Zobrazeno 1 - 10
of 241
pro vyhledávání: '"YUHO TSUNO"'
Publikováno v:
Canadian Journal of Chemistry. 93:1327-1334
The total stabilization energies (TSEs) and anion stabilization energies (ASEs) of ring-substituted (X-) Meisenheimer complexes featuring two NO2 groups in the ring were determined using appropriate isodesmic reactions. The structures and energies of
Publikováno v:
ChemPlusChem. 78:1099-1108
The relative gas-phase acidities of 25 ring-substituted benzoic and phenylacetic acids were theoretically determined with proton-transfer reactions. The energies and geometries of the acids and their corresponding anions, which were involved in the r
Publikováno v:
Journal of Physical Organic Chemistry. 26:115-123
Relative gas-phase stabilities of 25 kinds of ring-substituted phenoxide anions were determined theoretically using proton transfer reactions. The energies and geometries of phenoxide anions and their corresponding phenols, which are involved in the
Publikováno v:
Journal of Physical Organic Chemistry. 23:1057-1065
The substituent effects on the relative gas-phase stabilities of 16 kinds of benzylic anion systems were determined theoretically using proton transfer reactions. The energies and geometries of ring-substituted anions and corresponding neutral specie
Autor:
Yuho Tsuno, Ryoji Fujiyama, Toshihiro Munechika, Aiko Shiiyama, Md. Ashadul Alam, Mizue Fujio
Publikováno v:
Journal of Physical Organic Chemistry. 23:819-827
Solvolysis rates of 2-(aryldimethylsilyl)-1-methylethyl and 2-(aryldimethylsilyl)-1-tert-butylethyl trifluoroacetates were determined conductimetrically in 60% (v/v) aqueous ethanol. The effects of aryl substituents at the silicon atom on the solvoly
Publikováno v:
Bulletin of the Chemical Society of Japan. 80:2378-2383
Solvolysis rates of 2-[dimethyl(X-phenyl)silyl]-1-(Y-phenyl)ethyl 3,5-dinitrobenzoates were determined conductimetrically in 60% (v/v) aqueous ethanol. The effects of substituents X in the β-arylsi...
Publikováno v:
The Journal of Organic Chemistry. 72:4816-4821
A kinetic study is reported for reactions of Y-substituted phenyl X-substituted cinnamates (1a-e and 3a-g) and benzoates (2a-e and 4a-g) with a series of alicyclic secondary amines in 80 mol % H2O/20 mol % DMSO at 25.0 +/- 0.1 degrees C. Reactions of
Publikováno v:
Bulletin of the Chemical Society of Japan. 79:1091-1099
Solvolysis rates of 2-(dimethylphenylsilyl)-1-(Y-phenyl)ethyl 3,5-dinitrobenzoates were determined conductimetrically in 60% (v/v) aqueous ethanol. In order to clarify the nature of the β-Si partic...
Publikováno v:
Org. Biomol. Chem.. 4:2979-2985
A kinetic study is reported for the reactions of 4-nitrophenyl X-substituted benzoates (1a-1) and Y-substituted phenyl benzoates (2a-1) with two anionic nucleophiles (OH(-) and CN(-)) and three amines (piperidine, hydrazine, and glycylglycine) in 80
Autor:
Md. Ashadul Alam, Mai Uchida, Ryoji Fujiyama, Yuho Tsuno, Mizue Fujio, Ayumi Okada, Hans-Ullrich Siehl
Publikováno v:
Bulletin of the Chemical Society of Japan. 78:1834-1842
Solvolysis rates of 2-(aryldimethylsilyl)ethyl chlorides were determined conductimetrically in 60% (v/v) aqueous ethanol. The effects of aryl substituents at the silyl atom on the solvolysis rates ...