Preparation of benzophenone imines

Details Preparation of benzophenone imines Preparation of benzophenone imines

1995-11-21

1997-10-21

O'Sullivan, Peter

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

Organic compounds

Amino nitrogen containing

C07C24902

Patent

active

056798555

ABSTRACT:
A process for preparing benzophenone imines of the general formula I ##STR1## where R.sup.1 to R.sup.6 are hydrogen, C.sub.1 -to C.sub.4 -alkoxy, C.sub.1 -to C.sub.2 -alkylamine or C.sub.2 -to C.sub.4 -dialkylamine, by reacting benzophenones of the general formula II ##STR2## where R.sup.1 to R.sup.6 have the abovementioned meanings, in liquid ammonia in the presence of oxides of the elements boron, aluminum, gallium, indium, silicon, germanium, tin, lead, phosphorus, arsenic, antimony, bismuth, scandium, yttrium, titanium, zirconium, vanadium, niobium, tantalum or mixtures thereof at from 50.degree. to 150.degree. C. and from 50 to 350 bar is described.

REFERENCES:
patent: 2533723 (1950-07-01), Dombrow
patent: 4083869 (1978-04-01), Isshiki et al.
patent: 4130586 (1978-12-01), Isshiki et al.
Verardo et al, Synthetic Communications, vol. 18 (1988), pp. 1501-1511.
Hayashi et al, Nippon Kagaku Kaishi (1973), pp. 1392-1396.
Mignonac, Comp. Rend., vol. 169, (1919), pp. 237-239.
Hayashi et al, Nippon Kagaku Kaishi (1974), p. 2216-2218.
Hayashi et al, Chemistry Letters (1976), pp. 205-206.

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