Electrochemical-induced benzyl C–H amination towards the synthesis of isoindolinones <i>via</i> aroyloxy radical-mediated C–H activation
作者:Mingming Yu、Yuhan Gao、Lin Zhang、Yingjie Zhang、Yiyan Zhang、Hong Yi、Zhiliang Huang、Aiwen Lei
DOI:10.1039/d1gc04676d
日期:——
The rapid synthesis of valuable isoindolinones with cheap and easily available starting materials undermildconditions is of great importance, but is challenging. We enclose here a novel electrochemical strategy to selectively and sustainably access isoindolinone using simple o-alkyl benzoic acids and nitriles as substrates under metal catalyst and external oxidant-free conditions. The protocol shows
COMPOUNDS FOR THE TREATMENT OF SPINAL MUSCULAR ATROPHY AND OTHER USES
申请人:Heemskerk Jill
公开号:US20090312323A1
公开(公告)日:2009-12-17
Compounds of Formula (I) or (II) useful for the treatment of spinal muscular atrophy or other uses, as well as methods of using such compounds to increase SMN expression, increase EAAT2 expression, or increase the expression of a nucleic acid that encodes a translational stop codon introduced by mutation or frameshift.
Photoredox/bismuth relay catalysis: A mild and transition metal-free visible-light-inducedPhotoredox/bismuth dual catalytic system allows sequential hydrogenation of nitroarenes and reductive dibenzylation and provides an facile access to N,N-dibenzyl anilines.
The photophysical properties and photochemistry of indoprofen (INP) have been investigated. Absorption and emission spectroscopies in phosphate buffer, ethanol and ether show that INP photophysics is dominated by a singlet-singlet transition of pipi* character. INP fluoresces at room temperature, with a quantum yield similar to0.04. Flash photolysis experiments together with the lack of phosphorescence at room temperature point to a very weak intersystem crossing. The photoreactivity of INP is centered on the propionic acid chain and gives rise to photoproducts similar to those obtained with other arylpropionic acids (ethyl, hydroxyethyl and acetyl derivatives). Thus, irradiation of INP in aqueous buffer results in photodecarboxylation and leads mainly to oxidative compounds whose proportions increase with increasing oxygen concentration. These data suggest a photoreactivity occurring from the excited singlet state.