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...
Oxidative lactonization of C(sp3)-H bond in methyl aromatic alcohols enabled by proton-coupled electron transfer
作者:Shanyi Chen、Qihong Lai、Chao Liu、Hui Liu、Mingqiang Huang、Shunyou Cai
DOI:10.1007/s11426-022-1283-7
日期:2022.8
Direct functionalization of inert C(sp3)-H bonds in pharmaceutically significant compounds is very important in modern synthetic organic chemistry. In this article, we disclose a practical and efficient method for the oxidative lactonization of benzylic C(sp3)-H bonds enabled by the synergistic interactions of organic dye-type rose bengal, n-Bu4N·Br, O2 and Na2HPO4 under visible light irradiation.