SCHOTTEN BAUMANN REACTION MECHANISM

Schotten Baumann reaction mechanism

Schotten Baumann reaction mechanism is a convenient method for benzoylation of phenols with benzoyl chloride in presence of cold aqueous sodium hydroxide. The aqueous alkali reacts with the  hydrogen halide produced .
Schotten Baumann reaction mechanism
  

Schotten Baumann reaction mechanism

Schotten Baumann reaction mechanism
Aromatic amines (both primary and secondary) can also be benzoylated under the conditions of Schotten Baumann reaction mechanism. Aniline forms benzanilide on treatment with benzoyl chloride in 10 % NaOH.

PREPARATION OF ALKENES: DEHYDRATION OF ALCOHOLS

In the dehydration of alcohols, the H and OH are lost from adjacent carbons. An acid catalyst is necessary
dehydration of alcohols
Before dehydrogenation of ethane became the dominant method, ethylene was prepared by heating ethyl alcohol with sulfuric acid.
dehydration of alcohols
Other alcohols behave similarly. Secondary alcohols undergo elimination at lower temperatures than primary alcohols,
dehydration of alcohols