Chemistry Reference
In-Depth Information
in a color change from the purple of KMnO
4
to the brown solid MnO
2
(Sec. 3.17a).
Cyclohexane, being saturated, does not react with either of these reagents.
3.56
The alkene that gave the particular aldehyde or ketone can be deduced by joining
the two carbons attached to oxygens by a C=C double bond:
a.
(CH
3
)
2
C=CH
2
b.
(CH
3
CH
2
)
2
C=C(CH
2
CH
3
)
2
c.
CH
3
CH=CHCH
2
CH
3
d.
cyclopentene
In the case of compound a, where
cis
and
trans
are possible, either isomer gives the
same ozonolysis products.
3.57
Each radical adds to a molecule of propene to give the more stable radical
(secondary rather than primary):
RO
+HC
CH
RO
CH
2
CH
2
CH
3
CH
3
RO
CH
2
CH
+
HC
CH
RO CH
2
CH
CH
2
CH
2
CH
3
CH
3
CH
3
CH
3
and so on
(
)
CH
2
CH
polypropylene
n
CH
3
3.58
a.
This catalyst limits the addition to 1 mole of H
2
, which adds to the same face
of the double bond.
b.
c.
Compare with eq. 3.53, where R = CH
3
CH
2
CH
2
CH
2
.
d.
OH
O
H
+
Hg
2+
C HC HC
CH
+H
2
C HC HC
C H
C HC HCCH
3
Compare with eq. 3.52, where R = CH
3
CH
2
.
a.
3.59
Cl
2 HCl
2 HCl
C HC HC
CH
C HC
2
HC
Cl
C H
C HC
C
C H
Either 1- or 2-butyne will add HCl to give the same product.
