Noun
A colorless, mobile, and very volatile liquid obtained from alcohol by certain processes of oxidation.
Source: Webster's dictionaryAcetals are stable, but revert to the aldehyde in the presence of acid. Source: Internet
Characterization An aldehyde differs from a ketone because of its hydrogen atom attached to its carbonyl group, making aldehydes easier to oxidize. Source: Internet
DIBAH reduces esters to aldehydes. citation Direct reduction to give the corresponding ether is difficult as the intermediate hemiacetal tends to decompose to give an alcohol and an aldehyde (which is rapidly reduced to give a second alcohol). Source: Internet
Conversely, members of certain ethnicities that traditionally did not use alcoholic beverages have lower levels of alcohol dehydrogenases and thus "sober up" very slowly, but reach lower aldehyde concentrations and have milder hangovers. Source: Internet
In these closed-chain forms, the aldehyde or ketone group remains non-free, so many of the reactions typical of these groups cannot occur. Source: Internet
If the presence of another functional group demands the use of a suffix, the aldehyde group is named with the prefix formyl-. Source: Internet