23905-52-4

Upstream product

• 123217-06-1 3-(p-Bromophenacyl)-2-thionoquinazolin-4(3H)-one 
• 118-92-3 anthranilic acid 

Downstream Products

• 1045-99-4 3-(4-bromo-phenyl)-7-nitro-thiazolo[2,3-b]quinazolin-5-one 
• 1038-86-4 7-bromo-3-(4-bromo-phenyl)-thiazolo[2,3-b]quinazolin-5-one 

Relevant academic research and scientific papers

Quinazolones: Part XIII - A New Approach to the Synthesis of Some Oxazolo- & Thiazolo-quinazolones

A new unambiguous route for the synthesis of hitherto unknown 3-aryl-oxazoloquinazolin-5-ones (6) and a new one-step route for the preparation of 3-arylthiazoloquinazolin-5-ones (7) involving intramolecular cycloaddition are described.