Chemistry Reference
In-Depth Information
3.7
From Metal Hydrides
The elimination of H
2
by addition of phenolic reagents to metal hydrides is an excellent
method for the synthesis of alkali metal aryloxide compounds (Eqs 6.54,
150
6.55,
151
and 6.56
152
).
CH
3
CH
3
Me
3
C
CMe
3
O
THF
2LiH
2
Η
2
+
O
Li
Li
O
+
(6.54)
O
Me
3
C
CMe
3
Me
3
C
CMe
3
OH
CH
3
CF
3
CF
3
F
3
C
CF
3
O
THF
THF
THF
THF
2NaH
+
2
Na
Na
+
Η
2
(6.55)
THF
O
F
3
C
CF
3
F
3
C
CF
3
OH
CF
3
O
O
O
Na
N
OH
HO
O
Na
N
dme
4NaH
+
2
(6.56)
N
N
O
Na
Na
O
N
N
The method can also be applied to the synthesis of transition metal aryloxides, with
mixed hydrido, aryloxides sometimes being observed and isolated
153
(Eqs 6.57
154
and
6.58
155
).
[MoH
4
PMe
2
Ph
4
] C 4HOAr ! [Mo
OAr
4
PMe
2
Ph
2
] C 4H
2
C 2PMe
2
Ph
6
.
57
