Synthesis of a series of carbon‐14 labelled 4‐aminoquinazolines and quinazolin‐4 (3H)‐ones

4-Aminoquinazolines and quinazolin-4 (3H)-ones, both labelled with carbon-14 in the 4-position, were prepared from 2-aminobenzonitrile-[cyano-14C] and 2-aminobenzoic acid-[carboxy -14C] or 2-amino- benzamide-[carboxy -14C], respectively, using rapid, one-pot procedures under microwave enhanced conditions. Copyright © 2009 John Wiley & Sons, Ltd.