| 摘要 |
The invention relates to compounds of the formula <IMAGE> wherein R1 is hydrogen or an acyl group in which a non-aromatic hydrocarbon group of 1 to 6 carbon atoms is attached to the CO-group and R2 is H or NO2, if R1 is an acyl group, or is NO2, if R1 is hydrogen. The invention further relates to a process for the production of 2,2-bis-(3,4-diaminophenyl)-hexafluoropropane of the formula <IMAGE> which comprises (a) acylating 2,2-bis-(3-aminophenyl)-hexafluoropropane, under conditions conventional for acylations, to yield a 2,2-bis-(3-acylamidophenyl)-hexafluoropropane, the acyl group of which is free from aromatic groups, (b) nitrating the 2,2-bis-(3-acylamidophenly)-hexafluoropropane, under conditions conventional for nitrations, to yield 2,2-bis-(3-acylamido-4-nitrophenyl)-hexafluoropropane, (c) deacylating the 2,2-bis-(3-acylamido-4-nitrophenyl)-hexafluoropropane, under conditions conventional for deacylations, to yield 2,2-bis-(3-amino-4-nitrophenyl)-hexafluoropropane, (d) reducing this compound, under conditions conventional for the reduction of nitro compounds, to yield 2,2-bis-(3,4-diaminophenyl)-hexafluoropropane, and (e) isolating this compound or subjecting it to a purificaton by converting it into a solution of one of its salts, adsorbing contaminations at an adsorption agent and recipitating the 2,2-bis-(3,4-diaminophenyl)-hexafluoropropane by addition of a base.
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