pyrimidine and purine

pyrimidine is

• sp2 hybridized

• planar

• aromatic

• all

pyrimidine is synthesised from

• 1 3 dicarbonyl compound

• alpha beta unsaturated ketone

• a and b

• none

4 methyl pyrimidine undergo oxidation and form

• pyrimidine

• pyrrole

• purine

• all

pyrimidine undergo

• nitration

• sulfonation

• halogenation

• acetylation

pyrimidine is present in

• flucytosine

• sulfadiazine

• trimethoprim

• all

vitamin B1 contains

• purine

• pyrimidine

• imidazole

• all

traube synthesis is used for synthesis of

• purine

• pyrimidine

• indole

• imidazole

formamide react with pocl3 and form

• 9H purine 2 amine

• pyrimidine

• 8H purine

• 9H pyrimidine

electrophilic substitution occur at

• 8

• 9

• 6

• 5

xanthine undergo

• nitration

• chlorination

• bromimation

• all