1: tetra-n-propylammonium perruthenate; N-methyl morpholine oxide / CH2Cl2 / 1 h / 25 °C 2: 93 percent / (tris(1-pyrazolyl)borate)RuPPh3(CH3CN)2PF6 / toluene / 5 h / 100 °C View Scheme

T=260°C; P=20 Torr;