Electrolytic reduction of dihydrobenzopyranoxanthenones

Details Electrolytic reduction of dihydrobenzopyranoxanthenones Electrolytic reduction of dihydrobenzopyranoxanthenones

1977-05-26

1978-04-04

Edmundson, F.C.

Chemistry: electrical and wave energy

Processes and products

204 73R, C25B 304

Patent

active

040826279

ABSTRACT:
Dihydrobenzopyranoxanthenones of the formula ##STR1## are electrolytically reduced to their corresponding hexahydrobenzopyranoxanthenones at a mercury cathode in the presence of a proton source and in the presence of an electrolyte selected from the group consisting of alkali metal salts, quaternary ammonium salts having a total of about 10 to about 28 carbon atoms in the cation moiety, and tertiary amine salts having a total of about 7 to about 21 carbon atoms in the cation moiety.

REFERENCES:
patent: 3361653 (1968-01-01), Miller
patent: 3444059 (1969-05-01), Throop
patent: 3925173 (1975-12-01), Junghans

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