Investigation of intramolecular and intermolecular [2+2] photo addition reactions of maleic anhdyride, maleimide and 3,4,5,6-tetrahydrophthalic anhydride

ABSTRACT [2+2] Photocycloaddition reactions were carried out between unsaturated cyclic imides, anhydrides and molecules whose structure has olephinic and acetilenic bound. Purpose of this, maleic anhydride, maleimide, 3,4,5,6-tetrahydrophthalic anhydride, allyl alcohol, propargyl alcohol, cis-2-butene-l,4-diol, allyl amine and cyclohexene were choosen as starting materials. In the intermolecular [2+2] photocycloaddition reactions, starting materials were solved in acetonitrile, then was irradiated under an atmosphere of nitrogen at room temparature in 400 mL quartz immersion well photoreactor which has high pressure mercury lamp. In the intramolecular [2+2] photocycloaddition reaction first of all, molecule was synthesized which is useful for this step. Synthesised starting material was solved in acetonitrile and was irradiated under atmosphere of nitrogen at room temparature. Structures of obtained products were identified by FT-IR, H-NMR, C-NMR and mass spectroscopy. Keywords; Photocycloaddition, intramolecular photocycloaddition, intermolecular photocycloaddition, unsaturated cyclic anhydride, unsaturated cyclic imide. II