676465-41-1

Upstream product

• 676465-38-6 2,4-di-tert-butyl-6-[(4-methylsulfanylphenyl)piperidin-1-ylmethyl]phenol 
• 3446-89-7 4-(Methylthio)benzaldehyde 
• 143-33-9 sodium cyanide 
• 96-76-4 2,4-di-tert-Butylphenol 

Relevant academic research and scientific papers

A Concise Route to 2-Amino-3-aryl-3H-benzofurans and their Use as Precursors to 3-Aryl-3H-benzofuran-2-one and 1H-Benzofuro[2,3-￡]pyridin-2- one Derivatives

A concise approach to 2-amino-3-aryl-3H-benzofurans based on the Michael addition of NaCN onto in situ generated substituted o-quinone methides has been developed. Straightforward access to 3-aryl-3H-benzofuran-2-ones was achieved upon acidic hydrolysis whereas JV-Boc-protected 2-amino-3-aryl-3H-benzofurans underwent smooth intramolecular cyclisation to give 1H-benzofuro[2,3-b]pyridin- 2-one derivatives.

Process for the preparation of 3-aryl-benzofuran-2-ones

The instant invention discloses a process for the preparation of compounds of formula I wherein the general symbols are as defined in claim 1, which process comprises hydrolyzing a compound of formula V wherein the general symbols are as defined in claim 1, in an aqueous solvent in the presence of an acid. The compounds of the formula V are new and useful as stabilizers for protecting organic materials, in particular polymers and lubricants, against oxidative, thermal or light-induced degradation.