IUPAC name of CH3CHO is
CH3CHO is ethanal
Arrange the following sets of compounds in order of their increasing boiling points : Pentan – 1 – ol, butan – 1 – ol, butan – 2 – ol, ethanol, propan – 1 – ol, methanol
Boiling point is α Vanderwall forces α Molecular weight.
One mole of a symmetrical alkane on ozonolysis gives two moles of an aldehyde having molecular mass of 44u. The alkene is.
2-butene on reductive ozonolysis will give CH3CHO which has molecular mass of 44u.
IUPAC name of the following compound is
This is 1-methoxy-1-methylethane.
Which sequence of steps below describes the best synthesis of 5 – oxohexanoic acid starting with 1 – methylcyclopentan – 1 – ol?
5 – oxohexanoic acid starting with 1 – methylcyclopentan – 1 – ol can be synthesized using conc H2SO4 which will cause dehydration forming alkene which with KMnO4 opens the ring and forms 1 – methylcyclopentan – 1 – ol.
The compound which forms acetaldehyde when heated with dilute NaOH is
Ketones are reduced to the corresponding alcohols by catalytic hydrogenation to form
Ketones reduction give secondary alcohols.
For making distinction between 2 – pentanone and 3 – pentanone the reagent to be employed is
2-pentanone will give iodoform but 3-pentanone will not give.
The following compound is called?
This is 4 – nitrobenzenecarbaldehyde and 4 – nitrobenzaldehyde
One of the following is used for the separation and purification of aldehydes
NaHSO3 is used for purification of aldehydes.
CH3CH(OCH3)CHO is called?
This is Methoxypropionaldehyde or 2 – Methoxypropanal
The aldehydes and ketones undergo one of the following reactions.
Aldehydes and Ketones undergoes nucleophilic addition reaction .
Reduction of aldehydes and ketones into hydrocarbons using zinc amalgam and conc. HCl is called?
Clemmenson is the reaction of carbonyl compounds with Zn amalgam in presence of conc. HCl to convert them to alkanes.
The product formed in Aldol condensation is
In aldol we get beta hydroxyl aldehyde/Ketone.
The carbonyl carbon atom
R1R2C=O is carbonyl so 3 sigma bond and 1 pie bond.
The following reaction is
This is Friedal Craft reaction.
Prop – 2 – enal is called?
this is Acrolein.
A mixture of benzaldehyde and formaldehyde on heating with aqueous NaOH solution gives
They will undergo cannizaro reaction.
Ozonolysis of alkenes followed by reaction with zinc dust and water gives depending on the substitution pattern of the alkene
Reductive ozonolysis yields aldehyde or ketone.
Which of the following has most acidic hydrogen?
2, 4-hexanedione will have active metylene group.
Esters react with DIBAL – H to produce
Esters are reduced to aldehydes with DIBAL-H.
Clemmensen reduction of a ketone is carried out in the presence of which of the following?
For Clemmenson we use Zn-Hg(conc HCl )
The correct sequence of steps involved in the mechanism of Cannizzaro's reaction is
In cannizaro reaction 1st nucleophile OH− attacks on carbonyl carbon. Then hydride shifting take place. Followed by proton transfer.
Aldehydes are prepared by reducing nitriles to corresponding imines with stannous chloride in the presence of hydrochloric acid. This reaction is called?
Reaction for preparation of aldehydes by reducing RCN is stephens Reaction.
Benzene gets converted to benzaldehyde by Gatterman – Koch reaction. The appropriate reagent for the conversion is