Glucose→H2O/H+HCN/OH- A→HI+rep P/∆B; The compound ‘B’ in the process is
n-hexane
n-heptane
n-hexanoic acid
n-heptanoic acid
Glucose→HCN HOH2C-CHOH4-CHOH-CN→H2O/H+ A ; A is HOH2C-CHOH4-CHOH-COOH ; A →HI+red P/∆ H3C-CH24-CH2-CH3