Chemistry Reference
In-Depth Information
O
O
+
CH
2
N
2
O
O
CHN
2
Cl
Cl
Cl
O
O
N
2
rearrangement reactions are attempted on poly(acryloyl chloride) [
248
],
the products are fairly regular polyampholytes:
When
Curtius
and
Lossen
Somewhat similar results are obtained with a
Hoffman reaction
on polyacrylamide [
279
]. A
Schmidt
reaction
on poly(acrylic acid) also yields mixed results [
250
]. When it is run in acetic acid, the
intermolecular reactions appear to predominate over the intramolecular ones. Also, the products formed
in acetic acid have higher nitrogen content that those formed in dioxane [
250
]. The NMR spectra show
presence of some acid anhydride groups. This has an additional effect of lowering the yield.
Diels-Alder reactions
can be carried out on poly(furfuryl methacrylate) with dienophiles like
maleic anhydride or a maleimide [
252
]. Dilute solutions (10%) of the polymers in benzene can be
used, requiring up to 30% molar excess of the dienophiles:
O
O
O
O
O
+
O
O
O
O
