Highly efficient palladium(<scp>ii</scp>) hydrazone based catalysts for the Suzuki coupling reaction in aqueous medium
作者:Subramanian Muthumari、Rengan Ramesh
DOI:10.1039/c6ra06734d
日期:——
and reveal the presence of a distorted square planar geometry around the Pd ion. The complexes 1–5 (0.05 mol%) have been found to be a highly active catalytic system in the mono and double Suzuki–Miyaura cross coupling reaction of deactivated aryl and heteroaryl bromides with different types of aryl boronic acids in neat water and the maximum yield was up to >99%. Notably, these catalysts work well with
Thermoanalytical studies on antimony(III) complexes with monochlorobenzoylhydrazones of 2-furaldehyde(FpClBHH),2-pyrrolaldehyde (PmClBHH) and 2-thiophenaldehyde(TpClBHH) as ligands
作者:I.A. Tossidis、C.A. Bolos、A. Chistofides
DOI:10.1016/0040-6031(88)87178-8
日期:1988.10
Abstract The antimony(III) tribal ides,SbX 3 (X = Cl, Br and I) react with the title ligands to give the compounds SbX 2 L (L=p-ch1orobenzoylhydrazones of 2-Furaldehyde(FpClBHH) 2-Pyrrolaldehyde (PmClBHH) and 2-Thiophenaldehyde(TpClBHH). The characterization of the new species was based on their elemental analysis,spectral data(IR,UV-Vis) as well as on thermal studies. The ligands appear to offer two
Monohalogenobenzoylhydrazones II. Synthesis and Study of Ti(IV) Complexes with Monochlorobenzoylhydrazones of 2-Furaldehyde, 2-Thiophenaldehyde, 2-Pyrrolaldehyde and Di-2-pyridylketone as Ligands
作者:I.A. Tossidis、C.A. Bolos
DOI:10.1016/s0020-1693(00)85666-2
日期:1986.2
titanium(IV) complexes of the general formulae L2TiCl2 [L− = benzoyl and mono- chlorobenzoylhydrazones of 2-furaldehyde(FBH-H and FC1BH-H), 2-thiophenaldehyde(TBH-H and TC1- BH-H), 2-pyrrolaldehyde(PBH-H and PC1BH-H)] and L′TiCl3 [L′ = benzoyl and monochlorobenzoyl- hydrazones of di-2-pyridylketone (DBH-H and DC1BH-H)] have been prepared and characterised by various physicochemical methods. All ligands appear
A facile catalytic one-pot synthesis of N-acylhydrazones via acceptorless dehydrogenativecoupling of readily available alcohols and benzohydrazides (R2CONHNH2) using arene ruthenium (II) complexes has been described. The coupling of alcohols with various benzohydrazides using ruthenium catalysts provide a wide range of N-acylhydrazones in good to excellent yields (63–93%; 32 examples). The present
已经描述了使用芳烃钌 (II) 配合物通过容易获得的醇和苯并酰肼 (R 2 CONHNH 2 ) 的无受体脱氢偶联,轻松催化一锅法合成N-酰基腙。使用钌催化剂将醇与各种苯并酰肼偶联提供了广泛的N-酰基腙具有良好至极好的收率(63–93%;32 个例子)。本协议提供了高选择性的腙,没有任何烷基化产物,并耐受一系列官能团。对照实验表明,该机制通过醇的无受体脱氢进行,氢和水是唯一的副产物。克级合成说明了本策略的有用性。
Mechanistic differences between in vitro assays for hydrazone-based small molecule inhibitors of anthrax lethal factor
作者:M. Leslie Hanna、Theodore M. Tarasow、Julie Perkins
DOI:10.1016/j.bioorg.2006.07.004
日期:2007.2
A systematically generated series of hydrazones were analyzed as potential inhibitors of anthrax lethal factor. The hydrazones were screened using one UV-based and two fluorescence-based in vitro assays. The study identified several inhibitors with IC50 values in the micromolar range, and importantly, significant differences in the types of inhibition were observed with the different assays. (c) 2006 Elsevier Inc. All rights reserved.