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Journal articles on the topic 'Oxazole chemistry'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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1

Šagud, Ivana, Simona Božić, Željko Marinić, and Marija Šindler-Kulyk. "Photochemical approach to functionalized benzobicyclo[3.2.1]octene structures via fused oxazoline derivatives from 4- and 5-(o-vinylstyryl)oxazoles." Beilstein Journal of Organic Chemistry 10 (September 18, 2014): 2222–29. http://dx.doi.org/10.3762/bjoc.10.230.

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Novel cis/trans-4- and cis/trans-5-(2-vinylstyryl)oxazoles have been synthesized by Wittig reactions from the diphosphonium salt of α,α’-o-xylene dibromide, formaldehyde and 4- and 5-oxazolecarbaldehydes, respectively. In contrast, trans-5-(2-vinylstyryl)oxazole has been synthesized by the van Leusen reaction from trans-3-(2-vinylphenyl)acrylaldehyde which is prepared from o-vinylbenzaldehyde and (formylmethylene)triphenylphosphorane. The 4- and 5-(2-vinylstyryl)oxazoles afford, by photochemical intramolecular cycloaddition, diverse fused oxazoline-benzobicyclo[3.2.1]octadienes, which are iden

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2

Ochędzan-Siodłak, Wioletta, Dawid Siodłak, Karolina Banaś, Katarzyna Halikowska, Sławomir Wierzba, and Karel Doležal. "Naturally Occurring Oxazole Structural Units as Ligands of Vanadium Catalysts for Ethylene-Norbornene (Co)polymerization." Catalysts 11, no. 8 (2021): 923. http://dx.doi.org/10.3390/catal11080923.

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1,3-Oxazole and 4,5-dihydro-1,3-oxazole are common structural motifs in naturally occurring peptides. A series of vanadium complexes were synthesized using VCl3(THF)3 and methyl substituted (4,5-dihydro-1,3-oxazol-2-yl)-1,3-oxazoles as ligands and analyzed using NMR and MS methods. The complexes were found to be active catalysts both in ethylene polymerization and ethylene-norbornene copolymerization. The position of methyl substituent in the ligand has considerable impact on the performance of (co)polymerization reaction, as well as on the microstructure, and thus physical properties of the o

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3

He, Yuan, Ting Zheng, Yin-Hui Huang, and Lin Dong. "Rh(iii)-Catalyzed olefination to build diverse oxazole derivatives from functional alkynes." Organic & Biomolecular Chemistry 19, no. 22 (2021): 4937–42. http://dx.doi.org/10.1039/d1ob00507c.

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4

Zanakhov, Timur O., Ekaterina E. Galenko, Mariya A. Kryukova, Mikhail S. Novikov, and Alexander A. Khlebnikov. "Isomerization of 5-(2H-Azirin-2-yl)oxazoles: An Atom-Economic Approach to 4H-Pyrrolo[2,3-d]oxazoles." Molecules 26, no. 7 (2021): 1881. http://dx.doi.org/10.3390/molecules26071881.

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An atom economical method for the preparation of variously substituted 4H-pyrrolo[2,3-d]oxazoles was developed on the basis of thermal isomerization of 5-(2H-azirin-2-yl)oxazoles. The latter were prepared by Rh2(oct)4 catalyzed reaction of 2-(3-aryl/heteroaryl)-2-diazoacetyl-2H-azirines with a set of substituted acetonitriles, benzonitriles, acrylonitrile and fumaronitrile. According to DFT calculations the transformation of 5-(2H-azirin-2-yl)oxazole to 4H-pyrrolo[2,3-d]oxazole occurs through the nitrenoid-like transition state to give a 3aH-pyrrolo[2,3-d]oxazole intermediate, followed by 1,5-

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5

Belaidi, Salah, and Malika Mellaoui. "Electronic Structure and Physical-Chemistry Property Relationship for Oxazole Derivatives by Ab Initio and DFT Methods." Organic Chemistry International 2011 (September 12, 2011): 1–7. http://dx.doi.org/10.1155/2011/254064.

