1-Alkyl-substituted-1,2,3,4-tetrahydroanthraquinones

Details 1-Alkyl-substituted-1,2,3,4-tetrahydroanthraquinones 1-Alkyl-substituted-1,2,3,4-tetrahydroanthraquinones

1976-04-30

1976-12-21

Vertiz, Oscar R.

Chemistry of inorganic compounds

Oxygen or compound thereof

Peroxide

C01B 1502

Patent

active

039989372

ABSTRACT:
1-Alkyl and 1,3-dialkyl substituted-1,2,3,4-tetrahydroanthraquinones are provided which may also be alkyl substituted in the 6- and/or 7- position. These compounds are provided by condensing a naphthoquinone with an alkyl-substituted butadiene dimer, catalytically hydrogenating the adduct, then oxidizing the resulting hexahydro compound to the desired tetrahydroanthraquinone. Alternatively, the condensation product may be oxidized with a cupric compound or with air plus a weak base, and this compound catalytically hydrogenated and then oxidized to the corresponding tetrahydroanthraquinone. The compounds of this invention exhibit superior solubility in solvents commonly used in the cyclic process for manufacturing H.sub.2 O.sub.2 and thus enhance H.sub.2 O.sub.2 production.

REFERENCES:
patent: 2657980 (1953-11-01), Sprauer
patent: 2867507 (1959-01-01), Gleason et al.
patent: 3307909 (1967-03-01), Reilly
Beilstein, Handbuch der Organische Chemie, vol. 7(II), 1948, pp. 666-669.

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