Chemistry Reference
In-Depth Information
New fuchsin was diazotized via a Sandmeyer reaction (NaNO
2
,H
2
SO
4
; KI) giving
the tris(4-iodo-3-methylphenyl)methanol, which in the presence of phenol and
concentrated sulfuric acid afforded the tris(4
0
-iodo-3
0
-phenyl)-4-methylphenol [100].
Utilizing the Sonogashira coupling [101], this triiodo intermediate was treated
with
tris(4
0
-phenylethynyl-3
0
-methylphenyl)-4-
phenylacetylene
to
generate
methylphenol.
3.3 1 ! 3 SI-BRANCHED MONOMERS
