How do you convert benzaldehyde to nitrostyrene?

Answer 1

benzaldehyde 10 mm in a conical flask to this add nitromethane 10 mm and 2 ml MeOH put on magnetic stirrer on ice bath to keep the temperature at 0C the add aqueous NaOH 10 mm in 1 or 2 ml D/Water dropwise a white bulky mass will form it is suggested to add 5 ml MeOH more the add ice cold water to the mixture 20 ml

transfer to burret and in another conical flask 250 ml take 50 ml D/Water add about 16 ml of Con. Hcl and titrate the mixture to acidic solution with continuous stirring as soon the stirring stops yellow crystals will be settled at the bottom vacuum filter wash with D/water until free from chlorine the dissolve in hot water cool it then recrystallize it in hot ethanol

Answer 2

Benzaldehyde can be converted to nitrostyrene by first forming a benzylidenemalononitrile intermediate from benzaldehyde using malononitrile and a base like potassium tert-butoxide. The benzylidenemalononitrile intermediate can then be reacted with a nitroalkane, such as nitromethane, in the presence of a catalyst like ammonium acetate to yield the nitrostyrene product.