Draw the hemiacetal and then the acetal formed in each reaction. In each case, assume an excess of the alcohol. (a) Propanal+ methanol ->> (b) Cyclopentanone + methanol →

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42 Draw the hemiacetal and then the acetal formed
in each reaction. In each case, assume an excess
of the alcohol.
(D)
12
(a) Propanal+ methanol →
(b) Cyclopentanone + methanol-
Drow the at
Transcribed Image Text:42 Draw the hemiacetal and then the acetal formed in each reaction. In each case, assume an excess of the alcohol. (D) 12 (a) Propanal+ methanol → (b) Cyclopentanone + methanol- Drow the at
Expert Solution
Step 1: Hemiacetals and acetals

Hemiacetals are formed by the reaction between an aldehyde or a ketone and an alcohol molecule. This reaction results in the formation of a compound with a C atom having an alcohol group and an alkoxy group. 

Acetals are compounds formed by the reaction between a hemiacetal and an alcohol group. This reaction results in the formation of a compound with a C atom having two alkoxy groups. 

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