INTRAMOLECULAR WITTING-HORNER REACTION OF DIMETHYL 2-(o-ACYLBENZOYL)-1,2-DIHYDROISOQUINOLINE-1-PHOSPHONATE: FACILE SYNTHESIS OF AN ISOQUINOLINE ALKALOID SKELETON

Article abstract of DOI:10.1246/cl.1982.349

Dimethyl 2-(o-acylbenzoyl)-1,2-dihydroisoquinoline-1-phosphonates (3) were prepared from isoquinoline, o-acylbenzoyl chloride, and trimethyl phosphite.Intramolecular Witting-Horner reaction of 3 with LDA afforded good yields of 13-substituted 8H-dibenzo