Results 171 to 180 of about 12,453 (230)

Catalytic Solvolysis of Ammonia Borane

Angewandte Chemie - International Edition, 2010
Chi-Wing Tsang
exaly   +3 more sources

Solvolysis of chenodeoxycholic acid sulfates

Steroids, 1981
Chemical solvolysis of chenodeoxycholic acid sulfates was studied using 4 published methods. Quantitative recovery of chenodeoxycholic acid from the 3-sulfate was obtained with each method. However, only 2 methods yielded chenodeoxycholic acid after solvolysis of the 7-sulfate.
B I, Cohen, K, Budai, N B, Javitt
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Kinetics of Solvolysis of Intrazole

Journal of Pharmaceutical Sciences, 1972
The kinetics of degradation of intrazole [1-(pchlorobenzoyl)-3-(1 H-tetrazol-5-ylmethyl)indole] in solution was investigated at 65 ± 0.1° at constant ionic strength of 0.5 over a wide pH range. The observed rates, followed by measuring intact intrazole, obeyed first-order kinetics. The catalytic effect of a phosphate buffer was found to be greater than
V K, Prasad, R A, Ricci, A P, Granatek
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Solvolysis of 3, 4-dialkyl sydnones

Journal of Pharmaceutical Sciences, 1967
The kinetics of solvolysis of various dialkyl sydnones: 3- tert -butyl-4-methyl, 3- n -propyl-4-ethyl, 3-ethyl-4-methyl, 3-isopropyl-4-ethyl, 3- n -propyl-4-methyl, and 3- n -propyl-4- n -butyl sydnone, have been studied spectrophotometrically as a function of HCl and NaOH concentrations, pH, and temperature. The reactivity on acid-catalyzed solvolysis
E R, Garrett, P J, Mehta
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Solvolysis of aryldimethylphenoxysilanes

Journal of Organometallic Chemistry, 1973
Abstract The logarithms of the rate constants for the acid- and base-catalysed solvolysis of phenoxysilanes ( p -XC 6 H 4 )Me 2 SiOPh (X = F, Cl, Br, H, MeO) in absolute ethanol correlate with the σ 0 constants of the substituents, the ϱ values being −0.57 for the acid- and +0.19 for the base-catalysed process.
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Alkaline solvolysis of diaminophosphates

Collection of Czechoslovak Chemical Communications, 1983
Mechanism of alkaline solvolysis of phenyl diaminophosphates is discussed on the basis of its selectivity, activation entropy and steric effects. All methods used show that the reaction proceeds by SN2 mechanism via an intermediate, containing a pentavalent phosphorus.
Jiří Mollin, Jiří Láznička, František Kašpárek   +2 more
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Vinylic cations from solvolysis. Part XI. Solvolysis of triarylvinyl arenesulphonates and bromides

Journal of the Chemical Society, Perkin Transactions 2, 1972
Triarylvinyl arenesulphonates and bromides, Ar22CC(Ar1)X (X = Br or O·SO2Ar3), were solvolysed in 70% acetone, and tris-p-methoxyphenylvinyl tosylate (II–OTs) and brosylate were solvolysed in acetic acid. The products were 2,2-diarylacetophenones and tris-p-methoxyphenylvinyl acetate, respectively.
Zvi Rappoport, Joseph Kaspi
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Solvolysis of a Substituted Imidazoline, Mazindol

Journal of Pharmaceutical Sciences, 1975
Hydrolysis of mazindol to form 2-(2-aminoethyl)-3-(p-chlorophenyl)-3-hydroxyphthalimidine was followed spectro-photometrically in aqueous solutions at temperatures between 37 and 70degree, pH values up to 7.6, and an ionic strength of 0.2. The effects of acetate, formate, and phosphate buffers as well as ionic strength on the observed rate constants ...
H V, Maulding, P, Turi, D, Grossman, J P, Nazareno   +3 more
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Cadoxen solvolysis of cellulose

1988
Publisher Summary Cellulose is insoluble in water and in most organic solvents because of strong inter- and intramolecular hydrogen bonding. A number of cellulose solvents exist although it is difficult to characterize the solvation properties of each because of the broad differences among the cellulosic polymers and fibers themselves, such as size ...
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