IN-SITU P-31 NMR-STUDY ON THE REACTIONS O F LINEAR OLEFINS WITH PHOSPHINE

Under the following reaction conditions: temperature 50-70-degrees-C, pressure 1.0-2.0 MPa, solvent C6D6, initiator AIBN, the reactions of 1 , 4-pentadiene, 1, 7-octadiene and 1-decaoctene with PH3 were studied by using the pressurized in-situ NMR technique. Experimental results i ndicated that the six-membered phosphorinane is formed by the addition of PH3 to 1, 4-pentadiene, phosphonane can't be obtained by 1, 7-octa diene, and primary phosphine is the predominant product in the reactio n of PH3 with 1-decaoctene. The results obtained by in-situ (PNMR)-P-3 1 spectra also indicated that the reactions of PH3 with linear olefins proceed with a sequential mechanism.