Koala is a GUI application for Less, Sass, Compass and CoffeeScript compilation, to help web developers to use them more efficiently. Koala can run in windows, linux and mac.
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4. **Lithiation & formylation** N‑(2‑pyridyl)‑4‑methoxy‑benzamide + n‑BuLi → ortho‑lithiated intermediate; quench with DMF → aldehyde.

3. **Amide coupling** 4‑methoxy‑benzoic acid + 2‑aminopyridine → N‑(2‑pyridyl)‑4‑methoxy‑benzamide (EDC·HCl, HOBt, DMF). sone096 full

2. **Oxidation** 4‑methoxy‑acetophenone → 4‑methoxy‑benzoic acid (KMnO₄, reflux). sone096 full