A general procedure for the reductive coupling of N-tosylhydrazones with amines in the presence of Cu(acac)2 and Cs2CO3 has been developed. The protocol is very effective and chemoselective with various primary and secondary aliphatic amines, aminoalcohols as well as azole derivatives to give α-branched amines in good yields.
Practical Intermolecular Hydroarylation of Diverse Alkenes via Reductive Heck Coupling
作者:John A. Gurak、Keary M. Engle
DOI:10.1021/acscatal.8b02717
日期:2018.10.5
hydroarylation of alkenes is an attractive approach to construct carbon–carbon (C–C) bonds from abundant and structurally diverse starting materials. Herein we report a palladium-catalyzed reductive Heck hydroarylation of aliphatic and heteroatom-substituted terminal alkenes and select internal alkenes with an array of (hetero)aryl iodides. The reaction is anti-Markovnikov selective with terminal alkenes and tolerates
Photochemical intramolecular aromatic substitutions of the imidazol-2-yl radical are superior to those mediated by Bu<sub>3</sub>SnH
作者:Mairéad A. Clyne、Fawaz Aldabbagh
DOI:10.1039/b512729g
日期:——
Six-membered photochemical cyclisations of 2-iodo-N-(2-arylethyl)imidazoles proceeded regioselectively in higher yields than the equivalent tin hydride-mediated reactions. The decrease in yield of cyclisation products, 5,6-dihydroimidazo[2,1-a]isoquinolines containing strongly deactivating substituents on the aryl ring confirmed the electrophilic nature of the sigma-imidazol-2-yl radicals. The seven-membered
Substituted heterocyclylisoquinolinium salts and compositions and
申请人:Sterling Winthrop Inc.
公开号:US05604224A1
公开(公告)日:1997-02-18
Substitutued heterocyclylisoquinolinium salts, pharmaceutical compositions containing them and methods for the treatment or prevention of neurodegenerative disorders or neurotoxic injuries utilizing them.
Compounds and Methods for Treating Cancer and Diseases of the Central Nervous System
申请人:Gupta Ajay
公开号:US20110319459A1
公开(公告)日:2011-12-29
Disclosed are compounds of the general formula (I):
TC
n
D (I),
compositions comprising an effective amount of said compounds either alone or in combination with other chemotherapeutic agents, and methods useful for treating or preventing cancer and for inhibiting tumour tissue growth. These compounds attenuate the oxidative damage associated with increased heme-oxygenase activity and can reduce cell proliferation in transformed cells. In addition, the described compounds and compositions are useful as neuroprotectants and for treating or preventing neurodegenerative disorders and other diseases of the central nervous system.