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1. Which enantiomer is formed from attack of a methyl Grignard reagent on the si

ID: 1017241 • Letter: 1

Question

1. Which enantiomer is formed from attack of a methyl Grignard reagent on the si face of benzaldehyde 3. What sequence of reactions would best accomplish the following conversion? CH3CHCH2CH CH3CCH2CH A) NaBH4 /H30+ C) KMno4/Ho heat D) LiAlH4/H30t 11. Give the product for the following reaction. CHpH A) CH3 CH2CH2OH B) HOCH2CH2CH20H CH3 CH2CH3 E) CH,CH. 18.) What is the relationship between the following compounds? HC O o CH A) conformational isomers B) constitutional isomers Ho -H C) identical and Ho- -H D) enantiomers E) diastereomers CH20H CH20H

Explanation / Answer

Which enantiomers is formed from attack of a methyl Grignard reagent on the si face of

Benzaldehyde

Answer A

What sequence of reactions would best accomplish the following conversion?

CH3-C-CH2-CH --> CH3-C-CH2-CH

         ||      ||                      |             ||

          O      O                     OH         O

Answer B

HOCH2CH2OH/ H+; NaBH4; H+/H2O

Give the product for the following reaction

CH3-C-H          H2O/H+   -->    CH3-CH2-CH2OH

What is relationship between the following compounds

Enantiomers

Both compounds are mirror images of each other.