Answer in Organic Chemistry for Arslan #220663
In a grignard reaction,alkyl or alyl magnesium halide is alcohol to a carbonyl group in an aldihyde or ketone .
this reaction helps in the formation of carbon carbon bond .
Therefore when phenyl magnesium bromide reacts with dimethyl carbo nate ,then following reaction takes place.
Major organic products are- (a) propan-1-ol and (b) 2-methylpropan-2-ol
methyl magnesium bromide gives nucleophilic addition reaction with carbonyl group. Because methyl magnesium bromide is a strong nucleophile and carbonyl group is a strong electrophilic center.
Propanal contains an aldehyde group and propanone contains a ketone group. hence they both give nucleophilic addition with methyl magnesium bromide.
Dilute acid is added to protonate the alkoxide produced during nucleophilic addition.
Reactions are shown below.