Palladium-Catalyzed Silane/Siloxane Reductions in the One-Pot Conversion of Nitro Compounds into Their Amines, Hydroxylamines, Amides, Sulfonamides, and Carbamates
作者:Robert Maleczka、Ronald Rahaim
DOI:10.1055/s-2006-950231
日期:——
A combination of palladium(II) acetate, aqueous potassi- um fluoride, and polymethylhydrosiloxane (PMHS) facilitates the room-temperature reduction of aromatic nitro compounds to anilines. These reactions tend to be quick (30 min), high-yielding, and tolerate a range of other functional groups. Replacement of PMHS/KF with triethylsilane allows for the reduction of aliphatic nitro compounds to their
Rapid and Facile Synthesis of Isomaleimides: Dehydration of Maleamic Acids using Methanesulfonyl Chloride
作者:Mitchell P. Croatt、Khyarul Alam、Elvis C. McFee
DOI:10.1055/s-0041-1737414
日期:2022.7
The dehydration of maleamicacids using methanesulfonyl chloride as a dehydrating agent to selectively and rapidly (<15 min) generate isomaleimides is reported. A variety of maleamicacid derivatives produce the corresponding isomaleimides in good to excellent yields. Adaptation of this protocol under flow synthesis allows for similar efficiency and decreased reaction times (13 seconds residence time)
Preparation process of N-substituted monochlorosuccinimide
申请人:MITSUI TOATSU CHEMICALS, Inc.
公开号:EP0349259A1
公开(公告)日:1990-01-03
N-substituted monochlorosuccinimides e.g., N-phenylmonochlorosuccinimide, can be prepared in a high yield by reacting a maleamic acid, e.g., N-phenylmaleamic acid, with phosgene in the presence of a catalyst,e.g., dimethylformamide .
Syntheses of 4-(3,5-Bisphenylmethylene-4-oxo-piperidin-1-yl)-4-oxo-but-2<b><i>Z</i></b>-enoic Acid Arylamides as Candidate Cytotoxic Agents
作者:Amitabh Jha、Jonathan R. Dimmock
DOI:10.1081/scc-120017198
日期:2003.1.5
The title compounds were designed and synthesized as candidate cytotoxic agents. They were synthesized by reacting 3,5-bisphenylmethylene-piperidin-4-one with the appropriate 3-arylcarbamoylacrylic acids. These reactions follow an unusual mechanism and deviate from the previously reported reactions on similar substrates.
Curcumin-inspired cytotoxic 3,5-bis(arylmethylene)-1-(N-(ortho-substituted aryl)maleamoyl)-4-piperidones: A novel group of topoisomerase II alpha inhibitors
作者:Amitabh Jha、Katherine M. Duffield、Matthew R. Ness、Sujatha Ravoori、Gabrielle Andrews、Khushwant S. Bhullar、H.P. Vasantha Rupasinghe、Jan Balzarini
DOI:10.1016/j.bmc.2015.08.023
日期:2015.10
Three series of novel 3,5-bis(arylmethylene)-1-(N-(ortho-substituted aryl)maleamoyl)-4-piperidones, designed as simplified analogs of curcumin with maleic diamide tether, were synthesized and bioevaluated. These compounds displayed potent cytotoxicity towards human Molt 4/C8 and CEM T-lymphocytes as well as murine L1210 leukemic cells. In contrast, the related N-arylmaleamic acids possessed little or no cytotoxicity in these three screens. Design of these compounds was based on molecular modeling studies performed on a related series of molecule in a previous study. Representative title compounds were found to be significantly potent in inhibiting the activity of topoisomerase II alpha indicating the possible mode of action of these compounds. These compounds were also potent antioxidants in vitro and attenuated the AAPH triggered peroxyl radical production in human fibroblasts. Various members of these series were also well tolerated in both in vitro and in vivo toxicity analysis. (C) 2015 Elsevier Ltd. All rights reserved.