Silver(I)‐Catalyzed Conia‐Ene Reaction: Synthesis of 3‐Pyrrolines
via
a 5‐
endo
‐
dig
Cyclization
摘要:
AbstractA novel method has been developed for the synthesis of 3‐pyrrolines from β‐ketopropargylamines via a 5‐endo‐dig carbocyclization. This transformation involves a silver‐catalyzed Conia‐ene type reaction tolerating broad substrate scope with good to excellent yields. Furthermore, this methodology has been extended for the construction of 2‐substituted pyrroles under base‐mediated conditions.magnified image
[EN] JAK KINASE MODULATING COMPOUNDS AND METHODS OF USE THEREOF<br/>[FR] COMPOSÉS MODULANT LES KINASES JAK ET PROCÉDÉS POUR LES UTILISER
申请人:AMBIT BIOSCIENCES CORP
公开号:WO2010002472A1
公开(公告)日:2010-01-07
Provided herein are pyrrolotriazine compounds for treatment of JAK kinase, including JAK2 kinase mediated diseases. Also provided are pharmaceutical compositions comprising the compounds and methods of using the compounds and compositions.
Ketopyrroles useful as ligands in organic iridium compositions
申请人:Chichak Kelly Scott
公开号:US20080027028A1
公开(公告)日:2008-01-31
The present invention provides novel ketopyrroles having structure XXIV
wherein R
2
is independently at each occurrence a deuterium atom, a halogen, a nitro group, an amino group, a C
3
-C
40
aromatic radical, a C
1
-C
50
aliphatic radical, or a C
3
-C
40
cyclcoaliphatic radical; “a” is an integer from 0 to 3; and X
1
and X
2
are independently at each occurrence a bromine atom, a hydroxy group, or the group OR
10
, and wherein the group R
10
is independently at each occurrence a deuterium atom, a halogen, a nitro group, an amino group, a C
3
-C
40
aromatic radical, a C
1
-C
50
aliphatic radical, or a C
3
-C
40
cyclcoaliphatic radical. Ketopyrroles XXIV are useful ligands for the preparation of Type (1) and Type (2) organic iridium compositions. In one aspect, the present invention provides deuterated analogs of XXIV. Organic iridium compositions are useful in the preparation optoelectronic devices, such as OLED devices and photovoltaic devices exhibiting enhanced performance characteristics.
A novel one-pot synthesis of 2-benzoylpyrroles from benzaldehydes
作者:Ratnesh Sharma、Mangilal Chouhan、Vipin A. Nair
DOI:10.1016/j.tetlet.2010.02.054
日期:2010.4
We herein report a novel one-pot reaction for benzoylation of pyrrole. The key step in the reaction is generation of di(1H-pyrrol-1-yl)zirconium(IV) chloride complex which reacts with benzaldehydes and methyl benzoates to give 2-benzoylpyrroles as the major product.
Aroylation of Electron-Rich Pyrroles under Minisci Reaction Conditions
作者:Joydev K. Laha、Mandeep Kaur Hunjan、Shalakha Hegde、Anjali Gupta
DOI:10.1021/acs.orglett.0c00041
日期:2020.2.21
The development of Minisci acylation on electron-rich pyrroles under silver-free neutral conditions has been reported featuring the regioselective monoacylation of (NH)-free pyrroles. Unlike conventional Minisci conditions, the avoidance of any acid that could result in the polymerization of pyrroles was the key to success. The umpolung reactivity of the nucleophilic acyl radical, generated in situ
5]triazepin-4(5H)-ones have been synthesized at our laboratory as bioisosters of biologically active 1-aryl-2,3-benzodiazepine-4-ones. The efficient synthetic route described applies the synthesis of 2-(2-aroylpyrrol-1-yl)acyl hydrazides followed by ring closure under acidic conditions. The N(3)-unsubstituted title compounds thus obtained can optionally be N-alkylated rendering the preparation of variously
一个新的家庭的代表,1-芳基-3- ħ吡咯并[2,1- d ] [1,2,5]三氮杂-4(5 ħ) -酮在有我们的实验室中合成的生物活性的bioisosters 1-芳基-2,3-苯并二氮杂-4-酮。所述的有效合成路线适用于合成2-(2-芳酰基吡咯-1-基)酰肼,然后在酸性条件下闭环。所述Ñ由此获得的可任选地(3)未被取代的标题化合物Ñ烷基化渲染各种取代的衍生物可能的制备。还详细讨论了新协议的范围和局限性以及一些有趣的副反应。