MRC 2007; 45:532-43. [PMID: 17534885 DOI: 10.1002/mrc.1967] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
The B3LYP/6-31+G(d) molecular geometry optimized structures of 17 five-membered heterocycles were employed together with the gauge including atomic orbitals (GIAO) density functional theory (DFT) method at the B3LYP/6-31+G(d,p), B3LYP/6-311++G(d,p) and B3LYP/6-311+G(2d,p) levels of theory for the calculation of proton and carbon chemicals shifts and coupling constants. The method of geometry optimization for pyrrole (1), N-methylpyrrole (2) and thiophene (7) using the larger 6-311++G(d,p) basis sets at the B3LYP/6-31+G(d,p), B3LYP/6-311++G(d,p), B3LYP/6-31+G(2d,p) and B3LYP/cc-pVTZ levels of theory gave little difference between calculated and experimental values of coupling constants. In general, the (1)H and 13C chemical shifts for all compounds are in good agreement with theoretical calculations using the smaller 6-31 basis set. The values of nJHH(n=3, 4, 5) and rmnJ(CH)(n=1, 2, 3, 4) were predicted well using the larger 6-31+G(d,p) and 6-311++G(d,p) basis sets and at the B3LYP/6-31+G(d,p), B3LYP/6-311++G(d,p), B3LYP/6-31+G(2d,2p) levels of theory. The computed atomic charges [Mülliken; Natural Bond Orbital Analysis (NBO); Merz-Kollman (MK); CHELP and CHELPG] for the B3LYP/6-311++G(d,p) geometry optimized structures of 1-17 were used to explore correlations with the experimental proton and carbon chemical shifts.
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Affiliation(s)
- Alan R Katritzky
- Center for Heterocyclic Compounds, Department of Chemistry, University of Florida, Gainesville, FL 32611-7200, USA.
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Rivelino R, Coutinho K, Canuto S. A Monte Carlo-Quantum Mechanics Study of the Solvent-Induced Spectral Shift and the Specific Role of Hydrogen Bonds in the Conformational Equilibrium of Furfural in Water. J Phys Chem B 2002. [DOI: 10.1021/jp026318q] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Roberto Rivelino
- Instituto de Física, Universidade de São Paulo, CP 66318, 05315-970 São Paulo, SP, Brazil
| | - Kaline Coutinho
- CIIB, Universidade de Mogi das Cruzes, CP 411, 08701-970 Mogi das Cruzes, SP, Brazil
| | - Sylvio Canuto
- Instituto de Física, Universidade de São Paulo, CP 66318, 05315-970 São Paulo, SP, Brazil
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12
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Baldridge KK, Jonas V, Bain AD. Ground state gas and solution phase conformational dynamics of polar processes: Furfural systems. J Chem Phys 2000. [DOI: 10.1063/1.1313790] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Ortiz P, Evleth E, Montero L. Ab initio SCF GIAO/NMR study of 1H and 13C NMR spectra of furan-2-carboxaldehyde isomers. ACTA ACUST UNITED AC 1998. [DOI: 10.1016/s0166-1280(98)00041-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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16
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Kaminski GA, Jorgensen WL. A Quantum Mechanical and Molecular Mechanical Method Based on CM1A Charges: Applications to Solvent Effects on Organic Equilibria and Reactions. J Phys Chem B 1998. [DOI: 10.1021/jp980314x] [Citation(s) in RCA: 104] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- George A. Kaminski
- Contribution from the Department of Chemistry, Yale University, New Haven, Connecticut 06520-8107
| | - William L. Jorgensen
- Contribution from the Department of Chemistry, Yale University, New Haven, Connecticut 06520-8107
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17
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Bain AD, Hazendonk P. Solvent Effects on Internal Rotational Barriers in Furfural. NMR Measurements and ab-Initio Molecular Orbital Methods Using Continuum Models. J Phys Chem A 1997. [DOI: 10.1021/jp971520s] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Alex D. Bain
- Department of Chemistry, McMaster University, Hamilton, Ontario, Canada L8S 4M1
| | - Paul Hazendonk
- Department of Chemistry, McMaster University, Hamilton, Ontario, Canada L8S 4M1
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18
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Bain AD, Duns G. Chapter 12 Chemical exchange measurements in NMR. METHODS FOR STRUCTURE ELUCIDATION BY HIGH-RESOLUTION NMR APPLICATIONS TO ORGANIC MOLECULES OF MODERATE MOLECULAR WEIGHT 1997. [DOI: 10.1016/s0926-4345(97)80014-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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19
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Ab Initio studies on the rotational equilibria of 2-substituted furan and thiophene carbonyl derivatives. Theor Chem Acc 1996. [DOI: 10.1007/bf01113417] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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20
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Foresman JB, Keith TA, Wiberg KB, Snoonian J, Frisch MJ. Solvent Effects. 5. Influence of Cavity Shape, Truncation of Electrostatics, and Electron Correlation on ab Initio Reaction Field Calculations. ACTA ACUST UNITED AC 1996. [DOI: 10.1021/jp960488j] [Citation(s) in RCA: 1119] [Impact Index Per Article: 40.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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21
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Conformational studies by dynamic NMR. 42. Detection of meso and racemic conformers resulting from a chirality created by the restricted torsion of hindered carbonyls. ACTA ACUST UNITED AC 1991. [DOI: 10.1007/bf01160657] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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22
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Junek H, Dworczak R, Sterk H, Fabian W. Synthesen mit Nitrilen, LXXXIV Farbe und Stereochemie von 3-(Cyanmethylen)-2-indolonen. ACTA ACUST UNITED AC 1989. [DOI: 10.1002/jlac.198919890269] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Static and Dynamic Stereochemistry of Alkyl and Analogous Groups. ADVANCES IN PHYSICAL ORGANIC CHEMISTRY 1989. [DOI: 10.1016/s0065-3160(08)60018-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register]
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Kozaki T, Morihashi K, Kikuchi O. An MNDO-effective charge model study of the solvent effect: The internal rotation about partial double bonds and the nitrogen inversion in amine. ACTA ACUST UNITED AC 1988. [DOI: 10.1016/0166-1280(88)80360-9] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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26
