Výsledky vyhledávání - "Gregorio G. Trigo"

Stereochemistry of the Bucherer–Bergs and Strecker reactions of tropinone, cis-bicyclo[3.3.0]octan-3-one and cis-3,4-dimethylcyclopentanone

Autor: Emilia Santos, Sin Cheong Wong, Carmen Avendaño, Gregorio G. Trigo, John T. Edward

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

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N-substituted granatanine-3-spiro-5′-hydantoins as zwitterions. Potentiometric determination of the pK1and pK2values for the conjugate acids

Autor: Gregorio G. Trigo, Emilia Santos, Isabel Rosillo, Carmen Avendaño

Publikováno v: J. Chem. Soc., Perkin Trans. 2. :389-390

Remarkable pK1, and pK2 values for N-substituted granataninespirohydantoins which have the zwitterion structure (II) have been found by potentiometry. Previously proposed conformations for the conjugate acids (H2Z+) and the zwitterion forms (HZ+–)

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::fbd0d296b844817dd2d5424b8ea2c024
https://doi.org/10.1039/p29820000389

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