Copper-catalysed synthesis of 3-hydroxyisoindolin-1-ones from benzylcyanide 2-iodobenzamides
作者:Veerababurao Kavala、Chen-Yu Wang、Cheng-Chuan Wang、Prakash Bhimrao Patil、ChiaChi Fang、Chun-Wei Kuo、Ching-Fa Yao
DOI:10.1039/c9ob02329a
日期:——
An efficient one-pot two-step sequential reaction for the synthesis of biologically active 3-hydroxyisoindolin-1-one derivatives from 2-iodobenzamide derivatives and various substituted benzyl cyanides in the presence of CuCl and cesium carbonate in DMSO is reported. Furthermore, 3-hydroxyisoindolinone derivatives possessing bromo substituents were obtained from 2-iodobenzamide and 2-bromobenzyl cyanide
Synthesis and Pharmacological Evaluation of<i>N</i>-(Dimethylamino)ethyl Derivatives of Benzo- and Pyridopyridazinones
作者:Wanda Pakulska、Zbigniew Malinowski、Aleksandra K. Szczesniak、Elzbieta Czarnecka、Jan Epsztajn
DOI:10.1002/ardp.200800016
日期:2009.1
New N‐(dimethylamino)ethyl derivatives of phthalazinones and pyridopyridazinones 7, 9 were synthesized and assayed as potential analgesic agents in the hot‐plate, tail‐flick, and writhing tests. Pharmacological assay demonstrated that eight (in ten) of the newly synthesized compounds showed antinociceptive activity. Especially, 2‐[2‐(dimethylamino)ethyl]‐4‐phenyl‐2H‐phthalazin‐1‐one 7a showed remarkably
A new synergistic multicatalytic activation mode of eosinY has been discovered by exploiting the redox potential of its ground state and excited state. This catalytic strategy proves to be an enabling tool for visible‐light‐driven sequentialbenzylicC−Hamination and oxidation of o‐benzyl‐N‐methoxyl‐benzamides when using Selectfluor as a hydrogen atom transfer (HAT) reagent and O2 as oxidant. Efficient
Lithium–Bromide Exchange versus Nucleophilic Addition of Schiff's base: Unprecedented Tandem Cyclisation Pathways
作者:Samantha A. Orr、Emily C. Border、Philip C. Andrews、Victoria L. Blair
DOI:10.1002/chem.201902140
日期:2019.9.12
tert-butyllithium (tBuLi), we have revealed unprecedented competitive intermolecular and intramolecular cascade annulation pathways, leading to valuable compounds, such as iso-indolinones and N-substituted anthracene derivatives. A series of reaction parameters were probed, including solvent, stoichiometry, sterics and organolithium reagent choice, in order to understand the influences that limit such ring-closing
Synthesis of Some Novel <i>N</i>-Substituted Phthalazinone and Pyridopyridazinone Derivatives
作者:Zbigniew Malinowski、Dariusz Sroczyński、Aleksandra K. Szcześniak
DOI:10.1080/00397911.2015.1025282
日期:2015.8.3
Abstract Phthalazinone and pyridopyridazinone derivatives 3, 5, and 9 were prepared via reaction ofappropriate lactams 2 and 8 with 2-bromoethylphthalimide, N-tosylaziridine, and N,O-ditosyl derivatives of N-methylethanolamine in a two-step process in the presence of MeONa/MeOH or NaH/dimethylformamide (DMF). Starting compounds 2 and 8 were obtained by reaction of hydrazine hydrate with isoindolinones