Process for preparing polyfunctional compounds
AssigneePolaroid Corporation
InventorsHoward C. Haas, Robert D. Moreau
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Abstract
A process for preparing polyfunctional methylene-bridged compounds is disclosed. A difunctional methylene-bridged compound having acidic protons and having the formula X--CH.sub.2 --X is reacted with an alkali metal in the presence of a disubstituted formamide to provide a methylene-bridged polyfunctional compound having the formula ##STR1## wherein X is an electron-withdrawing group such as --CONH.sub.2, --COOR or --SO.sub.2 R where R is alkyl. The polyfunctional compounds prepared by the process of the present invention are useful in the production of metal complexing or sequestering agents, acidulents, cross-linking agents for polymeric reactions and in applications where a polyfunctional compound is desirably employed.
Claims14
A process for preparing a polyfunctional methylene-bridged compound which comprises reacting a difunctional methylene-bridged compound having the formula X--CH.sub.2 --X, wherein each X is selected from the group consisting of --CONH.sub.2, --COOR where R is alkyl and --SO.sub.2 R where R is alkyl, with an alkali metal in the presence of a disubstituted formamide having the formula ##STR8## where each R.sup.1 is alkyl or together both R.sup.1 groups complete a heterocyclic moiety;
- and acidifying the resulting reaction mixture, thereby to provide a polyfunctional compound having the formula ##STR9## where each X group has the meaning previously ascribed.
Dependencies are inferred from the claim text.