Portmess Organic Review 23

Portmess Organic Review 23 - c. (1 S ,2 S...

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6. Which of the following compounds does NOT give a tertiary alcohol upon reaction with methylmagnesium bromide? a. 3-methylpentanal b. ethyl benzoate c. 4,4-dimethylcyclohexanone d. 4-heptanone 7. Which of the following compounds gives a secondary alcohol upon reaction with methylmagnesium bromide? Assume the usual acid workup. a. butyl formate b. 3-pentanone c. pentanal d. methyl butanoate 8. Predict the product of the following reaction. a. (1 R ,2 S )-2,3,3-trimethylcyclohexanol + enantiomer b. ( R )-1,2,2-trimethylcyclohexanol + enantiomer
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Unformatted text preview: c. (1 S ,2 S )-2,3,3-trimethylcyclohexanol + enantiomer d. (1 R ,2 S )-2,3,3-trimethylcyclohexanediol + enantiomer 9. Which of the following statements about organometallic compounds is FALSE? a. Alkyllithium reagents (RLi) add to the carbonyl group of aldehydes and ketones. b. Grignard reagents (RMgBr) add to the carbonyl group of aldehydes and ketones. c. Alkyllithium and Grignard reagents do not add to esters. d. Grignard reagents are prepared in ether or tetrahydrofuran (THF)....
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