Another route involves hydroxymethylation of diethanolamine followed by hydrogenolysis. It has shown to be valuable for hydrogenation, hydrogenolysis, dehydrogenation, and oxidation reactions. After deprotection by hydrogenolysis, agaritine was extracted by chromatography. It is produced by partial hydrogenolysis of hexamethylene diamine. It is a catalyst for hydrogenation and hydrogenolysis in organic synthesis. Palladium on carbon is a common catalyst for hydrogenolysis. The silyl ether on hydrogenolysis followed by Collins oxidation gave the aldehyde. Thus, hydrodesulfurization is a hydrogenolysis reaction. Nanoparticle catalysts are active for the hydrogenolysis of C-Cl bonds such as polychlorinated biphenyls. Hydrodeoxygenated biodiesel is produced by direct hydrogenolysis of the fat into alkanes and propane. The benzyl ester protecting groups were then cleaved by final hydrogenolysis. It can also be prepared by hydrogenolysis of tetrahydrofurfuryl alcohol. A diol is obtained by Pd/C-catalyzed hydrogenolysis. Triphenylphosphineis subject to hydrogenolysis, releasing benzene and diphenylphosphine. Some hydrogenations of polar bonds are accompanied by hydrogenolysis.