Regioselectivity of pyridine ring migration during triplet-sensitized di-.pi.-methane photorearrangements of 5,8-dihydro-5,8-methanoisoquinoline derivatives. The case for heteroatom control
Regioselectivity of pyridine ring migration during triplet-sensitized di-.pi.-methane photorearrangements of 5,8-dihydro-5,8-methanoisoquinoline derivatives. The case for heteroatom control