Indole synthesis: palladium-catalyzed C–H bond amination via reduction of nitroalkenes with carbon monoxide
作者:Tom H.H. Hsieh、Vy M. Dong
DOI:10.1016/j.tet.2008.11.034
日期:2009.4
nitroalkenes into indoles. Under mild reaction conditions (1 atm carbonmonoxide, 110 °C), palladium catalyzes the reductivecyclization of nitroalkenes to form a putative nitrosoalkene intermediate, which then rearranges to provide 3-arylindoles in high yields. Notably, this novel C–H bond amination takes advantage of carbonmonoxide as an inexpensive stoichiometric reductant and produces carbon dioxide as