Organic Chemistry Answers

.How can you prepare 1,3,5-tribromobenzene? Why it cannot be prepared by bromination of benzene?

14.Explain the nitrosation reaction of secondary and tertiary amines giving suitable reactions.

Write the reaction of formation of maltose from its monomers giving appropriate structures with proper labeling.

19.(a) Explain the formation of methyl glycoside of alpha - and beta - D-glucose.Also give their structures.

(b) Draw the enantiomers of N -methylethanamine.

b) Discuss the role of activating, deactivating and protecting groups briefly in organic synthesis.

Give the classification of dyes based on their chemical structures. Give one example for each case.

Draw the Jabslonski diagram showing excitation and deactivation routes.

With suitable examples explain [2+2] and [4+2] cycloaddition reactions.

What are the motivating factors for the Wagner-Meerwein rearrangement? Discuss its mechanism with a suitable example.