Regioselective Cleavage Reaction of the Aromatic Methylenedioxy Ring. V. Cleavage with Sodium Alkoxides - Alcohols, Potassium tert-Butoxide - Alcohols, Dimsyl Anion - Methyl Alcohol, Metallic Sodium - Alcohols, and Sodium Cyanide in Dipolar Aprotic Solvents.
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چکیده
منابع مشابه
Sodium Hydroxide Catalyzed Dehydrocoupling of Alcohols with Hydrosilanes.
An O-Si bond construction protocol employing abundantly available and inexpensive NaOH as the catalyst is described. The method enables the cross-dehydrogenative coupling of an alcohol and hydrosilane to directly generate the corresponding silyl ether under mild conditions and without the production of stoichiometric salt byproducts. The scope of both coupling partners is excellent, positioning...
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HPLC/ESI-MS analyses of alcohol solutions of ampicillin and amoxicillin have shown that the two drugs react very readily with alcohols (methanol and ethanol) at room temperatures, without the presence of any catalyst. Products of methanolysis were detected even when methanol was used as a mobile phase, in HPLC/ESI-MS analysis of a water solution of ampicillin and amoxicillin. Therefore, neither...
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ژورنال
عنوان ژورنال: Chemical and Pharmaceutical Bulletin
سال: 1992
ISSN: 0009-2363,1347-5223
DOI: 10.1248/cpb.40.1691