99779-22-3

Upstream product

• 857580-47-3 1-benzoylamino-2,4-bis-benzoyloxy-benzene 
• 13066-95-0 4-aminoresorcinol 
• 98-88-4 benzoyl chloride 
• 71516-07-9 N-(2,4-dihydroxyphenyl)-acetamide 
• 71516-10-4 N,O,O-triacetyl-4-aminoresorcinol 
• 227941-79-9 C₂₂H₁₇NO₅ 
• 86399-83-9 N-[2-((4-methoxybenzoyl)oxy)phenyl]-4-methoxybenzamide 

Downstream Products

• 116496-30-1 6-hydroxy-2-phenylbenzoxazole 

Relevant academic research and scientific papers

The conversion of mixed N,O-diacylated 2-aminophenols to 2-substituted benzoxazoles

When N,O-diacylated 2-aminophenols that have different acyl substituents on nitrogen and oxygen are treated with p-toluenesulfonic acid in refluxing xylenes, mixtures of benzoxazoles are produced. The major product is the benzoxazole in which the substituent at the 2-position is derived from the acyl group on nitrogen. This product may arise from an unusual case of acid- mediated neighboring amido-group assisted hydrolysis.