On the Effects of Acetaldehyde, Ether Peroid, Ethyl Mercaptan, Ethyl Sulphid and Several Ketones???Di-Methyl, Ethyl Methyl and Di-Ethyl???When Added to Anesthetic Ether*

1927 ◽  
Vol 6 (3) ◽  
pp. 131???140 ◽  
Author(s):  
Wesley Bourne
Keyword(s):  
Methyl Ethyl ◽  
Ethyl Mercaptan ◽  
Ethyl Methyl

SiO2-POCl2 nano-particles promoted the synthesis of novel structure of alkyl 2-oxo-3,4-diaryloxazolidine-5-carboxylate derivatives

2020 ◽  
Vol 17 ◽  
Author(s):  
Mehdi Abaszadeh ◽  
Seyyed Jalal Roudbaraki ◽  
Hossein Yarahmadi ◽  
Majid Ghashang
Keyword(s):  
Nano Particles ◽  
Methyl Ethyl ◽  
Aniline Derivatives ◽  
Ethyl Methyl ◽  
Novel Structure ◽  
Three Component Reaction ◽  
High Yields

: Silica-POCl2 was used as the promoter for the three-component reaction of ethyl/methyl 3-phenyl glycidate, aniline derivatives, and dimethylcarbonate, leads to the synthesis of methyl/ethyl 2-oxo-4-phenyl-3-aryloxazolidine-5-carboxylate derivatives. The desired product was obtained in high yields.

Behaviour of isomeric methyl ethyl and ethyl methyl halosuccinates under electron impact. Elimination of a halogen atom by a multi-step mechanism

1991 ◽  
Vol 26 (9) ◽  
pp. 793-798 ◽  
Author(s):  
D. Bornstein ◽  
A. Mandelbaum ◽  
I. Vidavsky ◽  
B. Domon ◽  
D. Mueller ◽  
...  
Keyword(s):  
Electron Impact ◽  
Halogen Atom ◽  
Methyl Ethyl ◽  
Ethyl Methyl ◽  
Step Mechanism ◽  
Isomeric Methyl

scholarly journals XVII.—Studies on the Pharmacological Action of Tetra-Alkyl-Ammonium Compounds: III. The Action of Methyl-Ethyl-Ammonium Chlorides

1915 ◽  
Vol 50 (2) ◽  
pp. 481-516 ◽  
Author(s):  
C. R. Marshall
Keyword(s):  
Ammonium Chloride ◽  
Pharmacological Action ◽  
Methyl Ethyl ◽  
Ethyl Methyl ◽  
Alkyl Ammonium ◽  
Ammonium Compounds ◽  
Chloride Methyl

In view of the differences observed in the pharmacological action of tetra-methyl- and tetra-ethyl-ammonium chlorides, it seemed of interest to investigate the actions of the methyl-ethyl-ammonium compounds. The chlorides of these compounds—namely, tri-methyl-ethyl-ammonium chloride, di-methyl-di-ethyl-ammonium chloride, methyl-tri-ethyl-ammonium chloride—were kindly prepared for me by Dr J. E. Mackenzie, who has published the mode of preparation and the analysis of them.The only references I have found to the pharmacological action of the members of this series are brief statements by Tappeiner and Boehm. Tappeiner says that tri-ethyl-methyl-ammonium chloride, unlike tetra-methyl-ammonium chloride, does not produce temporary paralysis of the respiration; Boehm that tri-methyl-ethyl-ammonium chloride, like tetra-methyl-ammonium chloride, causes contracture of an isolated frog's muscle when a solution is applied to it.

scholarly journals Psilacetin derivatives: fumarate salts of the methyl–ethyl, methyl–allyl and diallyl variants of the psilocin prodrug

2021 ◽  
Vol 77 (2) ◽  
pp. 101-106
Author(s):  
Duyen N. K. Pham ◽  
Andrew R. Chadeayne ◽  
James A. Golen ◽  
David R. Manke
Keyword(s):  
Solid State ◽  
Hydrogen Bonds ◽  
Fumaric Acid ◽  
Acid Molecule ◽  
Methyl Ethyl ◽  
Ethyl Methyl ◽  
Solid State Structures ◽  
Fumarate Salt

