Results 11 to 20 of about 106,557 (221)

Tetramethylammonium dimethyl (phenylsulfonylamido)phosphate(1−)

open access: yesActa Crystallographica Section E, 2012
The title compound, C4H12N+·C8H11NO5PS−, was obtained from tetramethylammonium hydroxide and dimethyl(phenylsulfonyl)amidophosphate. The tetramethylammonium cation has a slightly distorted tetrahedral configuration and the N&#8212 ...
Elizaveta A. Trush   +4 more
doaj   +2 more sources

Tetramethylammonium hydroxide (TMAH) as an efficient catalyst for the one-pot synthesis of 1,2-dihydro-1-aryl- naphtho[1,2-e][1,3]oxazine-3-ones under solvent-free conditions [PDF]

open access: yesBulletin of the Chemical Society of Ethiopia, 2016
1,2-Dihydro-1 -arylnaphtho[1,2-e][1,3]oxazine-3-one derivatives were synthesized in high yields using an efficient and one-pot condensation of 2-naphthol, aromatic aldehydes and urea catalyzed by tetramethylammonium hydroxide (TMAH) under solvent-free ...
N. Montazeri, E. M. Nezhad
doaj   +2 more sources

Recent applications of tetramethylammonium hydroxide (TMAH) in the sample preparation for elemental analysis by spectroanalytical techniques

open access: yesAdvances in Sample Preparation
Application of tetramethylammonium hydroxide for the treatment of samples prior to elemental analysis over the last five years is approached in this review article.
Uillian Mozart Ferreira Mata Cerqueira   +6 more
doaj   +2 more sources

Influence of Tetramethylammonium Hydroxide Cation Concentration on Omega Zeolite Crystal Size [PDF]

open access: yesARO-The Scientific Journal of Koya University
Omega zeolite nanocrystals can be synthesized hydrothermally from a sodium aluminosilicate solution characterized by a 5.96 Na2O/Al2O3 constant molar ratio, carried out at a maximum temperature of about 100°C for 4 days after aging at room temperature ...
Muwafaq M. Yahya   +2 more
doaj   +2 more sources

Efficient and selective microwave-assisted O-methylation of phenolic compounds using tetramethylammonium hydroxide (TMAH)

open access: yesGreen Processing and Synthesis, 2019
In this study, an efficient method for O-methylation of phenolic compound using tetramethylammonium hydroxide (TMAOH) as a new alkylating agent under microwave irradiation was developed.
Gholipour Fatemeh   +2 more
doaj   +2 more sources

Synthesis of ω-Chloroalkyl Aryl Ketones via C–C Bond Cleavage of tert-Cycloalkanols with Tetramethylammonium Hypochlorite [PDF]

open access: yesMolecules
An oxidative C–C bond cleavage of tert-cycloalkanols with tetramethylammonium hypochlorite (TMAOCl) has been developed. TMAOCl is easy to prepare from tetramethylammonium hydroxide, and the combination of TMAOCl and AcOH effectively promoted the C–C bond
Natsumi Hanazawa   +3 more
doaj   +2 more sources

Investigation of tetramethylammonium hydroxide etching selectivity using micro Raman spectroscopy.

open access: yes, 1999
Investigation of tetramethylammonium hydroxide etching selectivity using micro Raman ...
Sung Bok. Lee (7970309)
core   +6 more sources

Kinetic Behavior of Quaternary Ammonium Hydroxides in Mixed Methane and Carbon Dioxide Hydrates

open access: yesMolecules, 2021
This study evaluates the kinetic hydrate inhibition (KHI) performance of four quaternary ammonium hydroxides (QAH) on mixed CH4 + CO2 hydrate systems.
Muhammad Saad Khan   +9 more
doaj   +1 more source

The use of tetramethylammonium hydroxide in the Zimmermann reaction [PDF]

open access: yesJournal of Clinical Pathology, 1961
The use of tetramethylammonium hydroxide (T.M.A.H.) in place of potassium hydroxide in the Zimmermann reaction has been investigated. Although various pure steroids have different colour equivalents, a comparison of the results of 17-ketosteroid and 17-hydroxycorticosteroid estimations on a series of urines showed that the differences for the two ...
V H, JAMES, M, DE JONG
openaire   +2 more sources

Novel HPLC-UV method for simultaneous determination of valsartan and atenolol in fixed dosage form; Study of green profile assessment [PDF]

open access: yesPharmacia, 2021
Aim of this work was to develop the first simple, rapid, green, economical and selective HPLC method for simultaneous quantification of the cited drugs in their challenging binary mixture.
Kateryna Peleshok   +6 more
doaj   +3 more sources

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