Reaction Sequence and Product Identification
Introduction: In the given reaction sequence, we have to identify the products a and b. Let's break down the reaction sequence step by step:
Step 1:
Reaction: CH3CH2MgBr + H2O →
Product: CH3CH2OH + MgBrOH
Explanation:
The reaction involves the addition of water to the Grignard reagent CH3CH2MgBr to form an alcohol and magnesium hydroxide (MgBrOH) as a byproduct.
Step 2:
Reaction: CH3CH2OH + Na →
Product: CH3CH2ONa + 1/2 H2
Explanation:
The alcohol CH3CH2OH is treated with sodium to form sodium ethoxide (CH3CH2ONa) and hydrogen gas.
Step 3:
Reaction: CH3CH2ONa + CH3CH2Br →
Product: (CH3CH2)2CHONa + Br-
Explanation:
Sodium ethoxide (CH3CH2ONa) reacts with ethyl bromide (CH3CH2Br) to form diethyl ether ((CH3CH2)2CHONa) and bromide ion (Br-).
Step 4:
Reaction: (CH3CH2)2CHONa + HCl →
Product: (CH3CH2)2CHOH + NaCl
Explanation:
The diethyl ether ((CH
3CH
2)
2CHONa) is treated with hydrochloric acid (HCl) to form diethyl ether hydrochloride