Heterocycles p. 103 - 117 (1999)
Update date:2022-08-05
Topics:
Kohno, Harumichi
Yamada, Koichiro
3,4-Dihydroisoquinolines (10, 13) and isoquinolines (11), having various electron withdrawing substituent were synthesized in two steps from N- benzenesulfonyl- or N, N-dimethylsulfamoyl-β-phenethylamines (2 and 5). A novel cyclization method using ethyl chloro(methylthio)acetate (1) in the presence of SnCl4 as Lewis acid, followed by acid or base treatment provides the title compounds in good yield.
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