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Carboxy ester hydrolysis reactivity

Carboxy ester hydrolysis reactivity of mononuclear zinc complexes 107... [Pg.79]

CARBOXY ESTER HYDROLYSIS REACTIVITY OF MONONUCLEAR ZINC COMPLEXES... [Pg.107]

The following reactions demonstrate that the electrophilic ester carbonyl groups of (16) predominantly determine the reactivity Heating (16b) for several hours in ethanol saturated with HC1 affords (16a) by transes-terfication. Ester hydrolysis and decarboxylation occur at room temperature in the presence of dilute alkaline hydroxide. Hydrolysis of (16a R = R2 = R3 = Me) to 3-carboxy-2-pyrrolone 21 succeeds in the presence of aqueous methanolic KOH at 60°C. Subsequent HC1 work-up at 0°C furnishes 21 with 82% yield (86UP1). (See Fig. 11.)... [Pg.151]

See other pages where Carboxy ester hydrolysis reactivity is mentioned: [Pg.232]    [Pg.240]    [Pg.289]    [Pg.137]    [Pg.162]    [Pg.438]    [Pg.175]    [Pg.1215]    [Pg.225]   


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