Method of preparing polar disulfone-functionalized molecules
AssigneeMinnesota Mining and Manufacturing Company
InventorsGary T. Boyd, George V. Tiers, Cecil V. Francis, Eugene P. Janulis, Robert J. Koshar, Louis M. Leichter
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Abstract
A process for preparing polar disulfone-functionalized molecules, which process comprises performing one or more of the following reactions: (i) reacting a vinyl ether disulfone molecule with an activated aromatic molecule, an activated heterocyclic molecule, a dye base, or a dye olefin; (ii) reacting an enamine disulfone molecule with a dye base or a dye olefin; and (iii) reacting an alkenyl disulfone molecule having a vinylogous methyl or methylene group conjugatively located relative to the disulfone group with an aldehyde or an acetal derived from an aldehyde.
Claims7
A process for preparing polar disulfone-functionalized molecules, which process comprises performing one or more of the following reactions:
- (i) reacting a vinyl ether disulfone molecule with an activated aromatic molecule, an activated heterocyclic molecule, a dye base, or a dye olefin;
- (ii) reacting an enamine disulfone molecule with a dye base or a dye olefin;
- and
- (iii) reacting an alkenyl disulfone molecule having a vinylogous methyl or methylene group conjugatively located relative to the disulfone group with an aldehyde or an acetal derived from an aldehyde.
The process of claim 1, wherein the alkenyl disulfone is used to form the polar disulfone-functionalized molecule according to reaction schemes (iiia) or (iiib):
- ##STR85## where R.sup.1, R.sup.2, R.sup.8, R.sup.9, R.sub.f.sup.1, R.sub.f.sup.2, Ar, X, Y, k, m, n, and p are as defined in claim 5, and R.sup.7 represents H, or C.sub.2r H.sub.r+1, r being an integer of 1 to 4.
Dependencies are inferred from the claim text.