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Synthesis of novel heterocycles : Oxazolo[4,5-b]pyridines and oxazolo[4,5-d]pyrimidines

✍ Scribed by M Doise; F Dennin; D Blondeau; H Sliwa

Publisher: Elsevier Science
Year: 1990
Tongue: French
Weight: 127 KB
Volume: 31
Category: Article
ISSN: 0040-4039
DOI: 10.1016/s0040-4039(00)88750-x

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## Abstract magnified image 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