Tin-Free Radical Sequences under Acidic Conditions. Convergent Access to Azole-Containing Structures
摘要:
graphicVarious xanthates add efficiently to olefins bearing [1,2,4]triazole, imidazole, or benzimidazole moieties in the presence of camphorsulfonic acid via a radical chain reaction initiated by a small amount of lauroyl peroxide. The adducts may be transformed to more complex molecules by implementing a further radical cyclization.
NHC-boranes by a diphosphane-ligated cationic Rh complex was applied in an unprecedented intramolecular hydroboration reaction of simple olefins. The use of NHC-boranes as hydroborating reagents is still undisclosed due to their nonreactivity toward alkenes which could be explained by the high stability of this complex rendering it unable to provide a "free" borane hydroborating reagent. B-H bond Rh activation
search for a new class of potential antimicrobial agents, five novel N-substituted imidazole 2-aldoximes and their six quaternary salts were evaluated. The antimicrobialactivity was assessed against a panel of representative Gram-positive and Gram-negative bacteria, including multidrugresistantbacteria. All compounds demonstrated potent in vitro activityagainst the tested microorganisms, with MIC
METHODS OF ACYLATION WITH AN IONIC LIQUID CATALYZING MEDIUM
申请人:THE BOARD OF TRUSTEES OF THE UNIVERSITY OF ALABAMA
公开号:US20180170847A1
公开(公告)日:2018-06-21
Described herein are methods of acylating an aryl substrate comprising combining a substituted aryl substrate with an acylating agent in the presence of a catalyzing medium, thereby acylating the substituted aryl substrate in the para position, wherein the catalyzing medium is an ionic liquid comprising at least one cation and at least one metal halide anion.
Atom-Transfer Radical Addition to Unactivated Alkenes by using Heterogeneous Visible-Light Photocatalysis
作者:Liang-Liang Mao、Huan Cong
DOI:10.1002/cssc.201701382
日期:2017.11.23
photocatalyst titanium dioxide in the presence of a catalytic hypervalent iodine(III) reagent has been found as an effective method to initiate a broad range of atom-transfer radicaladdition reactions to unactivated alkenes under mild and heavy metal-free conditions.
Earth abundant metal complexes of donor functionalised N-heterocyclic carbene ligands: synthesis, characterisation and application as amination catalysts
作者:Halliru Ibrahim、Muhammad Dabai Bala
DOI:10.1039/c6nj01118g
日期:——
A detailed study on Co and Ni complexes of N-functionalised chelating NHC ligands applied for the mono-arylation of aniline and substituted aryl amines is presented.