USPatentGranted

Unsymmetrical organic disulfide compounds useful as antiradiation agents

Granted 28 Aug 1990 · no office action yet

Application
907882
filed 16 Sep 1986
Publication
Not published
not published
Patent· this page
US 4,952,338
granted 28 Aug 1990

Life of the patent

2 dated events
⤢ drag to zoomJul 1986Jan 1987Jul 1987Jan 1988Jul 1988Jan 1989Jul 1989Jan 1990Jul 1990Prosecution
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Abstract

Unsymmetrical organic disulfide sulfinate compounds, useful as an antiradiation agents, having the general formula: ##STR1## wherein A is one or of the following polar groups, OH, COOH, SO.sub.3 Na, --C(O)--, or derivatives such as esters and nonamino nitrogen derivatives such as amides or nitriles; k is an integer of one to eight; Y is a straight or substituted aliphatic chain haivng from two to eight carbon atoms which may have one or more S--S groups interposed therebetween; m signifies the number of carbon atoms in an aliphatic chain Y containing 2 to 8 carbon stoms which may have S--S interposed; aliphatic chain Y, substituted with one or more polar groups of the number k is attached to one of the two sulfur atoms shown. The second sulfur atom is attached through an aliphatic chain of 2 to 5 carbon atoms to the sulfinate function SO.sub.2 M wherein R.sup.1 and R.sup.2 may be hydrogen, aryl, cycloalkyl or various polar groups such as OH, COOH, SO.sub.3 Na, --C(O)--, or derivatives such as esters and nonamino derivatives such as amides or nitriles. The system ##STR2## also may comprise an aromatic ring; n may be the integers 2 through 6; M of the sulfinate function is hydrogen, a metallic element selected from group 1 A of the Periodic Table such as Li, Na, or K, or the equivalent R.sub.4 N+; or an organic group such as a straight or substituted aliphatic chain having up to 4 carbon atoms, designed to promote stability. The synthesis of the compounds occurs by subjecting 1,1-dioxides of cyclic disulfidesto the action of a thiolate ion, whereby cleavage is effected between the sulfur and sulfonyl units.

Claims

2 · 2 independent · depth 1
12
2 granted claims

Classifications

2 codes
USPC · US Patent Classification
562/125558/61

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Pendency
3.9 y
1,442 days filing → grant
Office actions
0
on the grant's record
Examiner
Nicky Chan
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Citations: 5 back · 0 forward

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