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The geometric, electronic structure, effect of the substitution, and structure physical-chemistry relationship for oxazoles derivatives have been studied by ab initio and DFT theory. In the present work, the calculated values, namely, net charges, bond lengths, dipole moments, electron affinities, heats of formation, and QSAR properties are reported and discussed in terms of the reactivity of oxazole derivatives.

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6

Apostol, Theodora-Venera, Mariana Carmen Chifiriuc, Constantin Draghici, et al. "Synthesis, In Silico and In Vitro Evaluation of Antimicrobial and Toxicity Features of New 4-[(4-Chlorophenyl)sulfonyl]benzoic Acid Derivatives." Molecules 26, no. 16 (2021): 5107. http://dx.doi.org/10.3390/molecules26165107.

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The multi-step synthesis, physico-chemical characterization, and biological activity of novel valine-derived compounds, i.e., N-acyl-α-amino acids, 1,3-oxazol-5(4H)-ones, N-acyl-α-amino ketones, and 1,3-oxazoles derivatives, bearing a 4-[(4-chlorophenyl)sulfonyl]phenyl moiety are reported here. The structures of the newly synthesized compounds were confirmed by spectral (UV-Vis, FT-IR, MS, 1H- and 13C-NMR) data and elemental analysis results, and their purity was determined by RP-HPLC. The new compounds were assessed for their antimicrobial activity and toxicity to aquatic crustacean Daphnia m

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7

Nesi, Rodolfo, Stefania Turchi, Donatella Giomi, and Andrea Danesi. "New perspectives in oxazole chemistry." Tetrahedron 55, no. 48 (1999): 13809–18. http://dx.doi.org/10.1016/s0040-4020(99)00864-9.

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8

Burade, Sachin S., Sushil V. Pawar, Tanmoy Saha та ін. "Sugar-derived oxazolone pseudotetrapeptide as γ-turn inducer and anion-selective transporter". Beilstein Journal of Organic Chemistry 15 (14 жовтня 2019): 2419–27. http://dx.doi.org/10.3762/bjoc.15.234.

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The intramolecular cyclization of a C-3-tetrasubstituted furanoid sugar amino acid-derived linear tetrapeptide afforded an oxazolone pseudo-peptide with the formation of an oxazole ring at the C-terminus. A conformational study of the oxazolone pseudo-peptide showed intramolecular C=O···HN(II) hydrogen bonding in a seven-membered ring leading to a γ-turn conformation. This fact was supported by a solution-state NMR and molecular modeling studies. The oxazolone pseudotetrapeptide was found to be a better Cl−-selective transporter for which an anion–anion antiport mechanism was established.

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9

Zheng, Xunan, Wei Liu, and Dawei Zhang. "Recent Advances in the Synthesis of Oxazole-Based Molecules via van Leusen Oxazole Synthesis." Molecules 25, no. 7 (2020): 1594. http://dx.doi.org/10.3390/molecules25071594.

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Oxazole compounds, including one nitrogen atom and one oxygen atom in a five-membered heterocyclic ring, are present in various biological activities. Due to binding with a widespread spectrum of receptors and enzymes easily in biological systems through various non-covalent interactions, oxazole-based molecules are becoming a kind of significant heterocyclic nucleus, which have received attention from researchers globally, leading them to synthesize diverse oxazole derivatives. The van Leusen reaction, based on tosylmethylisocyanides (TosMICs), is one of the most appropriate strategies to pre

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10

Abdel Monaim, Shimaa A. H., Jessica T. Mhlongo, Ashish Kumar, Ayman El-Faham, Fernando Albericio та Beatriz G. de la Torre. "Formation of Nα-terminal 2-dialkyl amino oxazoles from guanidinated derivatives under mild conditions". Organic & Biomolecular Chemistry 16, № 31 (2018): 5661–66. http://dx.doi.org/10.1039/c8ob01463a.

