1-Chloromethyl-4-fluoro-1,4-diazoniabicyclo[2,2,2]octane Bis(tetrafluoroborate) as Novel and Versatile Reagent for the Rapid Thiocyanation of Indoles, Azaindole, and Carbazole
作者:J. S. Yadav、B. V. Subba Reddy、Y. Jayasudhan Reddy
DOI:10.1246/cl.2008.652
日期:2008.6.5
SelectfluorTM is found to catalyze efficiently the electrophilic thiocyanation of indoles and pyrrole with ammonium thiocyanate under mild and neutral conditions to produce the corresponding 3-indolyl and 2-pyrrolyl thiocyanates, respectively, in excellent yields with high selectivity. This method is effective even with azaindole and carbazole while many of reported procedures failed to produce thiocyanates
IBX: A Novel and Versatile Oxidant for Electrophilic Thiocyanation of Indoles, Pyrrole and Arylamines
作者:Jhillu Yadav、Basi Reddy、B. Murali Krishna
DOI:10.1055/s-0028-1083636
日期:2008.12
The direct thiocyanation of indoles and pyrrole with ammonium thiocyanate has been achieved using o-iodoxybenzoic acid (IBX) under mild and neutral conditions to produce indol-3-yl and pyrrol-2-yl thiocyanates, respectively, in excellent yields and with high selectivity. This method is effective even with N-substituted arylamines for the preparation of aryl thiocyanates.
Efficient Thiocyanation of Indoles Using <i>Para</i>-Toluene Sulfonic Acid
作者:Biswanath Das、Avula Satya Kumar
DOI:10.1080/00397910902883744
日期:2010.1.14
Treatment of indoles with ammonium thiocyanate in the presence of para-toluene sulfonic acid afforded the corresponding 3-thiocyano indoles at room temperature in excellent yields.