Palladium(II)-Catalyzed Tandem Reaction of Intramolecular Aminopalladation of Allenyl <i>N</i>-Tosylcarbamates and Conjugate Addition
作者:Guosheng Liu、Xiyan Lu
DOI:10.1021/ol016727p
日期:2001.11.1
A divalent palladium-catalyzed tandem cyclization-coupling reaction of allenyl N-tosylcarbamates and acrolein was developed. The reaction gave aldehyde-functionalized 2-oxazolidinones in one step with high regioselectivity. A mechanism involving intramolecular aminopalladation of allene, followed by insertion of alkene and C-Pd bond protonolysis, is proposed. [reaction: see text]
Rhodium‐Catalyzed Asymmetric Intramolecular Hydroamination of Allenes
作者:Dino Berthold、Arne G. A. Geissler、Sabrina Giofré、Bernhard Breit
DOI:10.1002/anie.201904833
日期:2019.7.15
The rhodium‐catalyzed asymmetric intramolecular hydroamination of sulfonyl amides with terminal allenes is reported. It provides selective access to 5‐ and 6‐membered N‐heterocycles, scaffolds found in a large range of different bioactive compounds. Moreover, gram scale reactions, as well as the application of suitable product transformations to natural products and key intermediates thereof are demonstrated