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11

Fliege, Eckhard, Helmut Dreizler, Michael Meyer, Khalid Iqbal, and John Sheridan. "14N Nuclear Quadrupole Coupling and Methyl Internal Rotation of 2-, 4-, and 5-Methyl Oxazole." Zeitschrift für Naturforschung A 41, no. 4 (1986): 623–36. http://dx.doi.org/10.1515/zna-1986-0407.

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In the following we give an outline of 14N nuclear quadrupole, internal axis method (IAM) methyl internal rotation, and fourth order centrifugal distortion - only needed for extrapolating transition frequencies to higher J values - analyses performed for 2-, 4-, and 5-methyl oxazole.The results are discussed, the three methyl oxazoles being compared with one another and with their common parent, oxazole.

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12

Nefzi, Adel, Siva Murru, and Ramesh Bista. "Synthesis of Novel Oxazolyl Amino Acids and Their Use in the Parallel Synthesis of Disubstituted Oxazole Libraries." Synthesis 50, no. 07 (2018): 1546–54. http://dx.doi.org/10.1055/s-0036-1589148.

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Novel chiral oxazolyl alanine and homologues are synthesized and utilized as building blocks for the solid-phase parallel synthesis of novel trifunctional oxazole small molecules in good to excellent overall yields and with high purity. The orthogonal deprotection strategy of oxazolyl amino acids, prepared from serine methyl ester and amino acids such as aspartic and glutamic acids, allows multiple sites of diversification to make a variety of pharmacologically relevant small molecules. The general nature of this approach allows the preparation of a large number of small molecules and peptidom

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13

Slobodyanyuk, Evgeniy Y., Oleksiy S. Artamonov, Irene B. Kulik, Eduard Rusanov, Dmitriy M. Volochnyuk, and Oleksandr O. Grygorenko. "A bio-inspired approach to proline-derived 2,4-disubstituted oxazoles." Heterocyclic Communications 24, no. 1 (2018): 11–17. http://dx.doi.org/10.1515/hc-2017-0235.

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Abstract A convenient four-step approach to the synthesis of (S)-4-alkyl-2-(pyrrolidin-2-yl)oxazoles starting from l-Boc-proline inspired by naturally occurring oxazole-containing peptidomimetics is described. The key step is the cyclization of 1-Boc-N-(1-oxoalkan-2-yl)pyrrolidine-2-carboxamides – aldehyde intermediates which demonstrate low to moderate stability – under Appel reaction conditions. This method furnishes the target compounds with more than 98% ee and in a 17–51% overall yield and has been used at up to a 45-g scale.

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14

Anderson, Oren P., Anthony GM Barrett, Jeremy J. Edmunds, et al. "Applications of crotyldiisopinocampheylboranes in synthesis: a formal total synthesis of (+)-calyculin A." Canadian Journal of Chemistry 79, no. 11 (2001): 1562–92. http://dx.doi.org/10.1139/v01-133.

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The formal total synthesis of the marine metabolite (+)-calyculin A is reported. The key steps involve (i) the use of Brown allylboration chemistry to control the relative and absolute stereochemistry of homoallylic alcohol arrays, thus setting eight of the desired stereocenters; (ii) Stille coupling methodology in the construction of the cyano tetraene unit of the natural product; and (iii) a modified CornforthMeyers approach to the synthesis of the oxazole fragment.Key words: calyculin, marine natural product, phosphatase inhibitor, total synthesis, palladium catalyzed coupling reactions, a

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15

Lamberth, Clemens. "Oxazole and Isoxazole Chemistry in Crop Protection." Journal of Heterocyclic Chemistry 55, no. 9 (2018): 2035–45. http://dx.doi.org/10.1002/jhet.3252.

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16

Zhang, Hui-Zhen, Zhi-Long Zhao, and Cheng-He Zhou. "Recent advance in oxazole-based medicinal chemistry." European Journal of Medicinal Chemistry 144 (January 2018): 444–92. http://dx.doi.org/10.1016/j.ejmech.2017.12.044.

