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。
Ruthenium-Catalyzed Hydrocarboxylation of Internal Alkynes
作者:Janine Jeschke、Tony B. Engelhardt、Heinrich Lang
DOI:10.1002/ejoc.201501583
日期:2016.3
O2CPh)2] (1) in the selective syn-addition of carboxylicacids to internal alkynes, yielding valuable trisubstituted enolesters with (E)-configuration, is described. All reactions feature excellent stereoselectivities and good regioselectivities. The regioselectivity is dictated by electronic and steric aspects of the alkyne substituents and the acidity of the carboxylicacid. The catalytic activity
Gold(I)-Catalyzed Addition of Carboxylic Acids to Alkynes
作者:Bathoju Chandra Chary、Sunggak Kim
DOI:10.1021/jo101543q
日期:2010.11.19
Au(I)-catalyzed hydroacyloxylation of alkynes with carboxylic acids is described PPh3AuCl/AgPF6 catalyst affords the Markonikov addition products, whereas PPh3AuCl/AgOTf catalyst gives the more stable isomerized products via the Markonikov products
Gold(<scp>i</scp>)-catalyzed addition of carboxylic acids to internal alkynes in aqueous medium
作者:Pedro J. González-Liste、Sergio E. García-Garrido、Victorio Cadierno
DOI:10.1039/c6ob02800d
日期:——
We report herein the efficient hydro-oxycarbonylation of symmetrical and unsymmetrical internal alkynes with carboxylic acids in water at 60 °C, employing the catalytic system [AuCl(PPh3)]/AgOAc (5 mol%). This simple and eco-friendly protocol allows for the synthesis of a wide variety of trisubstituted enol esters (37 examples) in high yields and with complete Z-stereoselectivity. The use of microwave
Broad Scope Synthesis of Ester Precursors of Nonfunctionalized Chiral Alcohols Based on the Asymmetric Hydrogenation of α,β-Dialkyl-, α,β-Diaryl-, and α-Alkyl-β-aryl-vinyl Esters
作者:Félix León、Pedro J. González-Liste、Sergio E. García-Garrido、Inmaculada Arribas、Miguel Rubio、Victorio Cadierno、Antonio Pizzano
DOI:10.1021/acs.joc.7b00710
日期:2017.6.2
a high enantioselectivity in the hydrogenation of E/Z mixtures (ca. Z/E = 75:25) of α,β-dialkylvinyl substrates, while a dramatic decrease on enantioselectivity was observed in the case of α-methyl-β-anisylvinyl acetate (Z/E = 58:42). Complementary deuteration reactions are in accord with a highlyenantioselectivehydrogenation for both olefin isomers in the case of α,β-dialkylvinyl esters. In contrast