Deoxycholic Acid-Derived Biaryl Phosphites as Versatile and Enantioselective Ligands in the Rhodium-Catalyzed Conjugate Addition of Arylboronic Acids to Nitroalkenes
作者:Varsha R. Jumde、Anna Iuliano
DOI:10.1002/adsc.201300619
日期:2013.11.25
AbstractA highly enantioselective conjugate addition of arylboronic acids to cyclic as well as acyclic aromatic and aliphatic nitroalkenes is presented. The rhodium complexes obtained from deoxycholic acid‐derived binaphthyl and flexible biphenyl phosphites showed good activity as well as very high enantioselectivity (ee up to 99%) in the conjugated addition even in the presence of challenging substrates such as 1‐nitrocyclohexene or aliphatic acyclic nitroalkenes.magnified image
Bowman, W. Russell; Brown, David S.; Burns, Catherine A., Journal of the Chemical Society. Perkin transactions I, 1994, # 15, p. 2083 - 2090
作者:Bowman, W. Russell、Brown, David S.、Burns, Catherine A.、Crosby, David
DOI:——
日期:——
Nitro olefins and organoaluminum compounds: a powerful synthetic tool in organic chemistry
作者:Angelo Pecunioso、Rita Menicagli
DOI:10.1021/jo00271a028
日期:1989.5
Palladium(II)-Catalyzed Conjugate Addition of Arylsiloxanes in Water
作者:Rachel Lerebours、Christian Wolf
DOI:10.1021/ol071067v
日期:2007.7.1
Palladium-phosphinous acids catalyze the conjugateaddition of arylsiloxanes to a wide range of alpha,beta-unsaturated substrates in water. A microwave-assisted procedure is described that uses 5 mol % of POPd1 to afford beta-substituted ketones, aldehydes, esters, nitriles, and nitroalkanes in 83% to 96% yield within 4 h. This method eliminates the need for stoichiometric additives and an excess of