8 Answered Questions for the topic carbonyl compounds

07/17/19

Which compound reacts faster in the Cannizzaro Reaction?
> Which reacts faster in the Cannizzaro Reaction? >a) $\\ce{OHC-C6H4-NO2}$ b) $\\ce{OHC-C6H4-OCH3}$ Obviously, a better hydride releasing group will react faster. Therefore my answer was... more
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Carbonyl Compounds Organic Chemistry Acid Base Phenols

07/16/19

Why is acetic acid more acidic than phenol?
Acetic acid (ethanoic acid, $\\mathrm pK_\\mathrm a \\approx 5$) is more acidic than phenol ($\\mathrm pK_\\mathrm a \\approx 10$), which is reflected in their reactivity with a weak base such as... more
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07/09/19

Why does the carbonyl group in an acid anhydride have two stretching frequencies?
The carbonyl stretching frequencies for an acid anhydride are approximately $1820~\\mathrm{cm^{-1}}$ and $1760~\\mathrm{cm^{-1}}$. These are both higher frequencies than a simple ketone owing to... more
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07/05/19

Why do BH3 and NaBH4 have different selectivities?
I've always known borane ($\\ce{BH3}$), as a reagent for alkene hydroboration. Recently in class we talked about its use in the reduction of carboxylic acids to alcohols as well. Now obviously... more
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Carbonyl Compounds Organic Chemistry Reactivity

07/02/19

Why is a ketone more nucleophilic than an ester?
I guess the ester is a weaker nucleophile because it does have an additional oxygen atom, unlike the ketone, that is pulling electrons from the C-O double bond towards the carbon atom (this happens... more
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Carbonyl Compounds Organic Chemistry Boiling Point

04/04/19

Reactions of alcohol with sulfuric acid?
I knew two chemical reactions of alcohol with sulfuric acid 1. CH3CH2OH + H2SO4 -> CH2CH2 Here product is having a double bond (ethene) and this reaction happens at 443 K temperature. 2.... more
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03/27/19

Do L-sugars (enantiomers of natural sugars) have a sweet taste?
I'm wondering about how L-sugars taste. They are obviously not digestible by humans, but what do they taste like? If they are sweet, too, why isn't sucrose with the unnatural chirality used as a... more
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03/15/19

In the Favorskii rearrangement, why doesn't the base grab the alpha hydrogen of the carbon bearing the halogen?
In the Favorskii rearrangement, the base (like hydroxide) always abstracts the alpha hydrogen of the carbon not bearing the halogen. But to me the hydrogens on the carbon directly connected to the... more
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