Diazo Preparation via Dehydrogenation of Hydrazones with “Activated” DMSO
摘要:
We report that "activated" dimethyl sulfoxide efficiently dehydrogenates hydrazones to the respective diazo species at -78 degrees C. Under optimized conditions, triethylamine hydrochloride is removed quantitatively by vacuum filtration to provide solutions of diazo compounds. Stable diazo species can be isolated in high yield, or alternatively, the direct treatment of these solutions with carboxylic acids provides esters.
The present invention provides a polymerizable compound having high storage stability without causing crystal precipitation when added to a polymerizable composition. The present invention also provides a polymerizable composition containing the compound. When the filmy polymer produced through polymerization of the polymerizable composition is irradiated with UV light, it hardly discolors or peels from substrate. Further, the present invention provides a polymer produced through polymerization of the polymerizable composition and an optically anisotropic body using the polymer.
Design, Synthesis and Biochemical Evaluation of Novel Ethanoanthracenes and Related Compounds to Target Burkitt’s Lymphoma
作者:Andrew J. Byrne、Sandra A. Bright、James P. McKeown、John E. O’Brien、Brendan Twamley、Darren Fayne、D. Clive Williams、Mary J. Meegan
DOI:10.3390/ph13010016
日期:——
Burkitt’s lymphoma (BL) is a rare form of non-Hodgkin’s lymphoma in which the cancer starts in the immune B-cells. We report the synthesis and preliminary studies on the antiproliferative activity of a library of 9,10-dihydro-9,10-ethanoanthracene based compounds structurally related to the antidepressant drug maprotiline against BL cell lines MUTU-1 and DG-75. Structural modifications were achieved by Diels-Alder
[EN] POLYMERIZABLE COMPOUND AND OPTICALLY ANISOTROPIC BODY<br/>[FR] COMPOSÉ POLYMÉRISABLE ET CORPS OPTIQUEMENT ANISOTROPE
申请人:DAINIPPON INK & CHEMICALS
公开号:WO2017079867A1
公开(公告)日:2017-05-18
There is provided a polymerizable composition, by which discoloration or alignment defects are less likely to occur when a filmy polymer, which is obtained by adding a polymerizable compound to the polymerizable composition and polymerizing this composition, is irradiated with ultraviolet light. There are also provided a polymer obtained by polymerizing the polymerizable composition, and an optically anisotropic body using the polymer. The present invention provides a polymerizable low-wavelength dispersive or polymerizable reverse-wavelength dispersive compound having a partial structure represented by Formula (Z-0). Further, the present invention provides a composition containing the compound; a polymer obtained by polymerizing the composition; and an optically anisotropic body obtained by using the polymer.
Fluorescence of some tri- and tetra-dentate pyrazol-derived stable ligands
作者:Taibi Ben Hadda、Abdelali Kerbal、Oumaima Touimi Benjelloun、Abdeljalil El Fatmi、Maria Daoudi、Najib Ben Larbi、Ismail Warad
DOI:10.1007/s11164-012-0809-1
日期:2013.9
A new class of tripodal N-ligands have been prepared under mild conditions by reaction of N-hydroxymethyl-3,5-dimethylpyrazole with 2-furylmethylamine; 2-pyridylmethylamine; 4-nitrobenzaldehyde hydrazone and (E)-1-((anthracen-9-yl)methylene)hydrazine in a double equimolar ratio (2:1). The tripodal ligands were characterized by IR, 1H-, and 13C-NMR, microanalysis, and mass spectrometry. The fluorescence properties of the ligands were analyzed.
Synthesis and Pro-Apoptotic Effects of Nitrovinylanthracenes and Related Compounds in Chronic Lymphocytic Leukaemia (CLL) and Burkitt’s Lymphoma (BL)
作者:Andrew J. Byrne、Sandra A. Bright、James. P. McKeown、Adam Bergin、Brendan Twamley、Anthony M. McElligott、Sara Noorani、Shubhangi Kandwal、Darren Fayne、Niamh M. O’Boyle、D. Clive Williams、Mary J. Meegan
DOI:10.3390/molecules28248095
日期:——
In this paper, we report the synthesis and antiproliferative effects of a series of (E)-9-(2-nitrovinyl)anthracenes and related nitrostyrene compounds in CLL cell lines and also in Burkitt’s lymphoma (BL) cell lines, a rare form of non-Hodgkin’s immune B-cell lymphoma. The nitrostyrene scaffold was identified as a lead structure for the development of effective compounds targeting BL and CLL. The series