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17

Geier, Michael J., Xiaotian Wang, Luke D. Humphreys, Selcuk Calimsiz, and Mark E. Scott. "Warming Up to Oxazole: Noncryogenic Oxazole Metalation and Negishi Coupling Development." Synlett 30, no. 15 (2019): 1776–81. http://dx.doi.org/10.1055/s-0037-1611909.

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This report details the development of several suitable noncryogenic metalation conditions for the synthesis of oxazole zincate. Subsequent rounds of high-throughput catalyst screening ultimately led to the identification of several suitable Pd sources that can be used for the Negishi coupling of unsubstituted oxazole. The scope and generality for one of the reported conditions is also presented.

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18

Mai, Nguyen Thi Ngoc, Duong Quoc Hoan, Vu Thi Anh Tuyet, Tran Thi Thu Trang, Duong Khanh Linh, and Trinh Thi Huan. "An Effective Assembling of Novel Derivatives Containing Both Benzo[d]thiazole and Benzo[d]oxazole Rings." Letters in Organic Chemistry 17, no. 11 (2020): 815–22. http://dx.doi.org/10.2174/1570178617666200207104912.

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A novel series of 5-(benzo[d]thiazol-2-yl)benzo[d]oxazole-based compounds was synthesized in four linear steps in high yield from vanillin. Both benzo[d]thiazole and benzo[d]oxazole cyclizations were assisted with a domestic microwave oven in about 4-8 minutes in which the yield of the benzo[d]oxazole cyclization was up to 92%. Structures of the new synthesized compounds were elucidated by spectral data.

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19

Decken, Andreas, Robert A. Gossage, and Paras N. Yadav. "Oxazoline chemistry. Part VIII. Synthesis and characterization of a new class of pincer ligands derived from the 2-(o-anilinyl)-2-oxazoline skeleton Applications to the synthesis of group X transition metal catalysts." Canadian Journal of Chemistry 83, no. 8 (2005): 1185–89. http://dx.doi.org/10.1139/v05-163.

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The synthesis and characterization of a new and readily synthesized class of potentially anionic pincer ligands with C1 point group symmetries is described. These materials can be made via amide coupling of a 2-(2′-anilinyl)-2-oxazoline unit with picolinic acid; the incorporation of enantiopure oxazoline fragments facilitates the construction of chiral C1 pincers. Treatment of the free ligands with Pd metal sources leads to the formation of amidoPd pincer complexes in good yield. One of these Pd complexes has been characterized by single crystal X-ray diffraction methods, which confirms the p

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20

Rachid, Leena N., та Peter W. R. Corfield. "Poly[3-methyl-1,3-oxazolidin-2-iminium[µ3-cyanido-tri-µ2-cyanido-κ9C:N-tricuprate(I)]]". Molbank 2021, № 3 (2021): M1259. http://dx.doi.org/10.3390/m1259.

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The unexpected formation of an oxazole ring has occurred during synthesis of a copper(I) cyanide network polymer as part of our ongoing studies of the structural chemistry of these networks. Crystals of the title compound were formed during the synthesis of a previously reported CuCN network solid containing protonated N-methylethanolamine and have been characterized by single crystal X-ray structure analysis. The structure shows well-defined oxazole-2-iminium cations sitting in continuous channels along the short a-axis of the crystal in a new three-dimensional copper(I) cyanide polymeric net

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21

Apostol, Theodora-Venera, Luminita Gabriela Marutescu, Constantin Draghici та ін. "Synthesis and Biological Evaluation of New N-Acyl-α-amino Ketones and 1,3-Oxazoles Derivatives". Molecules 26, № 16 (2021): 5019. http://dx.doi.org/10.3390/molecules26165019.

