Photodecarboxylative cyclizations of omega-phthalimido-ortho-phenoxy carboxylates

摘要

omega-Phthalimido-ortho-phenoxy carboxylates efficiently undergo photodecarboxylative cyclizations in reasonable to good yields of 12-75%.Although the photocyclization efficiency decreases with increasing carbon chain lengths,target ring sizes up to 15 are successfully realized.Likewise,intermolecular photodecarboxylative additions of omega-phenoxy carboxylates to N-methyl phthal-imide give hydroxyphthalimidines in yields of 45-73%.