Chemistry Reference
In-Depth Information
Ph
Ph
Ph
Ph
Ph
Ph
Ph
Ph
Ph
Ph
Ph
Ph
Ph
Ph
106
O
O
1,2-dichloroethane
reflux
Ph
Ph
Ph
Ph
Ph
Ph
Ph
Ph
Ph
Ph
105
107
100c
, 62%
Scheme 23
Synthesis of octaphenylnaphthalene [
13
]
Ph
Ph
Ph
Ph
Ph
Ph
Ph
Ph
Ph
Ph
Ph
Ph
106
1,2-dichloroethane
reflux
O
O
Ph
Ph
Ph
Ph
Ph
Ph
Ph
Ph
108
109
, 8%
Ph
Ph
Ph
Ph
Ph
Zn/HOAc
reflux
Ph
Ph
Ph
Ph
Ph
5
, 3%
Scheme 24
Synthesis of decaphenylanthracene [
13
]
X
Ph
Ph
Ph
Ph
Ph
Ph
Ph
Ph
112
Ph
Ph
111
110a
:X=H
110b
:X=Cl
110c
:X=CF
3
X
Fig. 31
Structures of highly substituted anthracenes [
94
-
96
]
Benzannulated anthracenes
110a
,
110b
, and
110c
(Fig.
31
) are highly twisted
with end-to-end twists of 66
,61
, and 70
, respectively [
94
,
95
]. Similarly,
crowded anthracenes
111
and
112
show twists of 60
and 57
, respectively [
96
].
