Single-stage process for producing bis-(amino-...

Details Single-stage process for producing bis-(amino-... Single-stage process for producing bis-(amino-...

C - Chemistry, Metallurgy

07

C

260/597.8

C07C 209/78 (2006.01)

Patent

CA 1242217

Single-stage process for producing bis-(amino- nitrophenyl)-methane Abstract Bis-(amino-nitrophenyl)-methane can be produced in one stage with an approximately quantitative yield by condensing o-nitraniline and formaldehyde in water at a temperature of between 20° and 40°C in the presence of sulfuric acid, and subsequently rearranging the formed methylene-bis-(o-nitraniline) by treatment of the reaction mixture at a temperature of between 90° and 100°C.

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