jo001422u_si_001.pdf (597.75 kB)
Download file

Novel Anionic Annelation Tactics for Construction of Fused Heteroaromatic Frameworks. 1. Synthesis of 4-Substituted Pyrazolo[4,3-c]quinolines, 9-Substituted Pyrazolo[3,4-c]quinolines, and 1,4-Dihydrochromeno[4,3-c]pyrazoles

Download (597.75 kB)
journal contribution
posted on 16.05.2001, 00:00 authored by Jan Pawlas, Per Vedsø, Palle Jakobsen, Per Olaf Huusfeldt, Mikael Begtrup
4-Substituted pyrazolo[4,3-c]quinolines 4ai and 6ab were prepared from pyrazole 3 whereas 9-substituted pyrazolo[3,4-c]quinolines 9ad and 17 were prepared from pyrazole 13 utilizing anionic annelation techniques. 1,4-Dihydrochromeno[4,3-c]pyrazoles 7ac were accessed from pyrazole 3, extending the method for the synthesis of 4ai.

History