XtalFluor-E® mediated proto-functionalization of <i>N</i>-vinyl amides: access to <i>N</i>-acetyl <i>N</i>,<i>O</i>-acetals
作者:Y. Yi、H. Gholami、M. G. Morrow、B. Borhan
DOI:10.1039/c7ob02283b
日期:——
few years. Here we report its use with protic nucleophiles in a catalytic manner for the in situ generation of protons that lead to the proteo functionalization of activated olefins. Utilizing the latter protocol, proteo etherification of enamides gives rise to N,O-acetals in nearly quantitative yields.
A nickel‐catalyzedasymmetric reductive hydroarylation of vinyl amides to produce enantioenriched α‐arylbenzamides is reported. The use of a chiral bisimidazoline (BIm) ligand, in combination with diethoxymethylsilane and aryl halides, enables the regioselective introduction of aryl groups to the internal position of the olefin, forging a new stereogenic center α to the N atom. The use of neutral reagents
A nickel-catalyzed tandem reaction of N-vinylamides with arylboronic acids and bromodifluoroacetate has been developed. The reaction efficiently furnishes a series of protected α,α-difluoro-γ-amino acid esters.