Preparing Aldehydes and Ketones Preparing Aldehydes Aldehydes from reduction of carboxylic esters using diisobutylaluminum hydride(DIBAH) 9 CH3(CH2)10COCH3 1.DIBAH,toluene,-78C O= 2.H30t CH3(CH2)10CH Methyl dodecanoate Dodecanal (88%) H where DIBAH CH3CHCH2-Al-CH2CHCH3 CH3 CH3 Preparing Aldehydes Aldehydes from reduction of carboxylic esters using diisobutylaluminum hydride (DIBAH) Preparing Aldehydes and Ketones