Question

Question #e302f

Answer 1

As discussed below

Explanation:

Here in the Fischer's projection formula H atoms linked with both `C_2 andC_3` chiral carbon atoms are kept in horizontal lines and following CIP rule on both `C_2 andC_3` chiral carbon atoms the rotations in going along descending order of priority excluding H atom of least priority are in anticlockwise direction . So both `C_2 and C_3` chiral carbon atoms will be marked as R.

For `C_2 "The order" ->-OH>C_2H_5(CH_3)CH-.>CH_3-`

For `C_3 "The order" ->CH_3CHOH-.>C_2H_5-.>CH_3-`