Tischenko reaction is a modification of :
Aldol condensation
Claisen condensation
Cannizzaro reaction
Pinacol-pinacolon reaction
Tishchenko reaction -
In the presence of aluminium ethoxide, aldehydes form esters.
Cannizzaro's reaction -
Shown by aldehydes which do not have - H atom and undergo disproportion (self-oxidation reduction) process to produce alcohol and carboxylic acid salt.
Both are disproportionation reactions (one species undergo both oxidation and reduction)