Process for the preparation of 4(3h) - quinazolinones

Details Process for the preparation of 4(3h) - quinazolinones Process for the preparation of 4(3h) - quinazolinones

C - Chemistry, Metallurgy

07

D

260/254, 260/242

C07D 403/04 (2006.01) C07D 257/06 (2006.01) C07D 491/056 (2006.01)

Patent

CA 1252094

ABSTRACT OF THE DISCLOSURE A new process for the preparation of 3-(1H-tetra- zol-5-yl)-4(3H)-quinazolinones from anthranilic acid derivatives is described herein. Additional reactants used in the process are 4-aminotetrazole and a tri- alkoxymethane or the reaction can be carried out using the imidic ester obtained from these two compounds.

481295

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