Selectfluor-induced C(sp<sup>2</sup>)–O coupling reaction of <i>N</i>-substituted anilines with hydroxylamine derivatives
作者:Bin Sun、Shi Yin、Xiaohui Zhuang、Can Jin、Weike Su
DOI:10.1039/c8ob01348a
日期:——
N-hydroxyphthalimide or N-hydroxymaleimide without any metal catalyst. A variety of N-aryloxyimide derivatives were prepared from N-acyl or sulfonyl anilines in moderate to excellent yields with good functional-group tolerance under mild conditions, which are of great interest in the field of phenol or benzofuran derivative synthesis. Besides, the method is effective on the gram scale, which highlights the practicality
The present invention is directed to compounds of formula I and pharmaceutically acceptable salts, esters, and prodrugs thereof which are inhibitors of JAK kinase. The present invention is also directed to intermediates used in making such compounds, the preparation of such a compound, pharmaceutical compositions containing such a compound, methods of inhibition JAK kinase activity, methods of inhibition the platelet aggregation, and methods to prevent or treat a number of conditions mediated at least in part by JAK kinase activity, such as undesired thrombosis and Non Hodgkin's Lymphoma.
Substrate scope in the copper-mediated construction of bis-oxindoles via a double C–H/Ar–H coupling process
作者:Pauline Drouhin、Timothy E. Hurst、Adrian C. Whitwood、Richard J.K. Taylor
DOI:10.1016/j.tet.2015.02.060
日期:2015.9
The synthesis of bis-oxindoles via the copper(II)-mediated double cyclisation of linear bis-anilides is described. Cu(OAc)(2)center dot H2O was identified as an efficient and inexpensive catalyst for this process. In contrast to previous methods, which rely on the synthesis of the central core from existing oxindole building blocks, this new approach focusses on concurrent formation of both oxindole rings from a simple linear precursor, allowing the formation of bis-oxindoles containing a diverse range of cyclic and acyclic linkers using a single synthetic method. (C) 2015 Elsevier Ltd. All rights reserved.
Norton; Livermore, Chemische Berichte, 1887, vol. 20, p. 2273