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Chapter 10 373
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43.
The strong base immediately removes a proton from the protonated amine, and then there is no base to
carry out the elimination reaction.
44.
The major products result from removing a proton from the
b
-carbon that is bonded to the most hydrogens.
CH
3
CHCH
2
N
CH
3
CH
3
CH
3
+ CH
2
CHCH
3
45.
The minor products result from removing a proton from the
b
-carbon that is bonded to the fewest
hydrogens.
CH
3
C CH
2
CH
3
+ NCH
2
CH
2
CH
3
CH
3
CH
3
46.
The only difference is the leaving group.
−
−
+
47.
In each case, a proton is removed from the
b
-carbon that is bonded to the most hydrogens.
a.
c.
b.
+
48.
Solved in the text.