`2-`Bromo`-3-`phenylpropane can be synthesised by

1-bromo-3-methoxypropane

5-bromo-3-hexanol

1-bromo-2,2-dimetylpropane

3, 5 - Dibromotoluene can be best synthesised by

A Grignard reagent (A) and a haloalkene (B) react together to give (C) . Compound (C) on heating with KOH yeilds a mixture of two geometrical isomers (D) and € of which (D) predominates . Compound (C) on reaction with HBr in presence of a peroxide gives 1-bromo-3- phenylpropane. Give the structures of (A), (B) and (C) and configurations of (D) and (E).

Which one of the following vitamins can be synthesised by humans ?

Which one of the following vitamins can be synthesised by humans ?

3-bromo-1-propene