Rapid synthesis of quinoline-4-carboxylic acid derivatives from arylimines and 2-substituted acrylates or acrylamides under indium(iii) chloride and microwave activations. Scope and limitations of the reaction
quinoline-4-carboxylic acid derivatives has been achieved by reaction of 2-methoxy acrylates or acrylamides with N-arylbenzaldimines in acetonitrile under InCl3 catalysis and microwave irradiation. Isolated yields up to 57% within 3 min have been obtained. The Lewis acid and the microwave activation appeared as crucial parameters for the reaction. The role of indium chloride and ytterbium triflate was specified
在InCl3催化和微波辐射下,2-甲氧基丙烯酸酯或丙烯酰胺与N-芳基苯甲二胺在乙腈中的反应已实现了喹啉-4-羧酸衍生物的快速合成。在3分钟内获得了高达57%的分离产率。路易斯酸和微波活化似乎是反应的关键参数。使用13 C NMR数据和模型理论研究确定了氯化铟和三氟甲磺酸的作用。
[EN] SUBSTITUTED PIPERIDINES AS GPR119 MODULATORS FOR THE TREATMENT OF METABOLIC DISORDERS<br/>[FR] PIPÉRIDINES SUBSTITUÉES À TITRE DE MODULATEURS DE GPR119 POUR LE TRAITEMENT DES TROUBLES MÉTABOLIQUES
申请人:BOEHRINGER INGELHEIM INT
公开号:WO2012168315A1
公开(公告)日:2012-12-13
The present invention relates to compounds of general formula (I), wherein R1, Lp, HetAr, Ar, and n are as defined in the application, which have valuable pharmacological properties, and in particular bind to the GPR119 receptor and modulate its activity.
NEW COMPOUNDS, PHARMACEUTICAL COMPOSITIONS AND USES THEREOF
申请人:HECKEL Armin
公开号:US20130143892A1
公开(公告)日:2013-06-06
The present invention relates to compounds of general formula I,
wherein R
1
, L
P
, HetAr, Ar, and n are as defined in the application, which have valuable pharmacological properties, and in particular bind to the GPR119 receptor and modulate its activity.
Visible‐Light‐Mediated Heterocycle Functionalization via Geometrically Interrupted [2+2] Cycloaddition
作者:Mihai V. Popescu、Aroonroj Mekereeya、Juan V. Alegre‐Requena、Robert S. Paton、Martin D. Smith
DOI:10.1002/anie.202009704
日期:2020.12.14
cyclization in the triplet excited state to yield a 1,4‐diradical; intersystem crossing leads preferentially to the closed shell singlet zwitterion. This is geometrically restricted from undergoing recombination to yield a cyclobutane by the planarity of the amide substituent. A prototropic shift leads to the observed bicyclic products in what can be viewed as an interrupted [2+2] cycloaddition.
The structures of the u.v. chromophoric fragments of the antitumour antibiotics, PD 114,759 and PD 115,028
作者:John H. Wilton、Gerard C. Hokanson、James C. French
DOI:10.1039/c39850000919
日期:——
Methanolysis of the new and very potent antitumourantibioticsPD 114,759 and PD 115,028 afforded the 3′-and 4′-N-(2-methoxypropenoyl)4,5-dimethoxyanthranilate esters of methyl 2′-deoxy-L-fucopyranoside.