Photoinduced Cross-Coupling of Aryl Iodides with Alkenes
作者:Yuliang Liu、Haoyu Li、Shunsuke Chiba
DOI:10.1021/acs.orglett.0c03935
日期:2021.1.15
A protocol for photoinduced cross-coupling of aryliodides having polar π-functional groups or elongated π-conjugation with alkenes has been developed. The radical cascade mechanism involving generation of aryl radicals via C–I bond homolysis of photoexcited aryliodides and their subsequent addition to alkenes is proposed. The method enables iodide-selective cross-coupling over other halogen leaving
SUBSTITUTED IMIDAZOLECARBOXYLATE DERIVATIVES AND THE USE THEREOF
申请人:CHENGDU MFS PHARMA. CO., LTD.
公开号:US20200369621A1
公开(公告)日:2020-11-26
A compound is shown in formula (I). The derivatives of the compound include a stereoisomer, a pharmaceutically acceptable salt, a solvate, a prodrug, a metabolite, a deuterated derivative. The compound is a structurally novel substituted imidazole formate derivative. Substituted imidazole formate derivatives are used in preparing a drug with sedative, hypnotic and/or anesthetic effects, as well as a drug that can control the state of epilepsy. The compound has a good inhibitory effect on the central nervous system, and provides a new option for clinical screening of and/or preparation of a drug with sedative, hypnotic and/or anesthetic effects and controlling the state of epilepsy.
The present invention is concerned with certain novel spiro substituted heterocylic ring derivatives. These compounds may be useful in the manufacture of pharmaceutical compositions for treating disorders mediated by lipoxygenases. They may also be useful in the manufacture of pharmaceutical formulations for the treatment of lipoxygenase-mediated disorders.
The first metal-free alkynylation/ringexpansion cascade process of alkenyl cyclobutanols with ethynylbenziodoxolones has been developed. A variety of synthetically valuable β-alkynylated cyclopentanones were prepared in moderate to good yields. Alkynyl cyclobutanols could also undergo this transformation, providing a new approach to substituted ene-yne-carbonyl compounds.
Iron-Promoted Difunctionalization of Alkenes by Phenylselenylation/1,2-Aryl Migration
作者:Ping Wu、Kaikai Wu、Liandi Wang、Zhengkun Yu
DOI:10.1021/acs.orglett.7b02751
日期:2017.10.6
Iron-promoted difunctionalization of α,α-diaryl and α-aryl-α-alkyl allylic alcohols has been efficiently achieved by means of N-(phenylseleno)phthalimide (N-PSP) under mild conditions. An in situ generated phenylselenium cation (PhSe+) was added to the olefinic C═C bond to initiate the regioselective phenylselenylation with concomitant 1,2-aryl migration, following a migration preference contrary to