1021444-65-4Relevant academic research and scientific papers
Syntheses of Oxazolo[4,5-c]pyridine and 6-Azaindole
Tjosaas, Freddy,Kjerstad, Ivar Broendbo,Fiksdahl, Anne
, p. 559 - 562 (2008)
(Chemical Equation Presented) The preparation of oxazolo[4,5-c]pyridine and 6-azaindole from 4-bromo-3-pivaloylaminopyridine (8) is reported. The oxazolopyridine 2-tert-butyl-oxazolo[4,5-c]pyridine (9) was successfully prepared from 8 in 78% yield by a new base/TBAB promoted non-catalyzed microwave cyclisation strategy (10 min) or, alternatively, in 54% yield by conventional heating (48 hrs) and CuI catalysis. The 6-azaindole 2-phenyl-1-(trimethylacetyl) -6-azaindole (13) was prepared from 8 in a two step procedure, including a Sonogashira coupling reaction.
