Die photochemische Tautomerisation eines cyclischen Amidins

The cyclic amidine group of the 8-amino-2,3,5,5a-tetrahydro-5,8a-propeno-6H,11H-pyrrolo3,4-g]-1-pyrindine ( 2 ) undergoes photochemical tautomerism. In this reaction the dihydropyridine group of a second molecule of 2 acts as a sensitizer.