bischler napieralski reaction
- 2-phenyl ethyl amine acytylated with acetic anhydride to obtain N-acetyl-2-phenyl ethyl amine. it is react with phosphorus oxychloride results in intramolecular cylisation to form 3,4-dihydro isoquinoline,which on dehydrogenation over palladium gives 1-methylisoquinoline
by single alkyl group by double alkyl group
It very useful
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