An Oxidant-Free Strategy for Indole Synthesis via Intramolecular C–C Bond Construction under Visible Light Irradiation: Cross-Coupling Hydrogen Evolution Reaction
We describe here an oxidant-free strategy to synthesize indoles, i.e., under visible-light irradiation (λ = 450 nm), catalytic amounts of an iridium(III) photosensitizer and cobaloxime catalyst transform various N-arylenamines exclusively into indoles. Our methodology affords indoles in good to excellent yields under mild reaction conditions and produces H2 as the only byproduct. Spectroscopic and
Iodide-Ion-Catalyzed Carbon-Carbon Bond-Forming Cross-Dehydrogenative Coupling for the Synthesis of Indole Derivatives
作者:Zhenhua Jia、Takashi Nagano、Xingshu Li、Albert S. C. Chan
DOI:10.1002/ejoc.201201585
日期:2013.2
nBu4NI-catalyzed intramolecular cross-dehydrogenativecoupling (CDC) reaction has been applied to the synthesis of 1H-indole derivatives. Intramolecular oxidative coupling of N-arylenamines proceeded in the presence of a catalytic amount of nBu4NI and tert-butyl hydroperoxide (TBHP) to afford the corresponding 1H-indole derivatives in good-to-excellent yields. A preliminary study of the synthesis of 3H-indole is also
Divergent C-H Annulation for Multifused N-Heterocycles: Regio- and Stereospecific Cyclizations of N-Alkynylindoles
作者:Khyarul Alam、Sung Won Hong、Kyung Hwan Oh、Jin Kyoon Park
DOI:10.1002/anie.201705514
日期:2017.10.16
N‐Alkynylindoles were divergently cyclized for the synthesis of multifused N‐heterocycles. An ortho‐aryl palladium species was added to the α position of an ynamine to generate (Z)‐6‐alkylidene/benzylidene‐6H‐isoindolo[2,1‐a]indoles, while Pt‐catalyzed β‐addition through π‐activation gave 5‐alkyl/arylindolo[2,1‐a]isoquinolines. Double cyclizations using PdCl2 and oxidant afforded bright yellow benzo[7
N-炔炔醇被发散地环化以合成多融合的N-杂环。一个邻位的芳基钯物种加入到一个ynamine的α位,以产生(ż)-6-亚烷基/亚苄基-6- ħ -isoindolo [2,1-一个]吲哚,而铂催化的β加成通过π-活化得到5-烷基/芳基吲哚并[2,1- a ]异喹啉。使用PdCl 2和氧化剂进行双环化可得到亮黄色的苯并[7,8]吲哚并ino [2,3,4,5- ija ]喹啉,其合成也通过不同的合成路线得到证明。
LYSOPHOSPHATIDIC ACID RECEPTOR ANTAGONISTS
申请人:Buckman Brad O.
公开号:US20130072449A1
公开(公告)日:2013-03-21
Compounds, methods of making such compounds, pharmaceutical compositions and medicaments comprising such compounds, and methods of using such compounds to treat, prevent or diagnose diseases, disorders, or conditions associated with one or more of the lysophosphatidic acid receptors are provided.