The raspberry-flavoured food additive, butyl methanoate, can be prepared from CH₃CH₂CH₂CH₂OH using
A - VCE - SSCE Chemistry - Question 8 - 2006 - Paper 1
Question 8
The raspberry-flavoured food additive, butyl methanoate, can be prepared from CH₃CH₂CH₂CH₂OH using
A. an addition reaction with HCOOH.
B. an addition reaction with C... show full transcript
Worked Solution & Example Answer:The raspberry-flavoured food additive, butyl methanoate, can be prepared from CH₃CH₂CH₂CH₂OH using
A - VCE - SSCE Chemistry - Question 8 - 2006 - Paper 1
Step 1
an addition reaction with HCOOH
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Answer
Addition reactions generally involve the addition of nucleophiles to electrophiles, which is not the case for butyl methanoate preparation.
Step 2
an addition reaction with CH₃COOH
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Answer
Similar to the previous point, this type of reaction does not facilitate the correct formation of butyl methanoate.
Step 3
a condensation reaction with HCOOH
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Answer
This is the correct method. Condensation reactions involve the reaction of an alcohol with a carboxylic acid to form an ester and water. Here, butanol reacts with formic acid (HCOOH) to produce butyl methanoate.
Step 4
a condensation reaction with CH₃COOH
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Answer
Though possible, this reaction leads to a different ester (butyl acetate) instead of butyl methanoate.
