Question

How to
Converted Ethanol to Lactic acid

Answer 1

CH3-CH2-OH + PI3 ------> CH3-CH2-I (ethyl iodide) 

CH3-CH2-I + KCN ------> CH3-CH2-CN (propionitrile) 

CH3-CH2-CN + H(+)/H2O -------> CH3-CH2-COOH (propanoic acid ) 

CH3-CH2-COOH + Br2 + Red phosphorous --------> CH3-CH(Br)-COOH (2-bromopropanoic acid) (this reaction is known as Hell-Volhard-Zelinsky reaction) 

CH3-CH(Br)-COOH + NaOH (aq) --------> CH3-CH(OH)-COOH (2-hydroxypropanoic acid or lactic acid) 

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