When (1R,2R)-1-chloro-2-methylcyclohexan e is heated with NaOCH3, the predominant product is...?

A. 3-methylcyclohex-1-ene (racemic)
B. methylcyclohexene
C. (1S,2R)-1-methoxy-2-methylcyclohexa ne
D. (S)-3-methylcyclohex-1-ene
E. (R)-3-methylcyclohex-1-ene
F. (1R,2R)-1-methoxy-2-methylcyclohexa ne

The correct answer is option E.

Explanation:

When (1R,2R)-1-chloro-2-methylcyclohexane is heated with a strong base such as NaOCH3, the predominant product will be an alkene.

It is important to note that when such compounds undergo elimination as a result of heat, the resultant product is usually an alkene.

The available options are:

A. 3-methylcyclohex-1-ene (racemic)

B. methylcyclohexene

C. (1S,2R)-1-methoxy-2-methylcyclohexane

D. (S)-3-methylcyclohex-1-ene

E. (R)-3-methylcyclohex-1-ene

F. (1R,2R)-1-methoxy-2-methylcyclohexane

The correct answer is E.

Therefore, the compound will undergo elimination reaction to give an alkene( . (R)-3-methylcyclohex-1-ene ).