Zobrazeno 1 - 10
of 147
pro vyhledávání: '"Harold Kwart"'
Publikováno v:
Annals of the New York Academy of Sciences. 106:709-721
Autor:
Harold Kwart, Kenneth King
Publikováno v:
Carboxylic Acids and Esters (1969)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6252edd3ea4fd5060cf464d7dbbdc19d
https://doi.org/10.1002/9780470771099.ch8
https://doi.org/10.1002/9780470771099.ch8
Autor:
Harold Kwart, Ann Gaffney Horgan, Henry J. Shine, Martin W. Brechbiel, Koon Ha Park, Henryk Zmuda
Publikováno v:
Journal of the American Chemical Society. 104:2501-2509
Kinetic isoptope effects (KIE) in the acid-catalyzed rearrangement of hydrazobenzene to benzidine and diphenyline have been measured. Nitrogen KIE were determined by whole-molecule mass spectrometry on each of the products obtained at low and 100% co
Autor:
Harold Kwart
Publikováno v:
Accounts of Chemical Research. 15:401-408
Publikováno v:
Journal of the American Chemical Society. 104:5181-5184
The nitrogen kinetic isotope effects (KIE) for the acid-catalyzed rearrangement of 4-methoxyhydrazobenzene (1b) into the p-semidine (4-methoxy-4'-aminodiphenylamine, 2b) and o-semidine(2-amino-5-methoxydiphenylamine, 3b) have been measured and are 1.
Publikováno v:
The Journal of Organic Chemistry. 48:4509-4513
Reactions d'elimination β realisees sur le α-bromo benzenepropionate d'ethyle et le α-bromo α-methyl benzenepropionate de methyle
Autor:
Harold Kwart, Kazimiera A. Wilk
Publikováno v:
The Journal of Organic Chemistry. 50:3038-3041
Autor:
Kazimiera A. Wilk, Harold Kwart
Publikováno v:
The Journal of Organic Chemistry. 50:817-820
L'etude est faite pour les composes C 6 H 5 CH 2 CH 2 X avec X=Br, p-CH 3 C 6 H 4 SO 3 , + S(CH 3 ) 2 , + N(CH 3 ) 3 . On applique les criteres TDKIE aux eliminations E2 (TDKIE= influence de la temperature sur l'effet isotopique cinetique H/D)
Autor:
Harold Kwart, Anne Gaffney
Publikováno v:
The Journal of Organic Chemistry. 48:4502-4508
The TDKIE (temperature dependence of the kinetic isotope effect) criteria of transition state geometry in H-transfer reactions have been applied in the title reactions; a bent transition state consistent with the geometry of the E2C reaction has been
Autor:
Harold Kwart
Publikováno v:
Phosphorus and Sulfur and the Related Elements. 15:293-310
The thio-Claisen rearrangement of allyl aryl sulfides was found to be catalyzed by nucleophiles exerting only a small fraction of their nucleophilic abilities. A mechanism of nucleophilic triggering of concerted sigmatropic rearrangement was proposed