INTRAMOLECULAR WITTIG-HORNER REACTION OF DIMETHYL 2-(<i>o</i>-ACYLBENZOYL)-l, 2-DIHYDROISOQUINOLINE-l-PHOSPHONATE : FACILE SYNTHESIS OF AN ISOQUINOLINE ALKALOID SKELETON
作者:Kin-ya Akiba、Yoshio Negishi、Naoki Inamoto
DOI:10.1246/cl.1982.349
日期:1982.3.5
Dimethyl 2-(o-acylbenzoyl)-1,2-dihydroisoquinoline-1-phosphonates (3) were prepared from isoquinoline, o-acylbenzoyl chloride, and trimethylphosphite. Intramolecular Wittig-Horner reaction of 3 with LDA afforded good yields of 13-substituted 8H-dibenzo [a, g]quinolizin-8-ones (4) which bear an isoquinoline alkaloid skeleton.
Preparation of 13-Substituted 8<i>H</i>-Dibenzo[<i>a</i>,<i>g</i>]quinolizin-8-ones by Intramolecular Wittig-Horner Reaction of Dialkyl 2-(<i>o</i>-Acylbenzoyl)-1,2-dihydro-1-isoquinolylphosphonates
作者:Kin-ya Akiba、Yoshio Negishi、Naoki Inamoto
DOI:10.1246/bcsj.57.2188
日期:1984.8
Dialkyl 2-(o-acylbenzoyl)-1,2-dihydro-1-isoquinolyl-phosphonates (1) were prepared by reactions of isoquinoline, o-acylbenzoyl chloride, and trialkylphosphites. Treatment of 1 with lithium diisopr...