Substituted 1,1,1-triaryl-2,2,2-trifuoroethanes and processes fo

Details Substituted 1,1,1-triaryl-2,2,2-trifuoroethanes and processes fo Substituted 1,1,1-triaryl-2,2,2-trifuoroethanes and processes fo

1994-04-15

1999-01-19

Dees, Jose G.

Organic compounds -- part of the class 532-570 series

Organic compounds

Halogen containing

568 16, 568 34, 568 56, 568332, 568639, 564322, C07C 1908

Patent

active

058615407

ABSTRACT:
Synthetic procedures to tetraalkyls, tetraacids and dianhydrides substituted 1,1,1-triaryl-2,2,2-trifluoroethanes which comprises: (1) 1,1-bis(dialkylaryl)-1-aryl-2,2,2 -trifluoroethane, (2) 1,1-bis(dicarboxyaryl)-1-aryl-2,2,2-trifluoroethane or (3) cyclic dianhydride or diamine of 1,1-bis(dialkylaryl)-1-aryl-2,2,2-trifluoroethanes. The synthesis of (1) is accomplished by the condensation reaction of an aryltrifluoromethyl ketone with a dialkylaryl compound. The synthesis of (2) is accomplished by oxidation of (1). The synthesis dianhydride of (3) is accomplished by the conversion of (2) to its corresponding cyclic dianhydride. The synthesis of the diamine is accomplished by the similar reaction of an aryltrifluoromethyl ketone with aniline or alkyl substituted or disubstituted anilines. Also, other derivatives of the above are formed by nucleophilic displacement reactions.

REFERENCES:
patent: 4742152 (1988-05-01), Scola

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