Zobrazeno 1 - 10
of 98
pro vyhledávání: '"H. Slebocka-Tilk"'
Publikováno v:
Journal of the American Chemical Society. 125:1851-1858
An NMR study of the rates of hydroxide-promoted hydrolysis of formamide in aqueous media of varying mole fraction D(2)O (n) was performed at [LO(-)] = 1.42 M, T = 25 degrees C, to shed light on whether the mechanism involves a nucleophilic attack of
Publikováno v:
Canadian Journal of Chemistry. 80:1343-1350
A study of the hydrolysis of formamide is reported with the aims of isolating the water reaction for hydrolysis from the acid and base hydrolysis terms and determining the solvent deuterium kinetic isotope effect (dkie) on base-catalyzed hydrolysis.
Publikováno v:
Canadian Journal of Chemistry. 77:1577-1588
The hydrolysis of p-nitrophenyldiphenyl phosphate (PNPDPP, 7) catalyzed by N-dodecylaminoethanol (6a), N-tetradecylaminoethanol (6b), N-methyl-N-tetradecylaminoethanol (6c), and N-hexadecylaminoethanol (6d) was investigated at 25°C at various pH val
Autor:
A. Neverov, J. L. Gainsforth, S. Motallebi, R. S. Brown, O. Donini, Mariusz Klobukowski, H. Slebocka-Tilk
Publikováno v:
Journal of the American Chemical Society. 120:2578-2585
The electrophilic addition of Br2 to specifically deuterated cyclohexenes (1−5) was studied methanol (MeOH) by stopped-flow kinetics in order to determine a deuterium kinetic isotope effect (DKIE) ...
Autor:
H. Slebocka-Tilk, Christopher G. Rescorla, Salma Shirin, Robert S. Brown, and Andrew J. Bennet
Publikováno v:
Journal of the American Chemical Society. 119:10969-10975
The water catalyzed hydrolyses of p-nitrotrifluoroacetanilide (3) and trifluoroacetanilide (8) were studied at various pH's and temperatures. The activation parameters for the water reactions of 3 and 8 are: ΔH⧧ = 14.4 ± 0.6 and 11.7 ± 0.3 kcal/
Autor:
Robert S. Brown, H. Slebocka-Tilk
Publikováno v:
The Journal of Organic Chemistry. 61:8079-8082
The acid-catalyzed hydration of anti-sesquinorbornene (1) has been studied at 25 degrees C in 20% DME/H(2)O from 0.001 M < [HC1] < 0.05 M. The second-order rate constant for hydration is 5.35 +/- 0.07 M(-)(1) s(-)(1) which can be compared with a valu
Publikováno v:
The Journal of Organic Chemistry. 61:3458-3466
The kinetics and products of addition of Br2 in MeOH to anti-sesquinorbornene (1) have been studied at 25 °C in the presence of varying [LiBr]. The products consist of ∼10% cis dibromide and 90% cis methoxy bromide, the amounts of these being inde
Publikováno v:
Journal of the American Chemical Society. 117:8769-8776
Autor:
G. H. M. Aarts, Roberto Ambrosetti, H. Slebocka-Tilk, Andrew J. Bennet, Robert S. Brown, Roberto Bianchini, Donata Ines Maria Catalano, Cinzia Chiappe, Giuseppe Bellucci
Publikováno v:
The Journal of Organic Chemistry. 58:3401-3406
A dynamic 1 H NMR study of the adamantylideneadamantane (Ad=Ad)/Br 2 system has been undertaken in d 4 -1,2-dichloroethane as a function of excess [Br 2 ] and temperature. Bromine site exchange rate constants (k NMR ) nvere determined by line shape a
Publikováno v:
The Journal of Organic Chemistry. 58:2122-2127
The trans-2-bromotriflate of cycloherane (4) has been solvolyzed at ambient temperatures in HOAc and MeOH containing varying [Br - ] and in the presence of 0.5 M of a scavenger olefin, cyclopentene. The kinetics of solvolysis of 4 have been determine