Chemistry Reference
In-Depth Information
Tab l e 9 . 3
Yield (%)
Substrate
Product
EtO
2
C
EtO
2
C
91.5
O
EtO
2
C
EtO
2
C
Me
EtO
2
C
Me
EtO
2
C
94
O
EtO
2
C
EtO
2
C
O
+
Ph
86
Ph
O
+
56
O
OH
52.5
+
OH
the observed yields were poor and the scope of the alkyne substrate was too narrow to be
used in practical synthesis.
O
ZS20c
+
R
30 bar CO
48 h, 130
R
°
C
toluene
R
Yield (%)
Ph
n-C
6
H
13
20
12
Scheme 9.4
9.2.5 Mesoporous Graphitic Carbon as a Promoter
22
Antonietti et al.
22
studied the use of mesoporous graphitic carbon nitride (
mpg-C
3
N
4
)
(Figure 9.1) as a new class of heterogeneous metal-free catalysts for the activation of