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In order to develop novel bioactive substances with potent activities, some new valine-derived compounds incorporating a 4-(phenylsulfonyl)phenyl fragment, namely, acyclic precursors from N-acyl-α-amino acids and N-acyl-α-amino ketones classes, and heterocycles from the large family of 1,3-oxazole-based compounds, were synthesized. The structures of the new compounds were established using elemental analysis and spectral (UV-Vis, FT-IR, MS, NMR) data, and their purity was checked by reversed-phase HPLC. The newly synthesized compounds were evaluated for their antimicrobial and antibiofilm acti

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22

Yoshimura, Akira, Akio Saito, Viktor V. Zhdankin, and Mekhman S. Yusubov. "Synthesis of Oxazoline and Oxazole Derivatives by Hypervalent-Iodine-Mediated Oxidative Cycloaddition Reactions." Synthesis 52, no. 16 (2020): 2299–310. http://dx.doi.org/10.1055/s-0040-1707122.

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Organohypervalent iodine reagents are widely used for the preparation of various oxazolines, oxazoles, isoxazolines, and isoxazoles. In the formation of these heterocyclic compounds, hypervalent iodine species can serve as the activating reagents for various substrates, as well as the heteroatom donor reagents. In recent research, both chemical and electrochemical approaches toward generation of hypervalent iodine species have been utilized. The in situ generated active species can react with appropriate substrates to give the corresponding heterocyclic products. In this short review, we summa

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23

Kenari, Marziyeh E., Joshua I. Putman, Ravi P. Singh, et al. "Enantiomeric Separation of New Chiral Azole Compounds." Molecules 26, no. 1 (2021): 213. http://dx.doi.org/10.3390/molecules26010213.

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Twelve new azole compounds were synthesized through an ene reaction involving methylidene heterocycles and phenylmaleimide, producing four oxazoles, five thiazoles, and one pyridine derivative, and ethyl glyoxylate for an oxazole and a thiazole compound. The twelve azoles have a stereogenic center in their structure. Hence, a method to separate the enantiomeric pairs, must be provided if any further study of chemical and pharmacological importance of these compounds is to be accomplished. Six chiral stationary phases were assayed: four were based on macrocyclic glycopeptide selectors and two o

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24

Abdurakhmanova, E. R., S. G. Pil’o, K. M. Kondratyuk, A. V. Golovchenko, and V. S. Brovarets. "1,3-oxazole derived cytisines." Russian Journal of General Chemistry 87, no. 2 (2017): 244–51. http://dx.doi.org/10.1134/s1070363217020153.

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25

Freedman, Jules, and Edward W. Huber. "An unusual oxazole formation." Journal of Heterocyclic Chemistry 27, no. 2 (1990): 343–46. http://dx.doi.org/10.1002/jhet.5570270243.

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26

Felsmann, Marika, Jörg Hübscher, Frank Eißmann, Wilhelm Seichter, and Edwin Weber. "New Pyridylene-bridged Bisoxazoles – Synthesis and Structural Study." Zeitschrift für Naturforschung B 66, no. 2 (2011): 197—s208. http://dx.doi.org/10.1515/znb-2011-0213.

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The bisoxazoles 1a - 1c that feature structures with two oxazole moieties connected to a 2,6- pyridylene central linker and contain different aryl substituents in 4- and 5-positions of the oxazole rings have been synthesized. Single-crystal X-ray structure determinations of the free ligand 1a, containing the NiCl2 complex of 1c as the CH3COOH solvate as well as the 1,4-dioxane-solvated diester intermediate 2a are reported, which show specific molecular conformations and packings in the crystals. The conformation of 1a is syn with reference to the oxazole nitrogen atoms and anti with reference

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27

Rostovskii, Nikolai V., Mikhail S. Novikov, Alexander F. Khlebnikov, Galina L. Starova та Margarita S. Avdontseva. "Azirinium ylides from α-diazoketones and 2H-azirines on the route to 2H-1,4-oxazines: three-membered ring opening vs 1,5-cyclization". Beilstein Journal of Organic Chemistry 11 (2 березня 2015): 302–12. http://dx.doi.org/10.3762/bjoc.11.35.

