Výsledky vyhledávání - "Silvia Thomi"

Reactivity of the Coordinated Hydroperoxo Ligand

Autor: Alan F. Williams, Silvia Thomi, Chantal Robyr, Shaukat A. Mirza, Bernard Bocquet

Publikováno v: Inorganic Chemistry. 35:1332-1337

The reactivity of the hydroperoxo complex [Co(CN)(5)OOH](3)(-) has been studied in aqueous solution. The complex undergoes acid-catalyzed aquation (k = 1.89(5) x 10(-)(2) s(-)(1), pK(a) = 5.21(4), T = 20 degrees C, I = 0.1 M). Assuming an I(d) mechan

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https://doi.org/10.1021/ic950950z

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ChemInform Abstract: Asymmetric Alkylation of N-Acylsultams. A General Route to Enantiomerically Pure Crystalline C(α,α)-Disubstituted Carboxylic Acid Derivatives

Autor: Silvia Thomi, Wolfgang Oppolzer, Robert Moretti

Publikováno v: ChemInform. 21

Successive treatment of acylsultams 2 with nBuLi or NHMDS and primary alkyl halides, followed by crystallization, gave pure C(α)-alkylation products 4 and, via their non-destructive cleavage, enantiomerically pure alcohols 5 or carboxylic acids 6 .

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https://doi.org/10.1002/chin.199020125

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Asymmetric alkylation of N-acylsultams: A general route to enantiomerically pure, crystalline C(α,α)-disubstituted carboxylic acid derivatives

Autor: Silvia Thomi, Wolfgang Oppolzer, Robert Moretti

Publikováno v: Tetrahedron Letters, Vol. 30, No 41 (1989) pp. 5603-5606

Successive treatment of acylsultams with nBuLi or NHMDS and primary alkyl halides, followed by crystallization, gave pure C(α)-alkylation products and, via their non-destructive cleavage, enantiomerically pure alcohols or carboxylic acids. Alkylatio

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https://doi.org/10.1016/s0040-4039(01)93810-9

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Asymmetric alkylations of a sultam-derived glycinate equivalent: practical preparation of enantiomerically pure α-amino acids

Autor: Silvia Thomi, Wolfgang Oppolzer, Robert Moretti

Publikováno v: Tetrahedron Letters, Vol. 30, No 44 (1989) pp. 6009-6010

Deprotonation/alkylation of sultam-derived N-[bis(methyl)thiomethylene]glycinate equivalent 3 gave crystalline products 5 which on mild hydrolysis furnished α-amino acids 7 (~100% e.e.) in high overall yield. Deprotonation/alkylation/mild hydrolysis

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https://archive-ouverte.unige.ch/unige:152728

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