Regioselective Rhodium(II)-Catalyzed Hydroaminations of Propargylguanidines
作者:Morgan J. Gainer、Nitasha R. Bennett、Yu Takahashi、Ryan E. Looper
DOI:10.1002/anie.201006087
日期:2011.1.17
Different than others: Dimeric rhodium(II) carboxylates uniquely catalyze the 6‐endo‐dig selective hydroamination of propargylguanidines while tranditional π‐Lewis acids are typically 5‐exo‐dig selective (see scheme, oct=octanoate). Furthermore, this represents a new role for RhII to activate alkynes for addition chemistry.