[EN] HETEROCYCLE SUBSTITUTED KETONE DERIVATIVE, AND COMPOSITION AND MEDICINAL USE THEREOF [FR] DÉRIVÉ DE CÉTONE SUBSTITUÉ PAR UN HÉTÉROCYCLE, ET COMPOSITION ET SON UTILISATION MÉDICINALE [ZH] 杂环取代的甲酮类衍生物、其组合物及医药上的用途
<sup><i>t</i></sup>BuOK-Promoted Cyclization of Imines with Aryl Halides
作者:Ya-Wei Li、Hong-Xing Zheng、Bo Yang、Xiang-Huan Shan、Jian-Ping Qu、Yan-Biao Kang
DOI:10.1021/acs.orglett.0c01615
日期:2020.6.5
A transition-metal-free indole synthesis using radical coupling of 2-halotoluenes and imines via the later-stage C–N bond construction was reported for the first time. It includes an aminyl radical generation by C–H cleaving addition of 2-halotoluenes to imines via the carbanion radical relay and an intramolecular coupling of aryl halides with aminyl radicals. One standard condition can be used for
Phenanthroline-<i><sup>t</sup></i>BuOK Promoted Intramolecular C–H Arylation of Indoles with ArI under Transition-Metal-Free Conditions
作者:Xiang-Huan Shan、Bo Yang、Hong-Xing Zheng、Jian-Ping Qu、Yan-Biao Kang
DOI:10.1021/acs.orglett.8b03449
日期:2018.12.21
variety of substituted 6H-isoindolo [2, 1-a] indoles were prepared by a simple and efficient intramolecular cyclization using 1,10-phenanthroline in the presence of potassium tert-butoxide and chlorobenzene. This strategy provides a fast and versatile access to isoindolo[2,1-a]indole derivatives for the synthesis of pharmaceuticals and organic electroluminescent (EL) materials.
已经开发出第一个实例,菲咯啉t BuOK促进了N-(2-碘苄基)吲哚的分子内自由基C–H芳基化,而没有过渡金属的参与。在叔丁醇钾和氯苯存在下,使用1,10-菲咯啉通过简单有效的分子内环化反应制备了多种取代的6 H-异吲哚并[2,1-a]吲哚。该策略为异吲哚并[2,1- a ]吲哚衍生物的合成提供了快速而通用的途径,用于合成药物和有机电致发光(EL)材料。
Tricyclic compounds
申请人:SPOFA, spojene podniky pro zdravotnickou vyrobu
公开号:US04431808A1
公开(公告)日:1984-02-14
A technique is described for the preparation of a wide variety of basic derivatives of linearly condensed tricyclic systems formed by two external benzene nuclei and a 7-membered central ring having 2 chalcogen atoms as hetero atoms. Derivatives of 11H-dibenzo(b,e)-1,4-dioxepin are obtained when the chalcogens are both oxygen atoms; derivatives of 11H-dibenzo(b,f)-1,4-dithiepin are obtained when the chalcogens are both sulfur atoms; derivatives of 6H-dibenz(b,e)-1,4-oxathiepin and 11H-dibenz(b,f)-1,4-oxathiepin are obtained with combinations of sulfur and oxygen atoms as chalcogens.
for the construction of n-membered (n>3) N-heterocycles, rely upon two chemical operations by involving sequential nucleophilic and electrophilic C-N bond formations. Here, we report a highly efficient cascade of alkyne insertion/C-H activation/amination for the rapid preparation of a myriad of tricyclic indoles, in a single-step transformation, by using bifunctional secondary hydroxylamines. Noteworthy
Synthesis of Ring-Fused Oxazolo- and Pyrazoloisoquinolinones by a One-Pot Pd-Catalyzed Carboxamidation and Aldol-Type Condensation Cascade Process
作者:Gagan Chouhan、Howard Alper
DOI:10.1021/jo9010574
日期:2009.8.21
three-component cascade process is described for the synthesis of ring-fused oxazolo- and pyrazoloisoquinolinones by a one-pot carboxamidation/aldol-type condensation reaction. The cascade process involves Pd-catalyzed carboxamidation of an aryl halide/active methylene compound with oxazolidinone or pyrazolidinone, and subsequent intramolecular base-catalyzed cyclization/dehydration through an aldol-type