Ortho-mercurated 4-aryloxymethylcoumarins and 1-azacoumarins have been found to undergo smooth intramolecular metalation in refluxing xylene in the presence of activated neutral alumina and anhydrous potassium carbonate. This is the first report on the synthesis of heterocycles not possessing a metal heteroatom linkage. (C) 2010 Elsevier Ltd. All rights reserved.
Arsinous acid as a thiol binding group: potential cysteine peptide tagging functionality that binds a single thiol
作者:Xiaofei Liang、Dale G. Drueckhammer
DOI:10.1039/c3nj01462b
日期:——
A simple aryl arsinous acid (ArAs(CH3)OH) was prepared byorthomercuration ofp-cresol followed by Pd-catalyzed reaction with methylarsenic dibromide, purification as the mercaptoethanol adduct, and deprotection using a silver salt.