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Fabian WMF. AM1 calculations of rotation around essential single bonds and preferred conformations in conjugated molecules. J Comput Chem 1988. [DOI: 10.1002/jcc.540090412] [Citation(s) in RCA: 86] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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27
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The Conformations of Acyl Groups in Heterocyclic Compounds. ADVANCES IN HETEROCYCLIC CHEMISTRY 1987. [DOI: 10.1016/s0065-2725(08)60161-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register]
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28
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Rotational isomers of the radical-anions of 2-carbonyl-containing derivatives of 5-nitrofuran. Chem Heterocycl Compd (N Y) 1987. [DOI: 10.1007/bf00475464] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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29
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Braathen G, Kveseth K, Nielsen C, Hagen K. Molecular structure and conformational equilibrium of gaseous thiophene-2-aldehyde as studied by electron diffraction and microwave, infrared, raman and matrix isolation spectroscopy. J Mol Struct 1986. [DOI: 10.1016/0022-2860(86)87028-4] [Citation(s) in RCA: 26] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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30
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Hagen K. Electron diffraction study of the molecular structure and conformation of gaseous 2-furoyl chloride. J Mol Struct 1985. [DOI: 10.1016/0022-2860(85)87007-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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31
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Mirarchi D, Ritchie G. Solution-state conformations of 2-pivaloylfuran, 2-pivaloylthiophen and 2-pivaloylpyrrole: a dipole moment and kerr effect study. J Mol Struct 1984. [DOI: 10.1016/0022-2860(84)87048-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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32
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Contributions to the study of rotational isomerism in derivatives of furan, thiophene, and pyrrole bearing carbonyl-containing substituents (review). Chem Heterocycl Compd (N Y) 1984. [DOI: 10.1007/bf00514296] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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33
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Quantum-chemical study of the effect of solvation on the cis,trans-isomerization of furfural and its carbonyl-oxygen protonated forms. Russ Chem Bull 1984. [DOI: 10.1007/bf00951064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Lumbroso H, Liégeois C, Pappalardo G, Andrieu C. A dipole moment study of 2-benzoylpyrroles, di-(2-pyrryl)ketones and their sulphur analogues. J Mol Struct 1984. [DOI: 10.1016/0022-2860(84)80246-x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Recent Advances in Furan Chemistry. Part II. ADVANCES IN HETEROCYCLIC CHEMISTRY 1982. [DOI: 10.1016/s0065-2725(08)60400-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register]
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Capdevila J, Canadell E. A qualitative molecular orbital picture of 2-substituted carbonyl derivatives of furan and pyrrole. J Heterocycl Chem 1981. [DOI: 10.1002/jhet.5570180540] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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39
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Millefiori S, Millefiori A. Electronic structure and molecular conformation of furan and pyrrole azomethines. An ab initiomolecular orbital study. J Heterocycl Chem 1981. [DOI: 10.1002/jhet.5570180413] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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40
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Lumbroso H, Curé J, Butler RN. A dipole moment study of annular tautomerism in 5-p-tolyltetrazole. J Heterocycl Chem 1980. [DOI: 10.1002/jhet.5570170704] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Lumbroso H, Liégeois G, Pappalardo G, Librando V. An experimental and ab inttio molecular orbital study of benzaldehyde and isomeric phthalaldehydes. J Mol Struct 1980. [DOI: 10.1016/0022-2860(80)85236-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Conformations of carbonyl derivatives of isoxazole in solution. Chem Heterocycl Compd (N Y) 1979. [DOI: 10.1007/bf00473836] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Schultz G, Fellegvári I, Kolonits M, Kiss ÁI, Bélapete, Bánki J. Electron diffraction and infrared spectroscopic study of the molecular structure of furan-2-aldehyde and 2-furanmethanethiol. J Mol Struct 1978. [DOI: 10.1016/0022-2860(78)80092-1] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Lumbroso H, Curé J, Andreu C. The preferred conformations of 2,4-dichlorophenol, 2,4-dichloroanisole and their sulphur analogues. J Mol Struct 1978. [DOI: 10.1016/0022-2860(78)85031-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Lumbroso H, Liégeois C, Morris D, Stephen J. A dipole moment study of n-trimethyl-ammoniobenzamidates and n-benzoyliminodimethylsulphur(iv). Tetrahedron 1978. [DOI: 10.1016/0040-4020(78)80052-0] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Lumbroso H, Bertin D, Pappalardo G. An experimental and theoretical dipole-moment study of the conformations of formylpyridines and diformylpyridines. J Mol Struct 1977. [DOI: 10.1016/0022-2860(77)87012-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Electronic structures, physical properties, and reactivities of five-membered aromatic heterocycles (review). Chem Heterocycl Compd (N Y) 1977. [DOI: 10.1007/bf00479859] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Garbay-Jaureguiberry C, Roques B. Difference de conjugaison dans les enchainements C=C-C=O cisoide et transoide : Mise en evidence experimentale par RMN 13C a basse temperature sur des β-formyl et -acetyl pyrroles. Tetrahedron Lett 1976. [DOI: 10.1016/s0040-4039(00)78041-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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