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9. Gas chromatography analysis of reaction mixture S45 10. Comparison with Reported Vanadium Catalysts at High Temperature S46 S 3 S1. General Information. Trimethylaluminum, modified methylaluminoxane-12 (MMAO-12) and methyl aluminum dichloride were purchased from commercial sources and used as is. Depleted MMAO 1 and dimethyl aluminum chloride 2 were prepared according to the literatures. Other commercial reagents were purified prior to use following the guidelines of Perrin and Armarego. 3 All solvents were purified according to the method of Grubbs. 4 Yields refer to pure compounds, unless otherwise indicated. All reactions were performed in an atmosphere of dry, oxygen-free dinitrogen using standard Schlenk techniques. 1 H NMR spectra were recorded on a JEOL (400 MHz) and are internally referenced relative to residual portion solvent signals (CDCl3) at = 7.26 ppm ( 1 H), 1,1,2,2tetrachloroethane-d2 at = 6 ppm, and C6D6 at 7.16 ppm. Data for 1 H NMR are reported as follows: chemical shift ( ppm), multiplicity (s = singlet, d = doublet, t = triplet, q = quartet, m = multiplet,), integration, and coupling constant (Hz). 13 C spectra were recorded on a JEOL (101 MHz) and

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Publisher

American Chemical Society (ACS)

Field

Chemistry (Physical Sciences)