(7-Dialkylamino-3-coumarinyl)pyrazolines – new effective push-pull photogenerators of acidity

Abstract (7-Dialkylamino-3-coumarinyl)pyrazolines and their julolidine analog have been synthesized and proved as new effective photogenerators of acidity. Having D-π-linker −A conjugated system of push-pull type these compounds possess intensive absorption in visible region of electronic spectra, high photosensitivity and undergo photodehydrogenation with proton elimination in the presence of CCl 4 or C 2 Cl 6 with a high speed.