Process for the preparation of reaction products of 2,...

Details Process for the preparation of reaction products of 2,... Process for the preparation of reaction products of 2,...

C - Chemistry, Metallurgy

07

C

260/464.4, 260/5

C07C 205/26 (2006.01) C07C 209/18 (2006.01) C07C 211/54 (2006.01) C07C 303/00 (2006.01) C07C 307/00 (2006.01) C07C 309/00 (2006.01) C07C 309/63 (2006.01) C07C 309/72 (2006.01) C07C 311/00 (2006.01) C07C 323/34 (2006.01)

Patent

CA 1320966

23221-4452 Abstract A novel process is provided for synthesizing tetrasubstituted 2,2-bis(phenyl)hexafluoropropanes. Starting from hexafluorobisphenol A the first step can be either nitration to the 3,3'-dinitro compound, followed by introducing the 4,4'- hydroxyl groups substituted with suitable leaving groups, or vice versa. The intermediates thus obtained are suitable substrates for displacement of the derivatized hydroxyl groups by a variety of nucleophiles, leading to novel tetra substituted 2,2-bis- (phenyl)hexafluoropropanes, having nitro or amino groups in the 3- and 3'-position, and primary or secondary amine or mercaptan radicals in the 4-and 4'-position. These partly fluorinated aromatic compounds are valuable monomers for preparing polymers like polybenzimidazoles or polybenzothiazoles.

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