'A' + CH3MgBr in the presence of H2O gives CH3--CH2--CH(OH)--CH3 which in the presence of H2SO4 gives 'B' which in the presence of Br2 gived 'C' which in the presence of alcoholic KOH gives 'D'.
identify A, B , C D
Aldehydes and ketone form alcohols with Grignard reagent. As a secondary alcohol is formed with a 3-carbon chain, A is propanal.
2-butanol is a secondary alcohol and on dehydration with sulphuric acid will form butene. The major product is B, trans-2-butene which forms addition product with bromine, 2,3-dibromo butane(C). This forms 2-bromo but-2-ene (D) on reaction with alcoholic KOH.
2-butanol is a secondary alcohol and on dehydration with sulphuric acid will form butene. The major product is B, trans-2-butene which forms addition product with bromine, 2,3-dibromo butane(C). This forms 2-bromo but-2-ene (D) on reaction with alcoholic KOH.