Lewis Base-Promoted Ring-Opening 1,3-Dioxygenation of Unactivated Cyclopropanes Using a Hypervalent Iodine Reagent
作者:Matthew H. Gieuw、Zhihai Ke、Ying-Yeung Yeung
DOI:10.1002/anie.201713422
日期:2018.3.26
A facile and effective system has been developed for the regio‐ and chemoselective ring‐opening/electrophilic functionalization of cyclopropanes through C−C bond activation by [bis(trifluoroacetoxy)iodo]benzene with the aid of the Lewis basic promoter p‐toluenesulfonamide. The p‐toluenesulfonamide‐promoted system works well for a wide range of cyclopropanes, resulting in the formation of 1,3‐diol products
Reductive Cyclopropanations Catalyzed by Dinuclear Nickel Complexes
作者:You-Yun Zhou、Christopher Uyeda
DOI:10.1002/anie.201511271
日期:2016.2.24
Dinuclear Ni complexes supported by naphthyridine‐diimine (NDI) ligands catalyze the reductive cyclopropanation of alkenes with CH2Cl2 as the methylene source. The use of mild terminal reductants (Zn or Et2Zn) confers significant functional‐group tolerance, and the catalyst accommodates structurally and electronically diverse alkenes. Mononickel catalysts bearing related N chelates afford comparatively
The present invention relates to 4-oxo-1,3,8-triaza-spiro[4.5]decanes which are useful as Kv1.5 potassium channel inhibitors providing atrial-selective antiarrhythmic activity. The present invention further relates to compositions and methods for treating atrial-selective antiarrhythmia.
[EN] BENZIMIDAZOLYL-METHYL UREA DERIVATIVES AS ALX RECEPTOR AGONISTS<br/>[FR] DÉRIVÉS DE BENZIMIDAZOLYL-MÉTHYLURÉE EN TANT QU'AGONISTES DU RÉCEPTEUR ALX
申请人:ACTELION PHARMACEUTICALS LTD
公开号:WO2015019325A1
公开(公告)日:2015-02-12
The present invention relates to benzimidazolyl-methyl urea derivatives of formula (I), wherein n, D, E, R1, R2, R3, R4, R6, R7, R8 and R9 are as defined in the description, their preparation and their use as pharmaceutically active compounds.
Suzuki Coupling of Cyclopropylboronic Acid With Aryl Halides Catalyzed by a Palladium–Tetraphosphine Complex
作者:Mhamed Lemhadri、Henri Doucet、Maurice Santelli
DOI:10.1080/00397910500330833
日期:2006.2
Abstract The tetraphosphine all‐cis‐1,2,3,4‐tetrakis(diphenylphosphinomethyl)cyclopentane (Tedicyp) in combination with [Pd(C3H5)Cl]2 affords a very efficient catalyst for the coupling of cyclopropylboronic acid with aryl bromides and aryl chlorides. Higher reactions rates were observed with aryl bromides than with aryl chlorides; however, even in the presence of 1–0.4% of catalyst, a few aryl chlorides