Diethyl ether, wood solubility

Diethyl Ether. The solubility of wood in diethyl ether is determined in the same way as EtOH/benzene solubility. 

BenZenetetrol. 1,2,3,4-Tetiahydioxybenzene 01 apionol (59) forms needles from benzene (mp 161°C). It is easily soluble in water, diethyl ether, ethanol, and glacial acetic acid and is spariagly soluble ia benzene. It has been identified as one of the many constituents of wood—vinegar distillate (202). 

The wood of A. sachalinensis was extracted with 95 % EtOH. Repeated silica-gel column chromatographies of the diethyl ether solubles of the EtOH extract resulted in the isolation of fourteen lignans(1-14). Among them, four compounds (1-4) were represented in the examples of naturally occurring lignan lactols and acetals, and were characteristic lignans of A. sachalinensis. 

The EtOH extracts of the wood of S. sachalinensis was fractionated with diethyl ether and the solubles subjected to silica-gel column and preparative thin-layer chromatographies to give (+)-syringaresinol and two lignan esters 23 and 24. 

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