An efficient and versatile ‘green’ catalytic system for the Buchwald–Hartwig cross-coupling reaction in water is reported. In an aqueous micellar medium, the combination of t-BuXPhos with [(cinnamyl)PdCl]2 showed excellent performance for coupling arylbromides or chlorides with a large set of amines, amides, ureas and carbamates. The method is functional-group tolerant, proceeds smoothly (30 to 50
An Effective Heterogeneous Copper Catalyst System for C–N
Coupling and Its Application in the Preparation of
2-Methyl-4-methoxydiphenylamine (MMDPA)
作者:Manna Huang、Zhou Yi、Yiqian Wan、Xinhai Zhu
DOI:10.1055/s-0037-1609578
日期:2018.10
-1H-pyrrole-2-carbohydrazide (PSAP) has been established for Ullmann type C–Ncoupling based on the homogeneous catalyst system N′,N′-diphenyl-1H-pyrrole-2-carbohydrazide/CuI. This heterogeneous catalyst system maintained the catalytic effectiveness of the homogeneous catalyst. A variety of functionalized aryl bromides can be efficiently aminated with aryl amines and aliphatic amines with high selectivity
Room-Temperature CuI-Catalyzed Amination of Aryl Iodides and Aryl Bromides
作者:Xiaomei Ding、Manna Huang、Zhou Yi、Dongchen Du、Xinhai Zhu、Yiqian Wan
DOI:10.1021/acs.joc.7b00290
日期:2017.5.19
general and effective CuI/N′,N′-diaryl-1H-pyrrole-2-carbohydrazide catalyst system was developed for the amination of aryliodides and bromides at room temperature with good chemoselectivity between −OH and −NH2 groups. Only 5 mol % of CuI and ligands was needed in this protocol to effect the amination of various arylbromides and aryliodides with a wide range of aliphatic and aryl amines (1.3 equiv)
Mixed er-NHC/phosphine Pd(<scp>ii</scp>) complexes and their catalytic activity in the Buchwald–Hartwig reaction under solvent-free conditions
作者:Alexandra A. Ageshina、Grigorii K. Sterligov、Sergey A. Rzhevskiy、Maxim A. Topchiy、Gleb A. Chesnokov、Pavel S. Gribanov、Elizaveta K. Melnikova、Mikhail S. Nechaev、Andrey F. Asachenko、Maxim V. Bermeshev
DOI:10.1039/c9dt00216b
日期:——
A series of novel (NHC)PdCl2-PR3 complexes were synthesized and fully characterized by 1H, 13C, 31P NMR and FT-IR spectroscopy. These complexes showed high catalytic activity toward solvent-free Buchwald–Hartwig amination. Both primary and secondary amines were efficiently utilized under the same reaction conditions. The solvent-free synthesis of valuable N-aryl carbazoles and similar N-heterocyclic
合成了一系列新颖的(NHC)PdCl 2 -PR 3配合物,并通过1 H,13 C,31 P NMR和FT-IR光谱进行了全面表征。这些配合物对无溶剂的布赫瓦尔德-哈特维格胺胺化显示出很高的催化活性。在相同的反应条件下,伯胺和仲胺均得到有效利用。描述了有价值的N-芳基咔唑和类似的N-杂环体系的无溶剂合成。
QUINAZOLINONES AS PROLYL HYDROXYLASE INHIBITORS
申请人:Bembenek Scott D.
公开号:US20100204226A1
公开(公告)日:2010-08-12
Quinazolinone compounds of formula (I) are described,
which are useful as prolyl hydroxylase inhibitors. Such compounds may be used in pharmaceutical compositions and methods for the treatment of disease states, disorders, and conditions mediated by prolyl hydroxylase activity. Thus, the compounds may be administered to treat, e.g., anemia, vascular disorders, metabolic disorders, and wound healing.