Perfluoro Allyl Fluorosulfate (FAFS): A Versatile Building Block for New Fluoroallylic Compounds by Giuseppe Marchionni, Ivan Wlassics, Vito Tortelli, Serena Carella, Cristiano Monzani

Subjects: Get full text

SINTESIS TURUNAN HIDRAZON DARI VANILIN SEBAGAI SENSOR KOLORIMETRI ANION by , SUHARMAN, , Dr. Bambang Purwono, M.Sc.

“…The azo-hydrazone compound 2-methoxy-6-(phenyldiazenyl)-4-(2- (2,4-dinitrophenyl)hydrazone)methyl)phenol (receptor 3) and 2-methoxy-6- (phenyldiazenyl)-4-(2-phenyhydrazone)methyl)phenol ( receptor 4) were synthesized by addition-elimination reaction of 4-hydroxy-3-methoxy-5-(phenylazo) benzaldehyde, while 4-((2-(2,4-dinitrophenyl)hydrazone)methyl)-2-methoxyphenol (receptor 2) was synthesized by addition-elimination reaction of vanillin and 2,4-dinitrophenylhydrazine. …”

Part I α,β-dehydrogenation of carbonyl compounds via selenium reagents elimination Part II Indium catalyzed cyclization reaction of acrylate by Zhang, Qiuchi

“…In in first part, selenium conducted elimination reaction of thioesters was discussed. This is a two-step one-pot reaction, which firstly give an alpha selenium substitute of thioesters, then oxidize the selenium intermediate gives an elimination reaction, which lead to the α,β-unsaturated thioester as the product. …”
Get full text
Get full text

Synthesis, characterization and quantum yields of multichromic poly(azomethine)s containing carbazole unit by İsmet Kaya, Esra Kılavuz, Kevser Temizkan

“…Following substances were synthesized as an initial step: N-hexyl-carbazole (CH) and N-hexyl-carbazolaldehyde (CHDA), via elimination reaction in argon media and N-hexyl-carbazole azomethine (CHA) via condensation reaction of CHDA with 4-aminophenol also poly(azomethine)s (P-Si-CHA, P-P-CHA) containing silane and phosphor via elimination reaction. …”
Get full text

(S)-3-Bromo-4-diallylamino-5-[(1R,2S,5R)-2-isopropyl-5-methylcyclohexyloxy]furan-2(5H)-one by Yue-He Tan, Jian-Hua Fu, Jian-Xiao Li, Zhao-Yang Wang

“…The title compound, C20H30BrNO3, was obtained via a tandem asymmetric Michael addition–elimination reaction of 3,4-dibromo-5-(S)-(l-menthyloxy)-2(5H)-furanone and diallylamine in the presence of potassium fluoride. …”
Get full text

N-[(2S)-4-Chloro-2-(l-menthyloxy)-5-oxo-2,5-dihydro-3-furyl]-l-alanine by Kai Yang, Zhao-yang Wang, Xiu-mei Song, Zhao-yang Li

“…The title compound, C17H26ClNO5, was prepared via a tandem asymmetric Michael addition–elimination reaction of (5S)-3,4-dichloro-5-(l-menthyloxy)furan-2(5H)-one and l-alanine in the presence of potassium hydroxide. …”
Get full text

N-{4-Bromo-2-[(S)-menthyloxy]-5-oxo-2,5-dihydro-3-furyl}-l-valine by Xiu-Mei Song, Zhao-Yang Li, Zhao-Yang Wang, Jian-Hua Fu

“…The title compound, C19H30BrNO5, was obtained via a tandem asymmetric Michael addition–elimination reaction of 3,4-dibromo-5-[(S)-l-menthyloxy]furan-2(5H)-one and l-valine in the presence of potassium hydroxide. …”
Get full text

<b>Vinyltriphenylphosphonium salt-mediated preparation of thiophene-containing electron-poor alkenes from acetylenic esters, 2-thienylmethanol and triphenylphosphine</b> by Nahid Shajari, Ali Ramazani, Yavar Ahmadi

“…Protonation of the highly reactive 1:1 intermediates, produced in the reaction between triphenylphosphine and alkyl acetylenecarboxylates (methyl acetylenecarboxylate, ethyl acetylenecarboxylate and ethyl phenylacetylenecarboxylate) by 2-thienylmethanol leads to vinyltriphenylphosphonium salts, which undergo an addition-elimination reaction in CH₂Cl₂ at room temperature to produce the corresponding <i>O</i>-vinylated alkenes <i>via</i> thiophene-containing phosphorus ylides intermediates in fairly high yields. …”
Get full text

Characterization and anti-aging activities of polysaccharide from Rana dybowskii Guenther by Yiping Li, Xuyan Zhao, Jing Wang, Qi Yu, Jing Ren, Ziye Jiang, Lili Jiao

“…The results of the β-elimination reaction indicated the presence of O-glycopeptide bonds in DGPIa. …”
Get full text

Study of the zinc action on the 2-chloroethyl 2-bromo-2-perfluoroalkylethanoates by Balsem Jedidi Yaich, Abakar Ould Amanatoullah, Nejib Hussein Mekni, Moufida Romdhani-Younes

