32058-60-9

Upstream product

• 95-55-6 2-amino-phenol 
• 16588-34-4 4-chloro-3-nitro-benzaldehyde 
• 96-99-1 4-chloro-3-nitrobenzoate 
• 2835-98-5 2-Hydroxy-4-methylanilin 
• 402605-84-9 C₁₃H₉ClN₂O₄ 

Downstream Products

• 1268527-52-1 5-benzooxazol-2-yl-3-ethyl-2-[(E)-2-(methylphenylamino)ethenyl]-1-phenyl-1H-benzoimidazol-3-ium iodide 
• 1268527-77-0 [(E)-2-(5-benzooxazol-2-yl-1-phenyl-1H-benzoimidazol-2-yl)ethenyl]methylphenylamine 
• 1268527-72-5 4-benzooxazol-2-yl-N₁-phenylbenzene-1,2-diamine 

Relevant academic research and scientific papers

Samarium(III) triflate: A new catalyst for facile synthesis of benzothiazoles and benzoxazoles from carboxylic acids in aqueous media

A facile synthetic method for benzothiazoles and benzoxazoles comprising the reaction of corresponding 2-aminothiophenol and 2-aminophenol with various substituted aromatic carboxylic acids using Samarium(III) triflate as a catalyst has been described. The advantages of the method are short reaction times and aqueous reaction media and easy work-up. The catalysts can be recovered for the subsequent reactions and reused without any appreciable loss of efficiency.

A microwave assisted synthesis of benzoxazoles from carboxylic acids

A series of various poly-substituted benzoxazoles were synthesized starting from readily available carboxylic acids. The method is based on TCT (cyanuric chloride)/microwave acid activation and it is characterized by mild conditions, allowing for a wide range of starting materials and functionalization of final products.