Palladium-catalyzed highly regioselective hydroaminocarbonylation of aromatic alkenes to branched amides
作者:Jinping Zhu、Bao Gao、Hanmin Huang
DOI:10.1039/c7ob00371d
日期:——
Pd(t-Bu3P)2 has been successfully identified as an efficient catalyst for the hydroaminocarbonylation of aromatic alkenes to branched amides under relatively mild reaction conditions. With hydroxylamine hydrochloride as an additive, both aliphatic and aromatic amines could be used as coupling partners for the present reaction, leading to production of branched amides in high yields with excellent regioselectivities
Ru-Catalyzed Hydroamidation of Alkenes and Cooperative Aminocarboxylation Procedure with Chelating Formamide
作者:Sangwon Ko、Hoon Han、Sukbok Chang
DOI:10.1021/ol034862r
日期:2003.7.1
A strategy of chelation-assisted activation of formamide was employed to achieve hydroamidation of alkenes to generate one-carbon-elongated amides in moderate to good selectivity and yields. Also reported is the two-metal-catalyzed cooperative aminocarboxylation of aryl iodides, in which Ru is presumed to catalyze decarbonylation of formamide to release carbon monoxide and amine for the subsequent Pd-catalyzed aminocarboxylation routes, thus enabling the net transformation to be performed in the absence of external CO pressure.
Aza-oxindole synthesis by oxidative coupling of Csp2–H and Csp3–H centers
作者:Chandan Dey、E. Peter Kündig
DOI:10.1039/c2cc17871k
日期:——
A Cu(II) mediated oxidative Csp2âH and Csp3âH coupling protocol gives access to aza-oxindoles in good to excellent yield in the presence of NaOtBu as base and toluene as solvent.