Abstract The synthesis of 2-carbonylindoles was achieved via a iodine-mediated cyclization of the corresponding enaminone precursors, which were formed by reaction of the α- arylaminomethylene carbonyl derivatives with N, N'-dimethylformamide dimethyl acetal (DMFDMA). An alternative and more efficient procedure consisted of a similar cyclization of the enaminones, but under solvent-free and grinding reaction conditions. In another ...
[Stokes, Benjamin J.; Dong, Huijun; Leslie, Brooke E.; Pumphrey, Ashley L.; Driver, Tom G. Journal of the American Chemical Society, 2007 , vol. 129, # 24 p. 7500 - 7501]