A Highly Nucleophilic Multifunctional Chiral Phosphane-Catalyzed Asymmetric Intramolecular Rauhut-Currier Reaction
作者:Xiao-Nan Zhang、Min Shi
DOI:10.1002/ejoc.201200940
日期:2012.11
An asymmetric variant of the intramolecularRauhut–Currier (RC) reaction can be achieved using a highlynucleophilicmultifunctionalchiral phosphane; the corresponding cyclopentene and cyclohexene derivatives are produced in moderate to good yields and with good to excellent enantioselectivities.
Stereoselective Borylcupration/Michael Addition on Symmetrical Dienones
作者:Laxman Devidas Khalse、Prasanta Ghorai
DOI:10.1021/acs.joc.2c02714
日期:2023.7.7
An efficient cascade protocol for the stereoselective synthesis of borylated carbocycles via copper-catalyzed borylative Michael/Michael cyclization is presented. Using this mild approach, up to 24 new boronic ester substituted indanes, cyclohexanes, and cyclopentanes were prepared in good yields with excellent diasteroselectivities and exceptional functional group tolerance. Furthermore, carbacyclic
Ischay, Michael A.; Anzovino, Mary E.; Du, Juana, Journal of the American Chemical Society, 2008, vol. 130, p. 12886 - 12887
作者:Ischay, Michael A.、Anzovino, Mary E.、Du, Juana、Yoon, Tehshik P.
DOI:——
日期:——
Enantioselective Rauhut−Currier Reactions Promoted by Protected Cysteine
作者:Carrie E. Aroyan、Scott J. Miller
DOI:10.1021/ja067139f
日期:2007.1.1
We report highly enantioselective examples of the Rauhut-Currier cycloisomerization reaction (the "vinylogous Morita-Baylis-Hillman reaction"). The reaction is highly practical and is catalyzed by a commercially available derivative of the proteinogenic amino acid cysteine. Reactions are conducted in the presence of potassium tert-butoxide and a critical concentration of water in bulk acetonitrile. A mechanistic model is advanced that may account for reaction selectivity that is predicated on organizational chelation of K ion in the product-determining step in which the Cys derivative undergoes limination.
Diastereoselective Cobalt-Catalyzed Aldol and Michael Cycloreductions
作者:Tae-Gon Baik、Ana Liza Luis、Long-Cheng Wang、Michael J. Krische