76745-75-0Relevant articles and documents
Reactions of 2H-3,1-Benzoxazine-2,4-(1H)dione (Isatoic Anhydride) (1) with Anions of 1,4-Dihydro-5H-Pyrazol-5-ones: Synthesis of Pyrazoloquinazolin-9-ones
Sircar, Jagadish C.,Capiris, Thomas,Kesten, Stephen J.
, p. 117 - 121 (2007/10/02)
Reactions of 2H-3,1-benzoxazine-2,4-(1H)dione (isatoic anhydride) (1) with anions of 1,4-dihydro-5H-pyrazol-5-ones (2) gave pyrazoloquinazolin-9-ones (3) via the nucleophilic attack of the anion 2b rather than 2a.However, in the case of 5-methoxyis