Polysubstituted indoles are prevalent in pharmaceuticals, agrochemicals, and organic materials. Presented herein is the fact that polyfunctionalized indoles can be efficiently constructed from easily accessible oxime esters and aryl iodides, involving a palladium/norbornene synergistic synthesis. The reaction is enabled by a unique class of electrophiles in palladium/norbornene cooperative catalysis
On the way to biodegradable poly(hydroxy butyrate) from propylene oxide and carbon monoxide via β-butyrolactone: Multisite catalysis with newly designed chiral indole-imino chromium(III) complexes
ligand families and on their chromium(III) complexes as enantioselective catalysts for the conversion of propylene oxide and carbon monoxide to enantioenriched β-butyrolactone, the key monomer for the production of PHB by ring-opening polymerization. The enantioselective carbonylation catalysts are based on new chiral tri- and tetradentate [N2O] and [N4] chromium(III) complexes containing chiral indolaldimine
Exploration of Forbidden Povarov Processes as a Source of Unexpected Reactivity: A Multicomponent Mannich-Ritter Transformation
作者:Sara Preciado、Esther Vicente-García、Salomé Llabrés、F. Javier Luque、Rodolfo Lavilla
DOI:10.1002/anie.201202927
日期:2012.7.9
geometrically or electronically restricted imines for Povarov‐type processes does not afford the anti‐Bredt tetrahydroquinolines, but leads instead to highly functionalized structures through novel reaction pathways (see picture; LA=Lewis acid). The exploration of “forbidden” routes constitutes a valuable approach in the search for new multicomponent reactions.
当一扇门关闭时,一个窗户就会打开!在Povarov型工艺中使用受几何或电子限制的亚胺并不能提供抗Bredt四氢喹啉,而是通过新颖的反应途径获得高度官能化的结构(参见图片; LA =路易斯酸)。探索“禁止”路线是寻找新的多组分反应的一种有价值的方法。
One-Pot Synthesis of Furo[3,4-<i>c</i>]indolo[2,1-<i>a</i>]isoquinolines through Rh(III)-Catalyzed Cascade Reactions of 2-Phenylindoles with 4-Hydroxy-2-alkynoates
作者:Yihao Liu、Zi Yang、Remi Chauvin、Wei Fu、Zhenyu Yao、Lianhui Wang、Xiuling Cui
DOI:10.1021/acs.orglett.0c01744
日期:2020.7.2
efficient and regioselective synthesis of fused polycyclic furo[3,4-c]indolo[2,1-a]isoquinolines through Rh(III)-catalyzed cascade C–H activation/annulation/lactonization of 2-arylindoles and 4-hydroxy-2-alkynoates has been developed. This cascade reaction displays high step economy and efficiency and tolerates various functional groups. The titled polycyclic furo[3,4-c]indolo[2,1-a]isoquinolines exhibit
通过Rh(III)催化2-芳基吲哚和4-羟基-吲哚的级联C-H活化/环化/内酯化反应,可以高效,区域选择性地合成稠合的多环呋喃并[3,4- c ]吲哚并[ 2,1- a ]异喹啉。已经开发了2-链烷酸酯。该级联反应显示出高的步骤经济性和效率,并且可以耐受各种官能团。标题为多环呋喃并[3,4- c ]吲哚并[2,1- a ]异喹啉表现出荧光发射。