Copper(<scp>i</scp>)-catalysed transfer hydrogenations with ammonia borane
作者:Eva Korytiaková、Niklas O. Thiel、Felix Pape、Johannes F. Teichert
DOI:10.1039/c6cc09067b
日期:——
Highly Z-selective alkyne transfer semihydrogenations and conjugate transferhydrogenations of enoates can be effected by employing a readily available copper(I)/N-heterocyclic carbene (NHC) complex, [IPrCuOH], in combination with ammoniaborane as a H2 equivalent.
Stereoselective alkyne semihydrogenations with an air-stable copper(<scp>i</scp>) catalyst
作者:Niklas O. Thiel、Johannes F. Teichert
DOI:10.1039/c6ob02271e
日期:——
An air-stable and preactivated copper(I) hydroxide/N-heteroyclic carbene (NHC) complex for alkynesemihydrogenations is reported. Next to an enhanced practicability of the process, the resulting alkenes are obtained with high Z-selectivities and no overreduction to the corresponding alkanes.