Abstract

An alternative green protocol and step economy for the synthesis of quinazoline has been developed. The reaction of readily available 2-aminobenzonitriles with various organometallic reagents led to ortho-aminoaryl NH ketimine species. The subsequent base catalysed NC bond formation with various isothiocyanates afforded quinazoline scaffolds in aqueous medium. The salient features of this protocol are use of readily available inexpensive precursors, water as a green environmentally benign solvent, short reaction time, operational simplicity, easy workup procedure and good functional group tolerance.

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