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Strained azirinium ylides derived from 2H-azirines and α-diazoketones under Rh(II)-catalysis can undergo either irreversible ring opening across the N–C2 bond to 2-azabuta-1,3-dienes that further cyclize to 2H-1,4-oxazines or reversibly undergo a 1,5-cyclization to dihydroazireno[2,1-b]oxazoles. Dihydroazireno[2,1-b]oxazoles derived from 3-aryl-2H-azirines and 3-diazoacetylacetone or ethyl diazoacetoacetate are able to cycloadd to acetyl(methyl)ketene generated from 3-diazoacetylacetone under Rh(II) catalysis to give 4,6-dioxa-1-azabicyclo[3.2.1]oct-2-ene and/or 5,7-dioxa-1-azabicyclo[4.3.1]de

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28

Apostol, Theodora Venera, Stefania Felicia Barbuceanu, Laura Ileana Socea, et al. "Synthesis, characterization and Cytotoxicity Evaluation of New Heterocyclic Compounds with Oxazole Ring Containing 4-(Phenylsulfonyl)phenyl Moiety." Revista de Chimie 70, no. 11 (2019): 3793–801. http://dx.doi.org/10.37358/rc.19.11.7649.

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The paper presents the synthesis, characterization and cytotoxicity assessment of five organic compounds containing 4-(phenylsulfonyl)phenyl fragment in the molecule, namely of three acyclic precursors derived from phenylalanine (from N-acyl-a-amino acids, N-acyl-a-amino acyl chlorides and N-acyl-a-amino ketones class) and of the cyclization products: a 1,3-oxazol-5(4H)-one and, respectively, a 1,3-oxazole substituted in position 5 with the p-tolyl group. The synthesized compounds were characterized by spectral methods (UV-Vis, FT-IR, 1H-NMR, 13C-NMR, and MS) and elemental analysis, which conf

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29

Chojnacka, Maja W., Jeanette A. Adjei, Alan J. Lough, Guerino G. Sacripante та Robert A. Gossage. "Transition metal complexes of monodentate 2-oxazolines containing long chain alkyl groups. The crystal structure of trans-PdCl2(κ1-N-rac-2-heptadecyl-4,5-dihydro-5-methyl-2-oxazole)2". Zeitschrift für Naturforschung B 75, № 4 (2020): 371–77. http://dx.doi.org/10.1515/znb-2019-0212.

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AbstractThe synthesis, characterisation and properties of several divalent metal complexes (Co, Ni, Pd) containing 2-oxazoline ligands L1–L3, appended with long chain alkyl and/or ester groups, is reported. The X-ray crystal structure aspects of one such complex, trans-PdCl2(rac-2-heptadecyl-4,5-dihydro-5-methyl-2-oxazole)2 (i.e. PdCl2(L1)2: 3), is described. This latter material contains one of the longest alkyl chains to be crystallographically characterised appended to an oxazoline ligand. The complexes reported herein represent the first transition metal derivatives of these high molecular

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30

Tapsoba, I., N. Adhoum, M. L. Ben Khoud, R. Kossai, and K. Boujlel. "A New Route of Synthesis of 3a,6a-Dihydro-oxazolo[5,4-d]oxazole Derivatives." Synthetic Communications 33, no. 10 (2003): 1675–82. http://dx.doi.org/10.1081/scc-120018929.

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31

Kang, Seokwoo, Jin-Suk Huh, Jang-Joo Kim, and Jongwook Park. "Highly efficient deep-blue fluorescence OLEDs with excellent charge balance based on phenanthro[9,10-d]oxazole-anthracene derivatives." Journal of Materials Chemistry C 8, no. 32 (2020): 11168–76. http://dx.doi.org/10.1039/d0tc01811b.

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32

Chatterjee, Kuntal, and Otto Dopfer. "Microhydration Structures of Protonated Oxazole." Journal of Physical Chemistry A 123, no. 35 (2019): 7637–50. http://dx.doi.org/10.1021/acs.jpca.9b06587.

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33

F. Molinski, Tadeusz, and Cynthia M. Shafer. "A Practical Synthesis of 1,3-Oxazole." HETEROCYCLES 53, no. 5 (2000): 1167. http://dx.doi.org/10.3987/com-99-8844.

