Chemistry Reference
In-Depth Information
Table 10.3
Selected homogeneous catalyzed oxidation of benzyl alcohol to benzaldehyde in alternative solvents or solvent-free conditions.
Conversion (%)
(selectivity, %)
Catalyst
Oxidant
T (1C)
Time (h)
Solvent
Ref.
Cu(ClO
4
)
2
(5 mol%)
DMAP (10 mol%)
Acetamido-TEMPO (5 mol %)
O
2
25
5
[bmpy][PF
6
]
99 (499)
20
Cu(
II
) salt (1 mol%)
a
TEMPO (5 mol%)
K
2
CO
3
(33 mol%)
Air
50
48
H
2
O
99 (499)
40
CuBr (1 mol%)
Ligand (3 mol%)
Acetamido-TEMPO (2 mol%)
O
2
25
0.6
None
100 (495)
23
TMAH
b
Ru(PPh
3
)
3
Cl
2
(1 mol%)
O
2
80
5
91 (499)
21
PhenS*Pd(OAc)
2
c
(0.5 mol%)
NaOAc (10 mol%)
Air (30 bar)
100
10
H
2
O
100 (499)
18a
[Imim-TEMPO][FeCl
4
] (5 mol%)
NaNO
2
(5 mol%)
O
2
(0.2 MPa)
30
1.5
H
2
O
100 (499)
25
VO(acac)
2
(5 mol%)
DABCO (10 mol%)
O
2
80
6
[bmim][PF
6
]
99 (499)
41
a
Salt: tetramer [OCCu
4
(tea)
4
(BOH)
4
][BF
4
]
2
.
b
Tetramethylammonium hydroxide.
c
PhenS*
ΒΌ
bathophenanthroline disulfonate.
Search WWH ::
Custom Search