ChemInform Abstract: Synthesis of 2‐Amino 3‐Substituted Quinazolin‐4(3H)‐one Derivatives via Iodine‐Mediated Guanidinylation of Pbf‐Activated Thiourea.
Abstract:2‐Amino 3‐substituted‐quinazolin‐4(3H)‐one derivatives were synthesized from Pbf‐isothiocyanate and methyl anthranilate. The construction of the guanidine‐containing quinazolinone heterocyclic skeleton was achieved using Pbf‐activated thiourea treated with primary amines via iodine‐mediated guanidinylation. The desired compounds were obtained after Pbf cleavage by trifluoroacetic acid.
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