Transition-Metal-Catalyzed Regiodivergent and Stereoselective Access to Branched and Linear Allylated 4-Pyridones
作者:Johannes P. Schmidt、Changkun Li、Bernhard Breit
DOI:10.1002/chem.201701382
日期:2017.5.11
A regiodivergent and stereoselective transition‐metal‐catalyzed addition of 4‐pyridones to allenes furnishing N‐allylated pyridones is reported. Employing a commercially available chiral rhodium catalyst enabled enantioselective branched‐selective allylation. Conversely, an achiral palladium catalyst led to linear‐selective N‐allylation in high E‐selectivities. A wide range of functional groups was
Selective Hydrosilylation and Hydroboration of Allenes Catalyzed by Cobalt‐Pincer Complexes
作者:Dariusz Lewandowski、Grzegorz Hreczycho
DOI:10.1002/adsc.202400309
日期:2024.6.18
regioselectivity and stereoselectivity in the hydroelementation of terminalallenes presents a formidable challenge. Despite the existence of various catalytic methods for their functionalization, this entire class of reactions remains significantly underdeveloped and demands extensive research. Here, we report a method for the hydroelementation of allenes using inexpensive PN5P pincer cobalt complexes built on