Substituted 1,1,1-triaryl-2,2,2-trifluoroethanes and processes f

Details Substituted 1,1,1-triaryl-2,2,2-trifluoroethanes and processes f Substituted 1,1,1-triaryl-2,2,2-trifluoroethanes and processes f

1992-01-17

1994-08-02

Ivy, C. Warren

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

Organic compounds

Acyclic carbon bonded directly to three benzene rings or to...

C07C 1516

Patent

active

053347331

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: 4758380 (1988-07-01), Alston et al.
patent: 4990667 (1991-02-01), Burgoyne et al.

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