473835-88-0Relevant academic research and scientific papers
Reaction of 1-alkylthioisoquinolinium salts with active methylene compounds
Fujita, Reiko,Watanabe, Noriyuki,Tomisawa, Hiroshi
, p. 225 - 228 (2007/10/03)
2-Alkyl-1-alkylthioisoquinolinium salts were readily prepared from 2-alkyl-1(2H)-isoquinolones via 2-alkyl-1(2H)-thioisoquinolones in two steps. Under mild conditions, the reaction of 2-alkyl-l-alkylthioisoquinolinium salts with active methylene compounds in the presence of sodium hydride afforded 2-alkyl-1-(substituted methylene) iso-quinolines in good yields. Pyrrolo[2,1-a]isoquinolines were synthesized by the cyclization of 2-benzyl-1-(substituted methylene)isoquinolines using acetic anhydride.
Novel synthesis of pyrrolo[2,1-a]-isoquinoline using the reaction of isoquinolinium salts with active methylene compounds
Fujita, Reiko,Watanabe, Noriyuki,Tomisawa, Hiroshi
, p. 435 - 438 (2007/10/03)
2-Alkyl-1-methylthioisoquinolinium salts were easily prepared from 2-alkyl-1(2H)-isoquinolones via 2-alkyl-1(2H)-thioisoquinolones in two steps. Under mild conditions, the reaction of 2-alkyl-1-methylthioisoquinolinium salts with active methylene compounds in the presence of sodium hydride afforded 2-alkyl-1-(substituted methylene)isoquinolines in good yields. The cyclizationof 2-benzylisoquinolines using acetic anhydride produced the pyrrolo[2,1-a]isoquinolines. Further, the reaction of 1-chloro-2-phenacylisoquinolinium salt with active methylene compounds afforded the pyrrolo[2,1-a]isoquinolines in one pot.
