A series of 2-amino-1-(4-substituted-2,5-dimethoxyphenyl)butanes (Table V) was prepared as analogues of (R)-2-amino-1-(2,5-dimethoxy-4-methylphenyl)butane (1a). 1-(2,5-Dimethoxyphenyl)-2-(N-phthalimido)butane (7) was utilized as a synthetic intermediate common to many of the target compounds. Animal data are presented indicating that most of these analogues have low hallucinogenic potential. Se...

In the article, n-butane, which is a waste of “Shortangazkimyo” LLC, has porosity 33% obtained by reaction with potassium permanganate solution in aqueous solutions at temperatures above 100 ℃ and pressures 1 atmosphere. presence catalyst containing xTiO 2 •(1-x)SiO2 (x=0.0001-0.04), influence concentration, ratio n-butane to permanganate, solvent, temperature, pH other factors on rate oxidatio...

Computational fluid dynamics (CFD) has become a widely used tool for predicting hazardous scenarios. The present study aimed to assess CFD prediction applied LPG containers under heating. Thus, two cylinders, each filled with propane or butane, were experimentally exposed fire, and the pressure increment was recorded. results compared those provided by method (Ansys Fluent). limitations of are ...

In this study, evidence for two novel metabolic processes catalyzed by a filamentous fungus, Graphium sp. strain ATCC 58400, is presented. First, our results indicate that this Graphium sp. can utilize the widely used solvent diethyl ether (DEE) as the sole source of carbon and energy for growth. The kinetics of biomass accumulation and DEE consumption closely followed each other, and the molar...

The catalysis of n-butane isomerization over iron-promoted tungstated zirconia (F1.2WZ) and platinum–iron-promoted tungstated zirconia (P/F1.2WZ) catalysts was studied and correlated to the catalyst characterization results. In the singly promoted F1.2WZ catalyst, we suggest that the iron species promotes the n-butane isomerization reaction through a redox effect. The formation of W–O–Fe linkag...

The title compound, C(18)H(16)Br(2)N(4), is a linear double Schiff base compound having two parallel 4-bromo-phenyl groups connected across a crystallographic inversion centre by flexible C-C and C=N-N=C bonds and stabilized in the solid state by weak inter-molecular Br⋯Br inter-actions [3.7992 (11) Å], generating an infinite two-dimensional network structure.

Objective: To assess the mechanical effects of nickel-titanium orthodontic archwire flaming and their distribution along the wire. Methodology: Two sizes of pre-formed austenitic nickel-titanium archwires were tested (n=10). The terminal 5mm of each wire was heated for five seconds using a butane lighter. Micro-hardness testing was used to determine the heat-affected zone for all wires. Cantile...

The syntheses of butane-2,3-diacetal protected tartrate derivatives are described using continuous flow processing techniques with in-line purification and I.R. analytical protocols.

The title compound, [NH3(CH2)4NH3](2+)·SiF6 (2-), is a hybrid built from an organic butane-1,4-di-ammonium dication linked to a hexa-fluoro-silicate mineral anion. Both ions posses inversion symmetry. In the anion the Si atom is located on an inversion center, while in the cation the center of inversion is situated at the mid-point of the central -CH2-CH2- bond. The Si atom is surrounded by six...