Hindered phenol derivatives of 9-thiabicyclononanes and stabiliz

Details Hindered phenol derivatives of 9-thiabicyclononanes and stabiliz Hindered phenol derivatives of 9-thiabicyclononanes and stabiliz

1975-05-27

1976-12-28

Hoke, V.P.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

252482, 252 57, 260 4585S, 260327TH, 2603321, 2603323R, 260800, C08K 545, C07D33500

Patent

active

040001121

ABSTRACT:
The 9-thiabicyclononane derivatives have the formula ##STR1## wherein R.sub.1 and R.sub.2 are each independently tertiary alkyl of 4 to 8 carbon atoms or .alpha.,.alpha.-dimethylbenzyl, and n is 0 to 2.
The 9-thiabicyclononanes are prepared by reacting an alkali salt of 2,6-di-tert-alkylphenols with 2,6-dichloro-9-thiabicylo[3.3.1]nonane in a dipolar aprotic solvent. The sulfoxide and sulfones are prepared from the sulfides by oxidation with peracids.
The compounds are useful as stabilizers for organic materials, particularly turbine oils and polyolefins, subject to oxidative degradation.

REFERENCES:
patent: 2514210 (1950-07-01), Albert
patent: 2662061 (1953-12-01), Gilcrease et al.
patent: 3149093 (1964-09-01), Hecker
patent: 3168480 (1965-02-01), Worrel
patent: 3256361 (1966-06-01), Harding et al.
patent: 3546164 (1970-12-01), Stewart et al.
patent: 3644415 (1972-02-01), Weil et al.

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