已经探索了吲哚-2-甲酰胺与 2,3-环氧甲苯磺酸盐的碱介导[4+2]环化。该方案以非对映选择性方式以高产率提供 3-取代的吡嗪[1,2- a ]吲哚-1-酮,并且既不产生 4-取代的吡嗪[1,2- a ]吲哚-1-酮,也不产生四氢-1 H-无论远端环氧化物C3取代基是烷基还是芳基,或者环氧化物是顺式还是反式,都会生成[1,4]二氮杂[1,2- a ]吲哚-1-酮-配置。该反应通过用 2,3-环氧甲苯磺酸酯对吲哚支架进行 N-烷基化,同时进行 6-外选择性环氧化物开环反应,在一锅中进行。值得注意的是,该过程对于两种起始材料都具有化学和区域选择性。据我们所知,该过程代表了吲哚基二杂核亲核试剂与环氧化物基介电试剂一锅成环的第一个成功例子。
HETEROCYCLIC CARBOXYLIC ACID AMIDE LIGAND AND APPLICATIONS THEREOF IN COPPER CATALYZED COUPLING REACTION OF ARYL HALOGENO SUBSTITUTE
申请人:CE Pharm CO., LTD.
公开号:US20190127337A1
公开(公告)日:2019-05-02
Provided are a heterocyclic carboxylic acid amide ligand and applications thereof in a copper catalyzed coupling reaction. Specifically, provided are uses of a compound represented by formula (I), definitions of radical groups being described in the specifications. The compound represented by formula (I) can be used as the ligand in the copper catalyzed coupling reaction of the aryl halogeno substitute, and is used or catalyzing the coupling reaction for forming the aryl halogeno substitute having C—N, C—O, C—S and other bonds.
Cu(OAc)<sub>2</sub>-Triggered Cascade Reaction of Malonate-Tethered Acyl Oximes with Indoles, Indole-2-alcohols, and Indole-2-carboxamides
作者:Peng-Fei Mao、Li-Jin Zhou、An-Qi Zheng、Chun-Bao Miao、Hai-Tao Yang
DOI:10.1021/acs.orglett.9b00849
日期:2019.5.3
indole-2-carboxmides provides facile access to polysubstituted 3-pyrrolin-2-ones. The reaction features the generation of two adjacent electrophilic centers at the same time as cyclization to lactam. The subsequent double addition with nucleophiles followed by oxidation realizes the difunctionalization of the imine sp2-carbon and the adjacent α-sp3-carbon.
Synthesis of Indolo[2,3-<i>c</i>]quinolin-6(7<i>H</i>)-ones and Antimalarial Isoneocryptolepine. Computational Study on the Pd-Catalyzed Intramolecular C–H Arylation
The synthesis of variouslysubstituted indolo[2,3-c]quinolin-6(7H)-ones was developed via Pd-catalyzed intramolecular C–H arylation. This method highlights a strategy for preparing indoloquinoline precursors bearing versatile functional groups and provides a new approach for the synthesis of antimalarial isoneocryptolepine analogues. The plausible ring closure mechanism was examined with quantum chemical
通过Pd催化的分子内C–H芳基化反应,开发了各种取代的吲哚[2,3 - c ]喹啉-6(7 H)-ones的合成。该方法突出了制备带有多功能官能团的吲哚喹啉前体的策略,并为合成抗疟异异烯油菜碱类似物提供了新方法。通过量子化学计算研究了可能的闭环机理,推测是三角双锥体协同的金属化-去质子化过渡态。
One-pot synthesis of pyrrolo[1,2-a]quinoxalines
作者:Aiping Huang、Feng Liu、Chunjing Zhan、Yanli Liu、Chen Ma
DOI:10.1039/c1ob05936j
日期:——
A transition metal-free process for the regioselective synthesis of pyrrolo[1,2-a]quinoxalines under mild conditions in one-pot is described. The reaction afforded a variety of products in good to excellent yields. Indolo[1,2-a]quinoxalines were also synthesized from indole-2-carboxamides under the same conditions.
描述了在温和条件下在一锅中用于区域选择性合成吡咯并[1,2- a ]喹喔啉的无过渡金属工艺。该反应以良好至优异的产率提供了多种产物。在相同条件下,吲哚-2-羧酰胺也可以合成吲哚并[1,2- a ]喹喔啉。
Cu(OAc)<sub>2</sub>-Promoted Oxidative Cross-Dehydrogenative Coupling Reaction of α-Acylmethyl Malonates with Indole Derivatives to Access 3-Functionalized Indoles and Polycyclic Indoles
A Cu(OAc)2-promoted oxidative cross-dehydrogenative coupling reaction of α-acylmethyl malonates with indole derivatives was developed. In the case of indoles, the regioselective coupling products were formed through a sequential dehydrogenation–addition–dehydrogenation process. When a second nucleophilic center was located in the 2-position of indoles, further successive nucleophilic cyclization occurred