FeCl3?6H2O-catalyzed alkenylation of indoles with aldehydes
FeCl3?6H2O-catalyzed efficient C3-alkenylation of indoles was realized through the condensation of aldehydes and indole derivatives in the presence of 2 equiv of ethanol at ambient temperature, forming 3- vinylindoles in up to 93% yields. Ethanol promoted formation of the desired products. An obvious solvent effect was observed, and bisindoles were identified as the reaction intermediates.
Yang, Qin,Wang, Liandi,Guo, Tenglong,Yu, Zhengkun
p. 8355 - 8361
(2013/01/15)
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