Method to convert lignin 4-O-5 diaryl ethers and their model compounds into organic chemicals
AssigneeThe Royal Institution for the Advancement of Learning/Mcgill University
InventorsHuiying Zeng, Chao-Jun Li, Dawei Cao
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Abstract
It is provided a method of converting a diaryl ether source such as lignin and/or polyphenylene oxide (PPO) containing 4-O-5 linkages and an inorganic chemical such as ammonia into an organic compound, comprising reacting said diaryl ether source with the inorganic chemical in presence of a catalyst, preferably palladium, transforming the 4-O-5 linkages of said diaryl ether source into the organic compound. It is provided a palladium-catalyzed synthesis of aniline derivatives from 4-O-5 linkage lignin model compounds and cheap industrial inorganic chemical ammonia via dual C(Ar)—O bond cleavage.
Claims15
A method of converting a diaryl ether source containing 4-O-5 linkages and an inorganic amine chemical or ammonia into an organic compound, comprising reacting said diaryl ether source with the inorganic amine chemical or the ammonia in presence of a catalyst and a reducing agent, transforming the 4-O-5 linkages of said diaryl ether source into the organic compounds, wherein the reducing agent is HCO2Na, formic acid, ammonium formate, NaH, H2 or NaBH4.
Dependencies are inferred from the claim text.