PREPARATION OF ALDEHYDES
by Snehal saju
1. OZONOLYSIS
1.1. CH2=CH2 + O3 -> 2H-CHO
2. DEHYDROGENATION OF ALCOHOL
2.1. CH3-CH2-OH + Cu/573K --> CH3-CHO + H2
3. ROSENMUND REACTION(Acyl Chloride)
3.1. R-CO-Cl + H2/Pd-BaSO4 --> R-CHO
4. STEPHEN'S REACTION(Nitriles and Ethers)
4.1. R-CN + SnCl2 + HCl --> R-CH=NH --> R-CH=O
4.2. R-CN + DIBAL-H --> R-CH-NH --> R-CHO
5. From HydroCarbons