(A) In the J → K transformation, dilute HCl (10%) was used to first deprotect/ unmask the acetal and ketal. Show the mechanism (use H³O*) for formation of the northern cyclohexene ring starting from the aldehyde and secondary amine. No need to show the mechanism of the acetal / ketal deprotection to the respective aldehyde and ketone. H -N-H CH3 CH3 CH3 CH3 N. OK

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(A) In the JK transformation, dilute HC1 (10%) was used to first deprotect/ unmask
the acetal and ketal. Show the mechanism (use H3O+) for formation of the northern
cyclohexene ring starting from the aldehyde and secondary amine. No need to show
the mechanism of the acetal / ketal deprotection to the respective aldehyde and
ketone.
H
-N-H
CH3
CH3.
CH31
CH3
K
Transcribed Image Text:(A) In the JK transformation, dilute HC1 (10%) was used to first deprotect/ unmask the acetal and ketal. Show the mechanism (use H3O+) for formation of the northern cyclohexene ring starting from the aldehyde and secondary amine. No need to show the mechanism of the acetal / ketal deprotection to the respective aldehyde and ketone. H -N-H CH3 CH3. CH31 CH3 K
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