Catalytic Potential of Mononuclear Cr(III)-Imine Complexes for Selective Oxidation of Benzyl Alcohol by Aqueous H<sub>2</sub>O<sub>2</sub>: Table 6

Table 6: Oxidation of benzyl alcohol catalyzed by CrLA3 using an aqueous H₂O₂ in acetonitrile.


Entry^a	Temp (°C)	Time (h)	Yield (%)^b				Conversion (%)	Selectivity (%)	TON^d	TOF^e
			BA^b	BZ^c	Side products	R^a

1	60	1	19	—	—	81	19	100	9.5	9.5
2		2	23	—	—	77	23	100	11.5	5.75
3		4	29	—	—	71	29	100	14.5	3.63
4		6	18	12	—	70	30	60	9	1.5
5	70	1	35	—	—	65	35	100	17.5	17.5
6		2	40	—	—	60	40	100	20	10
7		4	43	2	—	55	45	96	21.5	5.83
8		6	39	7	—	54	46	85	19.5	3.25
9	80	1	46	—	—	54	46	100	23	23
10		2	63	—	—	37	63	100	31.5	15.75
11		4	74	—	—	36	74	100	37	9.25
12		6	60	9	—	31	81	87	30	5
13	90	1	37	19	—	44	56	66	18.5	18.5
14		2	30	22	6	42	58	52	15	7.5
15		4	23	25	14	38	62	37	11.5	2.88
16		6	18	30	16	36	64	28	9	1.5
17	100	1	26	28	5	41	59	44	13	13
18		2	19	37	12	32	68	28	9.5	4.75
19		4	14	48	16	22	78	18	7	1.75
20		6	10	53	19	18	82	12	5	0.83

^aThe oxidation of benzyl alcohol (R) (1.0 mmol) catalyzed by complex CrLA3 (0.02 mmol) with aqueous H₂O₂ (3.00 mL) in 10 mL acetonitrile for 1–6 h. ^bThe yield based on GC results, selectivity percentage of the target oxide product BA and the other product BZ. ^cThe other side products are mainly of BZ. ^dTON (turnover number) = ratio of moles of product (here oxide) obtained to the moles of catalyst. ^eThe corresponding TOF (turnover frequency) (TON/h) are shown in parentheses (mol (mol catalyst)⁻¹ h⁻¹).