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34

Liu, Jian, Yu Wen, Fengjun He, et al. "Ruthenium(ii)-catalyzed C–O/C–S cyclization for the synthesis of 5-membered O-containing and S-containing heterocycles." Organic Chemistry Frontiers 6, no. 6 (2019): 846–51. http://dx.doi.org/10.1039/c8qo01425f.

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35

Falorni, Massimo, Giovanna Dettori, and Giampaolo Giacomelli. "Synthesis of new oxazole-containing peptidomimetics." Tetrahedron: Asymmetry 9, no. 8 (1998): 1419–26. http://dx.doi.org/10.1016/s0957-4166(98)00109-8.

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36

Serebryannikova, Anna V., Ekaterina E. Galenko, Mikhail S. Novikov, and Alexander F. Khlebnikov. "Synthesis of Isoxazole- and Oxazole-4-carboxylic Acids Derivatives by Controlled Isoxazole-Azirine-Isoxazole/Oxazole Isomerization." Journal of Organic Chemistry 84, no. 23 (2019): 15567–77. http://dx.doi.org/10.1021/acs.joc.9b02536.

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37

El-Sharief, A. M. Sh, Y. A. Ammar, M. A. Zahran, and H. Kh Sabet. "utility of Cyanothioformamides in synthesis of Some Bis(Imidazole, Oxazole, Thiazole, Oxadiazole, Triazole, Benzoxazinethione and Quinazoline) Derivatives." Journal of Chemical Research 2003, no. 3 (2003): 162–67. http://dx.doi.org/10.3184/030823403103173354.

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Interaction of 1,4-bis(cyanothioformamido)benzene 2 with various electrophilic and nucleophilic reagents furnished the corresponding bis(imidazole, oxazole, thiazole, oxadiazole, triazole, benzoxazinethione and quinazoline) derivatives.

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38

Suzuki, Kouichi, and Kazunori Ueno. "Synthesis of Fluorescent 1,2-Oxazole Compounds." Journal of Photopolymer Science and Technology 14, no. 2 (2001): 311–12. http://dx.doi.org/10.2494/photopolymer.14.311.

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39

Marson, Charles M., and Mona Saadi. "Synthesis of the penta-oxazole core of telomestatin in a convergent approach to poly-oxazole macrocycles." Organic & Biomolecular Chemistry 4, no. 21 (2006): 3892. http://dx.doi.org/10.1039/b613791c.

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40

Ibrar, Aliya, Imtiaz Khan, Naeem Abbas, Umar Farooq, and Ajmal Khan. "Transition-metal-free synthesis of oxazoles: valuable structural fragments in drug discovery." RSC Advances 6, no. 95 (2016): 93016–47. http://dx.doi.org/10.1039/c6ra19324b.

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41

Zhou, Ping-Xin, Shuai Shi, Jia Wang, Yalei Zhang, Changzheng Li, and Chunpo Ge. "Palladium/copper-catalyzed decarbonylative heteroarylation of amides via C–N bond activation." Organic Chemistry Frontiers 6, no. 12 (2019): 1942–47. http://dx.doi.org/10.1039/c9qo00106a.

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A novel strategy for the synthesis of 2-arylated oxazole derivatives via palladium/copper-catalyzed decarbonylative heteroarylation of amides via C–N bond activation by ground-state destabilization is reported.

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42

Chen, Zhi, Tao Lin, Haohan Li, Fang Cheng, Chenliang Su, and Kian Ping Loh. "Hydrogen bond guided synthesis of close-packed one-dimensional graphdiyne on the Ag(111) surface." Chemical Science 10, no. 47 (2019): 10849–52. http://dx.doi.org/10.1039/c9sc04530a.

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Aided by hydrogen bonding, alkyne and oxazole functionalized precursors undergo uniform self-assembly, which serves as a template for the fabrication of one-dimensional graphdiyne-like wires on the Ag(111) surface.

