Production process of 2,6-bis(4-hydroxy-3,5-...

Details Production process of 2,6-bis(4-hydroxy-3,5-... Production process of 2,6-bis(4-hydroxy-3,5-...

C - Chemistry, Metallurgy

07

D

260/367.2, 260/3

C07D 493/04 (2006.01)

Patent

CA 1239412

A Production Process of 2,6-bis (4-hydroxy-3,5-dimethoxyphenyl- 3,7-dioxabicyclo [3.3.0] octane Abstract of the Disclosure This invention discloses a process for producing 2,6-bis (4-hydroxy-3,5-dimethoxyphenyl)-3,7-dioxabicyclo [3.3.0] octane, i.e. syringaresinol and stereo-isomers thereof, from plant which contain lignin with syringyl unit. The process comprises heat- ing plant under pressure in hydrous condition, and then quickly discharging them therefrom into an environment at atmospheric pressure so as to explode into pieces and subjecting the fine pieces to extraction with organic solvent such as methanol and acetone or an alkaline solution such as sodium hydroxide and pu- rification.

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