1.
The reaction

CH3C(=O)OC2H5+n-C3H7OHn-C3H7ONaC2H5OH+CH3COOC3H7(n)CH_3\text{—}C(=O)\text{—}OC_2H_5 + n\text{-}C_3H_7OH \xrightarrow{n\text{-}C_3H_7ONa} C_2H_5OH + CH_3COOC_3H_7(n)


is known as: