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• Synthesis

  Add 4.0 grams of dichlorotris(triphenylphosphine) ruthenium to the 250mL branch-necked bottle, feed nitrogen to replace the air in the branch-necked bottle, and inject 40mL into the branch-necked bottle through three times of liquid nitrogen freezing. Re-thaw the treated dichloromethane; place the side-necked flask in a cold bath at -78°C, and add a pentane solution of phenyldiazomethane with a mass concentration of -50°C of 98.5 mg/mL under stirring conditions 10 mL was mixed, and the phenyldiazomethane in the pentane solution of phenyldiazomethane was the phenyldiazomethane prepared above; the obtained mixture was stirred at -70 °C for 10 min, and then added 40 mL, -50 °C The mass concentration of 0.064 g/mL tricyclohexylphosphine in dichloromethane solution was carried out at 25 °C for 30 min. After the reaction, the obtained reaction solution was filtered to remove insolubles, the filtered reaction solution was concentrated to 10 mL and then filtered again, and 100 mL of methanol that had undergone three liquid nitrogen freeze-thaw treatments was added to the obtained filtered product for precipitation. , the obtained precipitate was first washed three times with methanol and then twice with acetone, and the washed precipitate was vacuum-dried for 3 hours to obtain 2.1 g of Benzylidene-bis(tricyclohexylphosphine)dichlororuthenium.;

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