New fused lactones from indolizinediones via N-acyliminium ions
摘要:
N-Arylmethylphthalimidine-3-carboxylates 3 are good precursors for the synthesis of ketones 5a,b or enols 6c-e which upon acidic treatment led to lactones 7 via an N-acyliminium ion. (C) 1998 Elsevier Science Ltd. All rights reserved.
Synthesis of Phthalimidine-3-carboxylate and Benzopyrroloindolizine from N-(Pyrrol-2-yl) Phthalimidine-3-Carboxylate
摘要:
During the synthesis of the new benzo[a]pyrrolo[2,3-f]indolizine system an improved method for the synthesis of phthalimidine-3-carboxylate is reported.