Highly Efficient Gold(I)-Catalyzed Regio- and Stereoselective Hydrocarboxylation of Internal Alkynes
作者:Stéphanie Dupuy、Danila Gasperini、Steven P. Nolan
DOI:10.1021/acscatal.5b02090
日期:2015.11.6
We report the highly efficient gold-catalyzed hydrocarboxylation of internal alkynes that operates under solvent- and silver-free conditions. This new, simple, and eco-friendly protocol allows for the synthesis of a wide variety of functionalized aryl and alkyl enol esters in high yields, with Z-stereospecificity and good regioselectivities and without the requirement for purification by chromatography
The silver-catalyzed hydroacyloxylation of internal alkynes with tertiary alkanoic acids proceeds stereoselectively to produce (Z)-enol esters. α,β-Unsaturated carboxylic acids and benzoic acids also undergo silver-mediated addition toward alkynes effectively.
Hydrocarboxylation of unactivated internal alkynes with carboxylic acids catalyzed by dinuclear palladium complexes
作者:Naofumi Tsukada、Atsushi Takahashi、Yoshio Inoue
DOI:10.1016/j.tetlet.2010.11.046
日期:2011.1
Dinuclear palladium complexes catalyzed addition reactions of carboxylic acid O–H bond to unactivated internal alkynes. The reaction afforded a trans-adduct selectively.
双核钯配合物催化羧酸O–H键与未活化的内部炔烃的加成反应。该反应选择性地提供了反式加合物。
Addition of carboxylic acids to alkynes catalysed by ruthenium complexes
作者:Michal Rotem、Youval Shvo
DOI:10.1016/0022-328x(93)80084-o
日期:1993.4
[Ru(PhCOO)(CO)2(PhCOOH)]2, the catalyst, indicates that the active catalytic species are mononuclear rutheniumcomplexes. A stoichiometric reaction modelled on the catalytic reaction was monitored by infrared spectroscopy and finally quenched with PPh3. The quenching products were identified as new mononuclear rutheniumcomplexes, and these identifications greatly facilitated understanding of the mechanism leading
A Selective Palladium-Catalyzed Carbonylative Arylation of Aryl Ketones to Give Vinylbenzoate Compounds
作者:Johannes Schranck、Anis Tlili、Helfried Neumann、Pamela G. Alsabeh、Mark Stradiotto、Matthias Beller
DOI:10.1002/chem.201202895
日期:2012.12.3
Preparation of enols: When treated with [Pd(cinnamyl)Cl}2]/cataCXium A (nBuPAd2, Ad=adamantyl) under an atmosphere of CO, arylketones react with aryl halides in a carbonylative CO coupling reaction to form (Z)‐vinyl benzoates (see scheme).