1908-67-4Relevant articles and documents
Gallium(III)-catalyzed three-component (4+3) cycloaddition reactions
Han, Xinping,Li, Hui,Hughes, Russell P.,Wu, Jimmy
, p. 10390 - 10393 (2012)
Direct approach to indoles: The title reaction generates cyclohepta[b]indole derivatives in a single step at room temperature (see scheme). Exclusion of air or moisture is not required. DFT calculations support a stepwise cyclization event, and the versatility of the method is demonstrated by providing quick access to a library of cyclohepta[b]indole analogues. Copyright
Friedel-Crafts Hydroxyalkylation of Indoles Mediated by Trimethylsilyl Trifluoromethanesulfonate
Downey, C. Wade,Poff, Christopher D.,Nizinski, Alissa N.
, p. 10364 - 10369 (2015/11/03)
Indoles and N-alkylindoles undergo Friedel-Crafts addition to aldehydes in the presence of trimethylsilyl trifluoromethanesulfonate and a trialkylamine to produce 3-(1-silyloxyalkyl)indoles. Neutralization of the reaction mixture with pyridine followed by deprotection under basic conditions with tetrabutylammonium fluoride provides the 1:1 adduct as the free alcohol. This method prevents spontaneous conversion of the desired products to the thermodynamically favored bisindolyl(aryl)methanes, a process typically observed when indoles are reacted with aldehydes under acidic conditions.
Di- and triheteroarylalkanes via self-condensation and intramolecular Friedel-Crafts type reaction of heteroaryl alcohols
Dhiman, Seema,Ramasastry
, p. 8030 - 8035 (2013/12/04)
An efficient synthetic approach to diheteroarylmethanes and 1,3-diheteroarylpropenes has been developed via Yb(iii)-catalyzed sequential self-condensation of 2-furfuryl (or 2-thienyl or 3-indolyl) alcohols followed by intramolecular Friedel-Crafts type re