The solid-state structures of the salts of three psilacetin derivatives, namely, 4-acetoxy-N-ethyl-N-methyltryptammonium (4-AcO-MET) hydrofumarate {systematic name: [2-(4-acetyloxy-1H-indol-3-yl)ethyl](methyl)ethylazanium 3-carboxyprop-2-enoate}, C15H21N2O2 +·C4H3O4 −, 4-acetoxy-N-allyl-N-methyltryptammonium (4-AcO-MALT) hydrofumarate {systematic name: [2-(4-acetyloxy-1H-indol-3-yl)ethyl](methyl)prop-2-enylazanium 3-carboxyprop-2-enoate}, C16H21N2O2 +·C4H3O4 −, and 4-acetoxy-N,N-diallyltryptammonium (4-AcO-DALT) fumarate–fumaric acid (1/1) (systematic name: bis{[2-(4-acetyloxy-1H-indol-3-yl)ethyl]diprop-2-enylazanium} but-2-enedioate–(E)-butenedioic acid (1/1)), 2C18H23N2O2 +·C4H2O4 2−·C4H4O4, are reported. All three salts possess a protonated tryptammonium cation. The 4-AcO-MET and 4-AcO-MALT compounds are charge-balanced by 3-carboxyacrylate (hydrofumarate) anions. The 4-AcO-DALT complex crystallizes as a two-to-one tryptammonium-to-fumarate salt, which co-crystallizes with a fumaric acid molecule. Each structure is consolidated by N—H...O and O—H...O hydrogen bonds.

scholarly journals POLYCYCLOALCANE HYDROCARBONS IN TARIBANI OIL

World Science ◽  
2018 ◽  
pp. 33-41
Author(s):  
Natela Khetsuriani ◽  
Elza Topuria ◽  
Madlena Chkhaidze ◽  
Vladimer Tsitsishvili
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Crude Oil ◽  
Thermal Diffusion ◽  
Gas Chromatography Mass Spectrometry ◽  
Methyl Ethyl ◽  
Ethyl Methyl ◽  
Main Components ◽  
Diffusion Separation ◽  
Concentrate Preparation

For the purpose of extraction and identification of cyclic alkane hydrocarbons in oil from the Taribani field, Georgia, concentrates isolated from 200-350oC fractions have been studied. The concentrate preparation included the following steps: (a) distillation of a crude oil, (b) dearomatization of distillates by silica gel, (c) three-stage thermal diffusion separation of isoalkanes and cycloalkanes, and (d) thiourea adduction. Ten thermal diffusion fractions were obtained. A mixture of the IX and X fractions and separately the VIII fraction were studied. The extracts from these fractions with thiourea were studied as well. Composition of concentrates has been determined by the gas chromatography – mass spectrometry (GC-MS) method.The main components of the VIII thermodiffusion fraction were C11- C22 isoprenoid alkanes. Among them the predominant were pristane C19 and the phytane C20, the well-known biomarkers of oil. In the VIII thermodiffusion faction including dimethyl-, trimethyl-, tetramethyl-, ethyl-, methyl-ethyl-, diethyl-, propyl, methyl-propyl adamantanes, were identified.

The Use of Styrenes as Embedding Media for Electron Microscopy

1971 ◽  
Vol 29 ◽  
pp. 488-489
Author(s):  
Edward D. De-Lamater ◽  
Eric Johnson ◽  
Thad Schoen ◽  
Cecil Whitaker
Keyword(s):  
Electron Microscopy ◽  
Surface Tension ◽  
Ultraviolet Light ◽  
Methyl Ethyl Ketone Peroxide ◽  
Methyl Ethyl ◽  
Styrene Polymerization ◽  
Radical Initiation ◽  
Tertiary Butyl ◽  
Low Viscosity ◽  
Free Radical Initiation

Monomeric styrenes are demonstrated as excellent embedding media for electron microscopy. Monomeric styrene has extremely low viscosity and low surface tension (less than 1) affording extremely rapid penetration into the specimen. Spurr's Medium based on ERL-4206 (J.Ultra. Research 26, 31-43, 1969) is viscous, requiring gradual infiltration with increasing concentrations. Styrenes are soluble in alcohol and acetone thus fitting well into the usual dehydration procedures. Infiltration with styrene may be done directly following complete dehydration without dilution.Monomeric styrenes are usually inhibited from polymerization by a catechol, in this case, tertiary butyl catechol. Styrene polymerization is activated by Methyl Ethyl Ketone peroxide, a liquid, and probably acts by overcoming the inhibition of the catechol, acting as a source of free radical initiation.Polymerization is carried out either by a temperature of 60°C. or under ultraviolet light with wave lengths of 3400-4000 Engstroms; polymerization stops on removal from the ultraviolet light or heat and is therefore controlled by the length of exposure.

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