An expeditious strategy has been developed for the synthesis of diverse quinolines, indenoquinolines and acridines using KOtBu‐mediated reaction conditions. The designed process utilizes 2‐aminoaryl carbaldehydes/2‐aminoaryl ketones and methyl/methylene group containing ketones as readily available feedstock. The chemical transformation was affected at room temperature within a short duration of time to obtain diverse N‐heterocycles yields up to 92 %. The established process also exhibits considerable functional group tolerance with an operational simplicity. A potassium tert‐butoxide mediated approach has been envisioned towards the synthesis of quinolines, indenoquinoline and acridines from their corresponding 2‐aminoaryl carbaldehydes/2‐aminoaryl ketones and methyl/methylene group containing ketones. The developed operational friendly reaction conditions hold good for wide range of substrates by delivering the desired products in good to excellent yields at room temperature and shorter reaction time.