Preparation process of 2,2,4-trimethyl-1,3-pentanediol mono-sio butyrate

A process for preparing 2,2,4-trimethyl-1,3-pentadiol monoisobutyrate includes such steps as condensation reaction of isobutyraldehyde at 10-60 deg.c under action of catalyst, dirct heating to 60-150deg.c, further reaction, recovering the unreacted isobutyraldehyde, and vacuum rectifying. The said catalyst is chosen from alkali or alkali-earth metal hydroxide, alkali-earth metal oxide, alkali oralkali-earth metal salt, organotion and stannous oxide. Its advantages are high purity (98%) and less generation of by-product.