established for the preparation of phenothiazines in good yields by two routes, starting from 2-iodoanilines and 2-bromobenzenethiol and from aryl ortho-dihalides and o-aminobenzenethiols, by conducting the reaction at 90 °C in poly(ethylene glycol)-100 (PEG-100). In addition, the catalyst system was useful for promoting direct arylation of various aryl amines, aliphatic amines, and aqueous ammonia. The simple
Novel Compounds for the Treatment of Diseases Associated with Amyloid or Amyloid-Like Proteins
申请人:Kroth Heiko
公开号:US20110280808A1
公开(公告)日:2011-11-17
The present invention relates to novel compounds that can be employed in the treatment of a group of disorders and abnormalities associated with amyloid protein, such as Alzheimer's disease, and of diseases or conditions associated with amyloid-like proteins. The compounds of the present invention can also be used in the treatment of ocular diseases associated with pathological abnormalities/changes in the tissues of the visual system. The present invention further relates to pharmaceutical compositions comprising these compounds and to the use of these compounds for the preparation of medicaments for treating or preventing diseases or conditions associated with amyloid and/or amyloid-like proteins. A method of treating or preventing diseases or conditions associated with amyloid and/or amyloid-like proteins is also disclosed.
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)
Pyrrole-2-carbohydrazides as Ligands for Cu-Catalyzed Amination of Aryl Halides with Amines in Pure Water
作者:Jianwei Xie、Xinhai Zhu、Manna Huang、Fei Meng、Weiwei Chen、Yiqian Wan
DOI:10.1002/ejoc.201000361
日期:2010.6
Pyrrole-2-carbohydrazides were synthesized and found to be novel and efficient ligands for the Cu-catalyzedamination of arylhalides with amines in purewater with high yields. A variety of aryl bromides or iodides could be aminated, promoted by the CuI/N′-phenyl-1H-pyrrole-2-carbohydrazide (L13) system, under microwave irradiation or conventional heating without the protection by an inert gas.
Pyrrole-2-carbohydrazides 被合成并发现是新的和有效的配体,用于在纯水中以高产率对芳基卤化物与胺进行 Cu 催化胺化。CuI/N'-苯基-1H-吡咯-2-碳酰肼(L13)体系在微波辐射或常规加热下,可以在没有惰性气体保护的情况下,胺化各种芳基溴化物或碘化物。
Reductive Molybdenum-Catalyzed Direct Amination of Boronic Acids with Nitro Compounds
作者:Samuel Suárez-Pantiga、Raquel Hernández-Ruiz、Cintia Virumbrales、María R. Pedrosa、Roberto Sanz
DOI:10.1002/anie.201812806
日期:2019.2.11
The synthesis of aromatic amines is of utmost importance in a wide range of chemical contexts. We report a direct amination of boronic acids with nitro compounds to yield (hetero)aryl amines. The novel combination of a dioxomolybdenum(VI) catalyst and triphenylphosphine as inexpensive reductant has revealed to be decisive to achieve this new C−N coupling. Our methodology has proven to be scalable,