Abstract
Treatment of 3,4-dihydro-6,7-dimethoxy-1-methylisoquinoline 1 with α-bromoketones 2a-c in benzene in presence of triethylamine afforded the corresponding pyrrolo[2,l-a]isoquinoline 4. Also treatment of 3,4-dihydro6,7-diethoxyisoquinoline-1-carbonitrile 10 with α-bromo ketones 2a,b,d under the same reaction condition afforded the corresponding pyrroloisoquinoline 12. While treatment of isoquinolinium salt 11 with p-tolyldiazonium chloride in ethanol afforded triazoloisoquinoline derivative 16.
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