9. When (1R,2R)-1-bromo-2-methylcyclohexane is heated with sodium methoxide in m
ID: 859240 • Letter: 9
Question
9.
When (1R,2R)-1-bromo-2-methylcyclohexane is heated with sodium methoxide in methanol, the major product is
A) (S)-4-methylcyclohexene.
B) 1-methylcyclohexene.
C) (R)-3-methylcyclohexene.
D) (R)-4-methylcyclohexene.
E) (S)-3-methylcyclohexene.
10.
When 3-bromo-3-methylpentane is heated with sodium methoxide in methanol, the major elimination product is
A) 4-methyl-1-pentene.
B) 2-ethyl-1-butene.
C) 2-methyl-1-pentene.
D) 4-methyl-2-pentene.
E) 3-methyl-2-pentene.
F) 3-methyl-1-pentene.
G) 2-methyl-2-pentene.
11.
When 3-bromo-2,3-dimethylhexane is heated with sodium ethoxide in ethanol, the major product is
A) 2,3-dimethyl-1-hexene.
B) 2,3-dimethyl-2-hexene
C) (Z)-2,3-dimethyl-3-hexene.
D) (E)-2,3-dimethyl-3-hexene.
E) 2-isopropyl-1-pentene.
Explanation / Answer
9.
When (1R,2R)-1-bromo-2-methylcyclohexane is heated with sodium methoxide in methanol, the major product is
A) (S)-4-methylcyclohexene.
B) 1-methylcyclohexene.
C) (R)-3-methylcyclohexene.
D) (R)-4-methylcyclohexene.
E) (S)-3-methylcyclohexene.
10.
When 3-bromo-3-methylpentane is heated with sodium methoxide in methanol, the major elimination product is
A) 4-methyl-1-pentene.
B) 2-ethyl-1-butene.
C) 2-methyl-1-pentene.
D) 4-methyl-2-pentene.
E) 3-methyl-2-pentene.
F) 3-methyl-1-pentene.
G) 2-methyl-2-pentene.
11.
When 3-bromo-2,3-dimethylhexane is heated with sodium ethoxide in ethanol, the major product is
A) 2,3-dimethyl-1-hexene.
B) 2,3-dimethyl-2-hexene
C) (Z)-2,3-dimethyl-3-hexene.
D) (E)-2,3-dimethyl-3-hexene.
E) 2-isopropyl-1-pentene.
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