“…When heated at 100°C, for 48 h, in the presence of an excess of zinc, the bromo-esters produce the symmetrical bis(vinyl perfluoroalkyl ester) ethoxide compounds, resulting from the BrZnF elimination reaction, followed by a dimerization reaction.…”
Get full text

Monitoring of acrylamide in the course of malting and in beer. by Renata MIKULÍKOVÁ, Zdeněk SVOBODA, Sylva BĚLÁKOVÁ, Simona MACUCHOVÁ

“…At higher temperatures acrylamide creation is substantially lower as the elimination reaction is faster than that producing acrylamide. …”
Get full text

Cyclization-activated Prodrugs by Rui Moreira, Nuno Vale, Paula Gomes

“…Intramolecular pathways have also a key role intwo-step prodrug activation, where an initial enzymatic cleavage step is followed by acyclization-elimination reaction that releases the active drug. This wor…”
Get full text

One-Step Synthesis of Monodisperse In-Doped ZnO Nanocrystals by Wang QingLing, Yang YeFeng, He HaiPing, Chen DongDong, Ye ZhiZhen, Jin YiZheng

“…<p>Abstract</p> <p>A method for the synthesis of high quality indium-doped zinc oxide (In-doped ZnO) nanocrystals was developed using a one-step ester elimination reaction based on alcoholysis of metal carboxylate salts. …”
Get full text

High PGL productivity in Bacillus subtilis by optimizing the SD sequence by Zhang Junjiao

“…Alkaline polygalacturonate lyase (PGL, EC 4.2.2.2) can catalyze the cleavage of a-1, 4-glycosidic bonds of polygalacturonate by a trans-elimination reaction and generate an unsaturated oligogalacturonates. …”
Get full text

Heterogeneous Catalysis with Zeolites, Sulphides and Metals by Roel Prins

“…The removal of nitrogen from N-containing aromatics takes place via a complex network of hydrogenation, hydrogenolysis and N-elimination reaction steps. To investigate the catalytic sites at which these steps take place, the kinetics of the hydrodenitrogenation of model compounds such as pyridine, piperidine, quinoline, decahydroquinoline and aniline is studied at elevated temperature and pressure in plug flow reactors.The mechanism of the formation of methanol from carbon monoxide and hydrogen at medium high pressure is studied in a plug flow reactor, as well as in a combination of a medium high pressure reactor with a surface science apparatus comprising X-ray photoelectron spectroscopy and secondary ion mass spectrometry. …”
Get full text

Heterogeneous Catalysis with Zeolites, Sulphides and Metals by Roel Prins

“…The removal of nitrogen from N-containing aromatics takes place via a complex network of hydrogenation, hydrogenolysis and N-elimination reaction steps. To investigate the catalytic sites at which these steps take place, the kinetics of the hydrodenitrogenation of model compounds such as pyridine, piperidine, quinoline, decahydroquinoline and aniline is studied at elevated temperature and pressure in plug flow reactors.The mechanism of the formation of methanol from carbon monoxide and hydrogen at medium high pressure is studied in a plug flow reactor, as well as in a combination of a medium high pressure reactor with a surface science apparatus comprising X-ray photoelectron spectroscopy and secondary ion mass spectrometry. …”
Get full text

SINTESIS SENYAWA PROP-2-EN-1-OL DARI GLISEROL LEMAK HEWANI SEBAGAI BAHAN BAKAR ALTERNATIF by , SARI NURUL QOLBI, , Dr. Winarto Haryadi, M.Si.

“…Synthesis was conducted via elimination reaction of glycerol with methanoic acid by distillation method at 195 â�� 260 ºC. …”

APPLICATIONS OF MBMS AND SURFACE SPECTROSCOPIC TECHNIQUES IN THE STUDY OF REACTION-MECHANISMS IN CBE - INVESTIGATIONS OF THE REACTIVITY OF TRITERTIARYBUTYLGALLIUM AND TRIISOBUTYLGA... by Foord, J, Singh, N, Fitzgerald, E, Davies, G, Jones, A

“…Lowered temperatures for the β-hydride elimination reaction are also observed for adsorbed tertiarybutyl radicals and the absence of β-methyl groups avoids the facile C deposition process seen for iso-butyl. …”

Synthesis and X-ray Crystal Structure of a Stable cis-1,2-bis(diphenylphosphino)ethene Monodentate Thiolate Platinum Complex and TGA Studies of its Precursors by Vaz Rodrigo H., Silva Rosalice M., Reibenspies Joseph H., Serra Osvaldo A.

“…The stable Pt(II) complex [Pt(SPh)2(dppen) (4), (dppen, Ph2PCH=CHPPh2) was obtained from [PtCl(SPh)2(SnPh3)cod] (1) (cod = 1,5-cyclooctadiene) by reductive elimination reaction of SnClPh3 and substitution of the cod ligand by the diphosphine, albeit in low yields. …”
Get full text

Highly brominated anthracenes as precursors for the convenient synthesis of 2,9,10-trisubstituted anthracene derivatives by Osman Cakmak, Leyla Aydogan, Kiymet Berkil, Ilhami Gulcin, Orhan Buyukgungor

“…We investigated the base-induced elimination reaction of hexabromide 3 under various conditions. …”
Get full text