Photodecarboxylative cyclizations of ω-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 phthalimide give hydroxyphthalimidines in yields of 45-73%. (c) 2005 Elsevier Ltd. All rights reserved.