A Facile Synthesis of 2-Mino-3H-Quinazolin-4-Ones with Tandem Aza-Wittig Reaction

Abstract
2-Amino-3H-quinazolin-4-ones 8 were prepared from tandem aza-Wittig reaction of iminophosphorane 5 with aromatic isocyanate and nucleaphilic reagent HY in mild condition.