12. When (2S,3S)-2-bromo-3-methylpentane undergoes reaction with sodium methoxid

Question

12.

When (2S,3S)-2-bromo-3-methylpentane undergoes reaction with sodium methoxide in methanol, the product is  

A) 3-methyl-1-pentene
B) 2-methyl-1-pentene
C) (Z)-3-methyl-2-pentene
D) 2-methyl-2-pentene
E) (E)-3-methyl-2-pentene

13.

When 3-bromo-3-methylpentane is heated with sodium methoxide in methanol, the minor product is

A) 2-ethyl-1-butene.
B) 2-methyl-2-pentene.
C) 4-methyl-1-pentene.
D) 3-methyl-2-pentene.
E) 4-methyl-2-pentene.
F) 2-methyl-1-pentene.
G) 3-methyl-1-pentene.

14.

When (2S,3R)-2-bromo-3-methylpentane undergoes reaction with sodium methoxide in methanol, the product is   

A) 2-methyl-1-pentene
B) (E)-3-methyl-2-pentene
C) 2-methyl-2-pentene
D) 3-methyl-1-pentene
E) (Z)-3-methyl-2-pentene

Explanation / Answer

12. E) (E)-3-methyl-2-pentene

13. A) 2-ethyl-1-butene.

14. B) (E)-3-methyl-2-pentene.

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