Catalytic oxidation of alcohols

Exercise 1

An alcohol $A$ with molecular formula $C_5H_ {12}O$ is subjected to catalytic oxidation with oxygen. We obtain an optically active carboxylic acid. 1) Give the semi-structural formula of $A$ 2) Write the equations of its progressive catalytic oxidation by oxygen

1) $CH_3CH_2C^*H(CH_3)CH_2OH$ 2-methylbutan-1-ol 2) $CH_3CH_2C^*H(CH_3)CH_2OH$ $ +$ $\frac{1}{2}O_2$ $\rightarrow$ $CH_3CH_2C^*H(CH_3)CHO$ $+$ $H_2O$ Product: 2-Methylbutanal $CH_3CH_2C^*H(CH_3)CHO$ $+$ $\frac{1}{2}O_2$ $\rightarrow$ $CH_3CH_2C^*H(CH_3)COOH$ Product: 2-Methylbutanoic acid