Solvent exchange procedure for preparing diaminophenylindane

Details Solvent exchange procedure for preparing diaminophenylindane Solvent exchange procedure for preparing diaminophenylindane

C - Chemistry, Metallurgy

07

C

260/595.8

C07C 87/64 (1985.01)

Patent

CA 1207795

SOLVENT EXCHANGE PROCEDURE FOR PREPARING DIAMINOPHENYLINDANE Abstract of the Disclosure After a mixture of 5(6)-nitro-1-(4'-nitrophenyl)-1,3,3-trimethyl- indane is prepared in methylene chloride, water is charged to the solution and methylene chloride is azeotropically distilled. The dinitrophenylindane is then reduced with iron via a Béchamp reduction to give a mixture of 5(6)-amino-1-(4'-aminophenyl)-1,3,3 trimethyl- indane. This diamine is useful as a curing agent for epoxy resins and as an intermediate in making polyimides with good high temperature proper- ties.

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