Zobrazeno 1 - 10
of 18
pro vyhledávání: '"Sin Cheong Wong"'
Publikováno v:
Canadian Journal of Chemistry. 58:2380-2385
On the basis of pK measurements, 13C nmr, and chemical arguments, the zwitterionic structures 3 and 4 have been assigned to the two minor products obtained by sulfonating strychnine or brucine in water with a mixture of sulfur dioxide and manganese d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a5f0160722d6508be8bbb367346b67b7
https://doi.org/10.1139/v80-383
https://doi.org/10.1139/v80-383
Publikováno v:
Journal of the American Chemical Society. 100:7023-7027
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::69ff39826b798ff8f84b50678574f217
https://doi.org/10.1021/ja00490a040
https://doi.org/10.1021/ja00490a040
Publikováno v:
Canadian Journal of Chemistry. 56:931-934
The rates of hydrolysis of seven meta- and para-substituted ethyl thiolbenzoates and seven meta- and para-substituted ethyl thionbenzoates in various concentrations of sulfuric acid above 48% have been determined. The Yates–McClelland r and the Ham
Externí odkaz:
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https://doi.org/10.1139/v78-155
https://doi.org/10.1139/v78-155
Autor:
Sin Cheong Wong, John T. Edward
Publikováno v:
Canadian Journal of Chemistry. 57:1980-1985
The protonation of 2-thiohydantoin and of eight derivatives variously substituted at the 1-, 3-, and 5-positions with alkyl groups or a single phenyl followed h0 (Cox–Yates m* ∼ 1.1); however, the protonation of 3,5-diphenyl-2-thiohydantoin follo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a0fb7f0d4582fb4bc33aa8c5ccfbde64
https://doi.org/10.1139/v79-317
https://doi.org/10.1139/v79-317
Publikováno v:
The Journal of Organic Chemistry. 45:2315-2320
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::daf4d95c2650d6854708ec23f19215ae
https://doi.org/10.1021/jo01300a010
https://doi.org/10.1021/jo01300a010
Autor:
Sin Cheong Wong, John T. Edward
Publikováno v:
Journal of the American Chemical Society. 99:4229-4232
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c2a0e5d94e907a820b4863046b891c19
https://doi.org/10.1021/ja00455a003
https://doi.org/10.1021/ja00455a003
Autor:
Sin Cheong Wong, John T. Edward
Publikováno v:
Journal of the American Chemical Society. 99:7224-7228
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c119e6f5aaf7a8eddba5d9b8e4a3c2c2
https://doi.org/10.1021/ja00464a022
https://doi.org/10.1021/ja00464a022
Publikováno v:
Canadian Journal of Chemistry. 57:1456-1461
The tropane-3-spiro-5′-hydantoin (α isomer) obtained from tropinone by the Bucherer–Bergs reaction has been shown by 13C nmr and X-ray diffraction studies to have the 4′-carbonyl group in the equatorial position; the β isomer, obtained via th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::db7280b32172289041d6021b22f8e516
https://doi.org/10.1139/v79-238
https://doi.org/10.1139/v79-238
Publikováno v:
Canadian Journal of Chemistry. 56:935-940
The rates of hydrolysis of thioacetic, thiobenzoic, and three substituted thiobenzoic acids increase with concentration of solvent sulfuric or perchloric acid to a maximum in 30–40% acid and then decrease. Yates–McClelland r, Bunnett–Olsen [For
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d7a352188ffe82bf7f8036ac54f4b08e
https://doi.org/10.1139/v78-156
https://doi.org/10.1139/v78-156
Publikováno v:
Canadian Journal of Chemistry. 55:2331-2335
The protonation of eleven thioamides, five thioureas, and four thionbenzoates in aqueous sulfuric acid has been found to follow the HT acidity function with acceptable accuracy. Protonation constants pKTH+ obtained by use of HT agreed fairly well wit
Externí odkaz:
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https://doi.org/10.1139/v77-320
https://doi.org/10.1139/v77-320