Question

4. Give the expected product formed. ANSWER 1. CH3MgBr (excess) 2. H3O+ 3. PCC in CH2Cl2 A or B or C or D 5. Which set of reaction conditions is best suited for the preparation of 2,2-dimethylpropanoic acid from 2-bromo-2-methylpropane? ANSWER A) 1. NaCN in ethanol; 2. H3O(+) & heat B) 1. NaC?CH in ether; 2. aqueous KMnO4 & heat C) 1. Mg in ether; 2. CO2, then H3O(+) D) 1. Mg in ether; 2. CH3CHO; 3. Jones' reagent

          4. Give the expected product formed. ANSWER ______

1. CH3MgBr (excess)
2. H3O+
3. PCC in CH2Cl2

A or B or C or D

5. Which set of reaction conditions is best suited for the preparation of 2,2-dimethylpropanoic acid from 2-bromo-2-methylpropane? ANSWER ______
A) 1. NaCN in ethanol; 2. H3O(+) & heat
B) 1. NaC?CH in ether; 2. aqueous KMnO4 & heat
C) 1. Mg in ether; 2. CO2, then H3O(+)
D) 1. Mg in ether; 2. CH3CHO; 3. Jones' reagent

4. Give the expected product formed. ANSWER

1. CH3MgBr (excess)
2. H3O+
3. PCC in CH2Cl2

A or B or C or D

5. Which set of reaction conditions is best suited for the preparation of 2,2-dimethylpropanoic acid from 2-bromo-2-methylpropane? ANSWER
A) 1. NaCN in ethanol; 2. H3O(+) heat
B) 1. NaC?CH in ether; 2. aqueous KMnO4 heat
C) 1. Mg in ether; 2. CO2, then H3O(+)
D) 1. Mg in ether; 2. CH3CHO; 3. Jones' reagent

Added by Sean C.

Chemistry: Structure and Properties

Nivaldo Tro 2nd Edition

Instant Answer

Solved by Expert Preeti Kumari

Step 1

CH3MgBr (excess) will react with 2-bromo-2-methylpropane to form a Grignard reagent, which is a strong nucleophile. The reaction will form a tertiary alcohol: $$\text{CH}_3\text{MgBr} + \text{(CH}_3\text{)}_2\text{CBrCH}_3 \rightarrow Show more…

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4. Give the expected product formed. ANSWER 1. CH3MgBr (excess) 2. H3O+ 3. PCC in CH2Cl2 A B C D 5. Which set of reaction conditions is best suited for the preparation of 2,2-dimethylpropanoic acid from 2-bromo-2-methylpropane? ANSWER A) 1. NaCN in ethanol; 2. H3O(+) & heat B) 1. NaC≡CH in ether; 2. aqueous KMnO4 & heat C) 1. Mg in ether; 2. CO2, then H3O(+) D) 1. Mg in ether; 2. CH3CHO; 3. Jones' reagent