81750-89-2Relevant academic research and scientific papers
Preparation of 13-Substituted 8H-Dibenzoquinolizin-8-ones by Intramolecular Wittig-Horner Reaction of Dialkyl 2-(o-Acylbenzoyl)-1,2-dihydro-1-isoquinolylphosphonates
Akiba, Kin-ya,Negishi, Yoshio,Inamoto, Naoki
, p. 2188 - 2192 (2007/10/02)
Dialkyl 2-(o-acylbenzoyl)-1,2-dihydro-1-isoquinolyl-phosphonates (1) were prepared by reactions of isoquinoline, o-acylbenzoyl chloride, and trialkyl phosphites.Treatment of 1 with lithium diisopropylamide gave 13-substituted 8H-dibenzoquinolizin-8-ones by intramolecular Wittig-Horner reaction.Especially, 13-alkoxy and dimethylamino derivatives were obtained in good yields.A similar reaction of dimethyl 1--1,2-dihydro-2-quinolylphosphonate was also described.
INTRAMOLECULAR WITTING-HORNER REACTION OF DIMETHYL 2-(o-ACYLBENZOYL)-1,2-DIHYDROISOQUINOLINE-1-PHOSPHONATE: FACILE SYNTHESIS OF AN ISOQUINOLINE ALKALOID SKELETON
Akiba, Kin-ya,Negishi, Yoshio,Inamoto, Naoki
, p. 349 - 350 (2007/10/02)
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-dibenzoa
