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M-Digallic acid

Digallic Acid (m-DigaUic acid, 5 6-dibydr. oxy-3-carboxyphenyl ester of gaUic acid)... [Pg.808]

The diphenylmethylene ether, introduced by Robinson, is on the other hand a much more useful and selective protecting group. It is removed by hydrogenolysis or by treatment with hot acetic acid and has been used to prepare a number of partially benzylated and methylated polyphenols. A typical example is the synthesis of methyl m-digallate (61) by condensation of (56) and (59) to give the intermediate (60) hydrogenolysis then gives (61) [91]. [Pg.171]

See other pages where M-Digallic acid is mentioned: [Pg.25]    [Pg.27]    [Pg.135]    [Pg.496]    [Pg.253]    [Pg.698]    [Pg.22]    [Pg.454]    [Pg.655]    [Pg.655]    [Pg.656]    [Pg.528]    [Pg.25]    [Pg.27]    [Pg.135]    [Pg.496]    [Pg.253]    [Pg.698]    [Pg.22]    [Pg.454]    [Pg.655]    [Pg.655]    [Pg.656]    [Pg.528]    [Pg.160]    [Pg.692]    [Pg.49]   
See also in sourсe #XX -- [ Pg.21 , Pg.25 ]

See also in sourсe #XX -- [ Pg.251 ]



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Digallic acid

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