Derivatives of 2,2-bis-(3-aminophenyl)hexafluoropropane and process for the preparation of 2,2-bis-(3,4-diaminophenyl) hexafluoropropane

Abstract From the Canadian patent

Abstract, The invention relates to compounds of the formula wherein R1 is hydrogen or an acyl group in which a nonaromatic 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, 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-acylamidophenyl)-hexafluoropropane, under …