Answer to Question #308797 in Organic Chemistry for Simon Peapo

Question

Show two ways from which you can use to prepare propiophenone

Answer 1

Propiophenone may be prepared in 70–80 per cent yields from benzene and propionyl chloride or propionic anhydride, in the presence of aluminum chloride.

2. For the preparation of small amounts of the isonitrosoketone it is more convenient to employ a higher-boiling alkyl nitrite, such as butyl nitrite (p. 108), which can be added directly to the reaction mixture by substituting a dropping funnel for the tube T₁. Butyl nitrite must be freshly prepared or redistilled shortly before use.