“…Co, Ni, and Ru tend to be selective for primary amines, 15,16,18,[20][21][22][23][24][25][26][27][28][29][30][31][32][33][34][35][36][37][38] whereas Cu and Rh are selective for secondary amines, 15,22 and Pd and Pt are selective for tertiary amines. 11 These catalysts have also been used for the secondary and tertiary amine synthesis by the N-alkylation of ammonia and related compounds with alcohol on a [Ru(pcymene)Cl 2 ] 2 and dppf (=1,1 0 -bis(diphenylphosphino)ferrocene) ligand system, 41 and Ru(OH) x supported oxide catalysts; [42][43][44] the synthesis of amides on RuCl 2 (Z 6 -C 6 Me 6 ){P(NMe 2 ) 3 }, 45 cis-Ru(acac) 2 (PPh 2 py) 2 , (acac = acetylacetonato, PPh 2 py = diphenyl-2-pyridylphosphine), 46 and Ru(OH) x /Al 2 O 3 ; 47 the synthesis of nitriles on RuH 2 (PPh 3 ) 4 , 48 RuH(bmpi)(PPh 3 ) 2 (bmpi = 1,3-bis(6 0methyl-2 0 -pyridylimino)isoindoline), 49 Ru/Al 2 O 3 , 50 and Ru(OH) x supported oxide catalysts; 51-55 the synthesis of aldimines 56 and the aerobic oxidation of alcohol on Ru(OH) x supported oxide catalysts; 54,55,57,58 and the synthesis of alcohol on Ru(OH) x supported oxide catalysts. 33 Segobia et al reported that transition metals (Ni, Co, Ru, Cu, Pd, and Pt) supported on silica ...…”