Benzophenone derivatives

Benzophenone derivatives are produced which have the formula I wherein R1 signifies hydrogen, nitro, halogen or trifluoromethyl; R2 represents hydrogen or halogen; R3, R4 and R5 are the same or different and signify hydrogen or lower alkyl; R6 and R7 each represent lower alkyl or together with the nitrogen atom form a morpholino, 4-(lower alkyl)-1-piperazinyl, 1-pyrrolidinyl or piperidino group, A signifies an alkylene group with 2 to 8 C atoms and Y represents oxygen or a group R8 and R9 each signifying lower alkyl or together signifying lower alkylene.