Bischler-Napieralski ·
Amide → Dihydroisoquinoline
un
seel
.com · POCl₃ cyclodehydration · 1893
C1 species
amide C=O
Ring closed
no
Stage
N-acyl-β-arylethylamine
Electron-rich arene
Nitrogen
Carbonyl O / leaving O
Acyl carbon (C1)
New C-C bond
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.com · Bischler-Napieralski