Table 8: Effect of catalyst amount on the catalytic activity of benzyl alcohol oxidation using Cr(III) complexes at optimum conditions.


Catalyst Catalyst (mmol) Yield (%)a Conversion (%) Selectivity (%)
BAb BZc Side products R

CrLA1 0.02 93 7 93 100
0.05 65 32 3 97 67
0.10 45 35 20 100 45
CrLA2 0.02 85 85 100
0.05 51 37 12 88 67
0.10 41 33 19 7 93 47
CrLA3 0.02 75 25 75 100
0.05 48 21 2 21 79 61
0.10 37 28 20 15 85 44

aThe oxidation of benzyl alcohol (BZ) (1.0 mmol) catalyzed by Cr(III) complexex with aqueous H2O2 (3.00 mL) in 10 mL acetonitrile for 4 h at 80 °C.
bThe yield based on GC results, selectivity percentage of the target oxide product BA.
cThe other side products are mainly of BZ.