CH3 H3C 'OH CH3 (-)-menthol [a]D = -50.0° Cr2O72- NaBH4 CH3 H3C CH3 (-)-menthone [a] =-29.6° NaBH4 CH3 'OH H3C CH3 (+)-neomenthol [a]D = +20.7°

Organic Chemistry
9th Edition
ISBN:9781305080485
Author:John E. McMurry
Publisher:John E. McMurry
Chapter20: Carboxylic Acids And Nitriles
Section20.SE: Something Extra
Problem 52AP
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Please help with curly arrow mechanisms for this reaction

H3C
CH3
'OH
CH3
(-)-menthol
[a]o = -50.0°
Cr2O,2-
NaBH4
CH3
H3C
CH3
(-)-menthone
[a] =-29.6°
NaBH4
CH3
ОН
H3C
CH3
(+)-neomenthol
[@] = +20.7°
Transcribed Image Text:H3C CH3 'OH CH3 (-)-menthol [a]o = -50.0° Cr2O,2- NaBH4 CH3 H3C CH3 (-)-menthone [a] =-29.6° NaBH4 CH3 ОН H3C CH3 (+)-neomenthol [@] = +20.7°
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