Menthone is a naturally occurring monoterpene organic compound with a molecular

Question

Menthone is a naturally occurring monoterpene organic compound with a molecular formula C10H18O. Menthone is used in perfumery and cosmetics for its characteristic aromatic and minty odor. The specific rotation of (-)menthone is -20. What is the %ee of a sample of menthone that exhibits a specific rotation of +7?

22. Menthone is a naturally occurring monoterpene organic compound with a molecular formula C10H18O. Menthone is used in perfumery and cosmetics for its characteristic aromatic and minty odor. The specific rotation of (-)-menthone is -20. What is the ee of a sample of menthone that exhibits a specific rotation of +7? (-)menthone a, 29 b. 35 c.. 47 d. 65 e, 81

Explanation / Answer

% ee of sample = 100*specific rotation of sample/ specific rotation of pure sample= 100*7/20= 35%

so B is correct answer.

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