Commercial Supported Gold Nanoparticles Catalyzed Alkyne Hydroamination and Indole Synthesis
作者:Shengzong Liang、Luisa Hammond、Bo Xu、Gerald B. Hammond
DOI:10.1002/adsc.201600804
日期:2016.10.20
on titanium dioxide (TiO2) were found to be a highly efficient catalyst for alkynehydroamination. Terminal alkynes could easily undergo intermolecularhydroamination with low catalyst loadings (0.2 mol% Au) under solvent‐free conditions. Indoles were efficiently synthesized using microwave heating through intramolecular hydroamination.
Para-Selective Gold-Catalyzed Direct Alkynylation of Anilines
作者:Jonathan P. Brand、Jérôme Waser
DOI:10.1021/ol203289v
日期:2012.2.3
A method for the para-selective alkynylation of anilines is reported using AuCl as catalyst and triisopropylsilylethynyl-1,2-benziodoxol-3(1H)-one (TIPS-EBX) as an electrophilic acetylene equivalent. Para-alkynyl anilines substituted at positions 2 or 3 were obtained in one step from simple anilines under mild conditions (room temperature to 60 °C) under air. The methodology could also be extended