Synthesis of some new polycycles via diels-alder reaction and their chemical conversions

الملخص EN

The polycycles 2-(piperidinyl methanamide)-5-(3', 4'-methylenedioxy-phenyl)-8-aryl - 7, 9-dioxo-8-aza bicyclo [4.

3.

0] non-3-ene 5a-f were synthesized via Diels-Alder cycloaddition reaction of piperine 1 with N-arylmaleimides 4a-f, or with maleic anhydride 2, followed by reaction of the product 3 with amino benzene derivatives (ArNH2).

Some of the synthesized compounds were directed towards hydrolysis, reduction and dehydrogenation reactions to give the corresponding 6a-c, 7a, b, d and 8a, c, e derivatives, respectively.

The structure of the new synthesized compounds was established by elemental analysis and spectral data studies.