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Questions tagged [carbonyl-compounds]

For questions about compounds containing the carbonyl group, C=O, the carboxylic acid group (-COOH), or its derivatives (anhydrides/esters/amides/acid halides). For questions about complexes involving carbon monoxide as a ligand use [carbonyl-complexes] instead.

As defined in the first entry of the definition in the IUPAC Gold Book:

Compounds containing the carbonyl group, C=O. The term is commonly used in the restricted sense of aldehydes and ketones, although it actually includes carboxylic acids and derivatives.

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Cannizarro reaction of chloral

When chloral undergoes reaction with a concentrated alkali, will it undergo Cannizarro reaction to form the corresponding alcohol and acidic salt, or should it form chloroform instead by departure of trichloro carbanion instead of the hydride ion?…
Saurabh Raje
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What's the factor governing the order of wavenumbers of CO in metal carbonyls?

As a higher wavenumber means a lower wavelength, which in turn means higher energy, the complex with the most effective backbonding would have the least wavenumber. The backbonding, as I know, is proportional to the number of electrons in the…
lazearoundallday
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What is the reason for colour in 2,4-Dinitrophenylhydrazine derivatives?

2,4-Dinitrophenylhydrazine is an important laboratory reagent for the detection of Carbonyl (C=O) group. It reacts with Carbonyl group by the typical Nucleophilic Addition-Elimination reaction and if positive the test results in the formation of…
Serotonin
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IR Stretching in Hexacarbonyl Iron

With reference to this graph, my professor stated the following: "Since the IR band for the bridging carbonyls is single, it implies that the bridging carbonyls are oriented linearly. Since we have two bands for the terminal bonds, they are not…
lazearoundallday
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Comparison between hot conc. KMnO4 and cold KMnO4

Recently while solving carbonyl compounds I came across this. What all can cold KMnO4 do? Can it oxidize aldehydes too, along with oxidizing alkene to vicinal diols? (I need a thorough comparison in hot conc. and cold`s properties.) (hot conc…
shreya
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How does higher carbonyl compounds disolve in water?

We know that higher the carbon, the more is hydrophobic the compound nature is, Still when we take a compound like sugar , a hand of sugar, it readily dissolves in water? can someone explain me reg this
Anirudh
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Sources of carbon monoxide in dwellings

I am doing some research on indoor environmental quality and come across a number of spikes in CO in a dwelling. This is a dwelling in central London with no gas-fired equipment: electric cooker and heating from a centralised district heating…
Cairan Van Rooyen
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Is the cannizaro reaction possible for a molecule having hydrogens attached to sp2 hybridised carbons?

As known benzaldehyde can undergo a cannizaro reaction in which a phenyl group is an electron donating group, so the reaction similar to below (of prop-2-enal) (cannizaro) should occur for similar molecule 'either having all hydrogen connected to…
Jay
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Why does the electron withdrawing group increase acidic nature of carboxylic acids?

The doubt in my mind is that the electron withdrawing group is attached to the carbon atom of the carbonyl group and that carbon doesn't have any negative charge..the negative charge lies on oxygen atom so how does this electron withdrawing group…
Jiya
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Selective carbonyl protection using ethylene glycol

Can anyone explain to me which position is more favourable to form ketal i.e aldehyde or ketone Also which reducing agent also reduce this ketal. And how thioketal formed from thioethyleneglycol different from ketal
Private5661
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Why is Benzaldehyde more reactive than propanone in nucleophilic addition, even though it has resonance?

I am not 100% sure that this is true but this was given in the JEE Main 2020 (03 Sep Shift 2). Benzaldehyde has resonance and propanone has just +I effect why is then benzaldehyde more reactive in nucleophilic addition?
SAM4RTH
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