Ruthenatetraboranes: synthesis of [Ru(B3H8)(PPh3)}HB(pz)3}] and crystal structure of [RuCl(PPh3)2{HB(pz)3}] (pz = pyrazol-1-yl)

Aromatic C−H Activation and Catalytic Hydrophenylation of Ethylene by TpRu{P(OCH2)3CEt}(NCMe)Ph

“…TpRu{P(OC-H 2 ) 3 CEt}(NCMe)Ph (4) was synthesized in four steps from the known complex TpRu(PPh 3 ) 2 Cl (Scheme 2). 38 Refluxing TpRu(PPh 3 ) 2 Cl in benzene with a slight excess of P(OCH 2 ) 3 CEt for 3 h gives TpRu{P(OCH 2 ) 3 CEt}(PPh 3 )Cl (1) in 93% isolated yield. The 31 P NMR spectrum of complex 1 reveals two doublets (130.6 and 46.0 ppm) with 2 J PP ) 57 Hz.…”

Ruthenium‐Catalyzed β‐Alkylation of Secondary Alcohols with Primary Alcohols

“…We have been able to present a clearer picture of the mechanistic aspects of the reaction, and more interestingly, we have demonstrated that the carbonyl complexes resulting from aldehyde decarbonylation, which is usually regarded as the cause of catalyst deactivation, are also active for the alkylation reactions. [14] CpRu-A C H T U N G T R E N N U N G (PPh 3 ) 2 Cl (M2), [15] CpRuA C H T U N G T R E N N U N G (dppm)Cl (M3), [16] TpRuA C H T U N G T R E N N U N G (PPh 3 ) 2 Cl (M4), [17] [18] cis-[Ru(6,6'- [19] and TpRuA C H T U N G T R E N N U N G (PPh 3 )(CO)Ph (M8) [10] were prepared according to literature methods.…”

Diazoalkane complexes of ruthenium with tris(pyrazolyl)borate and bis(pyrazolyl)acetate ligands

“…15,26,29 RuCl(bpza)(PPh 3 )[P(OMe) 3 ]. A slight excess of trimethylphosphite (0.52 mmol, 62 µL) was added to a solution of RuCl(bpza)(PPh 3 ) 2 (0.40 g, 0.44 mmol) in benzene (25 mL) and the reaction mixture was refluxed for 1 h. The solvent was removed under reduced pressure to give an oil, which was triturated with diethylether (5 mL).…”