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43

Wales, Steven M., Katherine A. Hammer, Kittiya Somphol, et al. "Synthesis and antimicrobial activity of binaphthyl-based, functionalized oxazole and thiazole peptidomimetics." Organic & Biomolecular Chemistry 13, no. 44 (2015): 10813–24. http://dx.doi.org/10.1039/c5ob01638j.

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Thirty two new binaphthyl-based, oxazole and thiazole peptidomimetics were prepared, which showed antibacterial activity (MICs 1–16 μg mL<sup>−1</sup>) against both Gram positive and negative isolates.

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44

Bendedouche, Choukri Kamel, and Hadj Benhaoua. "Copper-Exchanged Bentonite: A Reusable Catalysis for the Formation of Alkoxycarbonyl Nitrile Ylides under Microwave Irradiation." Journal of Chemical Research 36, no. 3 (2012): 149–51. http://dx.doi.org/10.3184/174751912x13298456741454.

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Ethyldiazoacetate reacts as a carbene precursor in presence of copper exchanged bentonite. Reaction with excess nitrile gave oxazole derivatives. Their formation is explained by intramolecular 1,5-cyclisation of alkoxycarbonyl substituted nitrile ylide intermediate.

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45

Hamdan, Fatima, Fatemeh Tahoori, and Saeed Balalaie. "Synthesis of novel cyclopeptides containing heterocyclic skeletons." RSC Advances 8, no. 59 (2018): 33893–926. http://dx.doi.org/10.1039/c8ra03899f.

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46

Niu, Ben, Ruixing Liu, Yin Wei, and Min Shi. "Catalyst-controlled synthesis of 4-amino-isoquinolin-1(2H)-one and oxazole derivatives." Organic Chemistry Frontiers 5, no. 9 (2018): 1466–70. http://dx.doi.org/10.1039/c8qo00125a.

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A facile synthetic method for the preparation of oxazole and 4-amino-isoquinolin-1(2H)-one derivatives has been developed from the reaction of N-(pivaloyloxy)-amides and ynamides by using different metal catalysts.

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47

Gossage, Robert A., Paras N. Yadav, Timothy D. MacInnis, J. Wilson Quail, and Andreas Decken. "Zinc halide oxazoline complexes — The quest for structural diversity." Canadian Journal of Chemistry 87, no. 1 (2009): 368–79. http://dx.doi.org/10.1139/v08-174.

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The synthesis and characterization of 14 ZnX2 (X = Cl or Br) complexes containing aryl-oxazoline (ox) ligands is reported. Eleven of these derivatives have been structurally elucidated in the solid state by single crystal X-ray diffraction methods. The ligands used are 2-(3-R-phenyl)-2-oxazoline (R = Cl or Me), 2-(4-R-phenyl)-2-oxazoline (R = Cl, F, Me or –OMe), and 2-(anisol-2-yl)-4,4-dimethyl-2-oxazoline (7a). All oxazolines, with the exception of 7a, lead to the formation of materials identified as ZnX2(ox)2 upon reaction with ZnX2. A distorted tetrahedral coordination motif around the Zn m

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48

Rodionova, O. A., G. O. Finagenova, M. V. Puzyk, and K. P. Balashev. "Cyclopalladized complexes on the matrix of phenyland naphthyl-derivatives of oxazole and oxazoline with ethylenediamine." Russian Journal of General Chemistry 80, no. 2 (2010): 370–71. http://dx.doi.org/10.1134/s1070363210020337.

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Kempson, James, and Gerald Pattenden. "A Macrolactamisation-Oxazoline Ring Forming Approach towards the tris-Oxazole Macrolide Core in the Ulapualides." Synlett 1999, no. 5 (1999): 533–36. http://dx.doi.org/10.1055/s-1999-2671.

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Pérez, Sonsoles, Enrique Guitián, and Luis Castedo. "On the reaction between oxazole and benzyne." Arkivoc 2000, no. 4 (2000): 467–70. http://dx.doi.org/10.3998/ark.5550190.0001.403.

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