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US 3,940,402 AGranted
Tris(substituted amino) sulfonium salts
AssigneeE. I. DuPont de Nemours and Company
InventorWilliam Joseph Middleton
Life of this patent
Estimating the term…
Abstract
Trisaminosulfonium salts of the formula (R.sup.1 R.sup.2 N)(R.sup.3 R.sup.4 N)(R.sup.5 R.sup.6 N)S.sup.+ X.sup.- wherein the R groups are alkyl of 1-20 carbons and each alkyl has at least 2 alpha hydrogens and X is selected from the group (CH.sub.3).sub.3 SiF.sub.2, Cl, Br, I, CN, NCO, NCS NO.sub.2 and N.sub.3, are soluble in organic liquids. They are useful as polymerization catalysts and as reagents to replace other atoms or groups in organic compounds with F, Cl, Br, I, CN, NCO, NCS, NO.sub.2 or N.sub.3.
Claims28
An anhydrous compound of the formula
- (R.sup.1 R.sup.2 N)(R.sup.3 R.sup.4 N)(R.sup.5 R.sup.6 N)S.sup.+X.sup.-
- wherein the R groups individually are alkyl of up to 20 carbon atoms each alkyl having at least 2 alpha-hydrogen atoms, with the proviso that any or all of the pairs R.sup.1 and R.sup.2, R.sup.3 and R.sup.4 and R.sup.5 and R.sup.6 taken together with the nitrogen atom to which they are attached from a pyrrolidino or piperidino ring, any substituents being alkyl of up to 8 carbon atoms, and X is selected from the group consisting of (CH.sub.3).sub.3 SiF.sub.2, Cl, Br, I, CN, NCO, NCS, NO.sub.2 and N.sub.3.
Dependencies are inferred from the claim text.