Stereospecific Palladium-Catalyzed Cross-Coupling of (<i>E</i>)- and (<i>Z</i>)-Alkenylsilanolates with Aryl Chlorides
作者:Scott E. Denmark、Jeffrey M. Kallemeyn
DOI:10.1021/ja065988x
日期:2006.12.1
geometrically defined (E)- and (Z)-alkenyl- and styrylsilanolates with a wide variety of aromatic and heteroaromatic chlorides has been achieved. Under catalysis by bulky, biphenyl-derived phosphines and allylpalladium chloride, the (preformed, stable) potassium salts of di-, tri- and tetrasubstituted alkenyldimethylsilanols undergo high yielding and highly stereospecific coupling to aryl chlorides in THF or dioxane
Enantioselective Nickel-Catalyzed Mizoroki–Heck Cyclizations To Generate Quaternary Stereocenters
作者:Jean-Nicolas Desrosiers、Jialin Wen、Sergei Tcyrulnikov、Soumik Biswas、Bo Qu、Liana Hie、Dmitry Kurouski、Ling Wu、Nelu Grinberg、Nizar Haddad、Carl A. Busacca、Nathan K. Yee、Jinhua J. Song、Neil K. Garg、Xumu Zhang、Marisa C. Kozlowski、Chris H. Senanayake
DOI:10.1021/acs.orglett.7b01054
日期:2017.7.7
The development of enantioselective carbon–carbon bond couplings catalyzed by nonprecious metals is highly desirable in terms of cost efficiency and sustainability. The first nickel-catalyzed enantioselective Mizoroki–Heck coupling is reported. This transformation is accomplished via mild reaction conditions, leveraging on QuinoxP* as a chiral ligand to afford oxindoles containing quaternary stereocenters
Griesbaum,K. et al., Liebigs Annalen der Chemie, 1979, p. 1137 - 1150
作者:Griesbaum,K. et al.
DOI:——
日期:——
BONSIGNORE, L.;FADDA, A. M.;LOY, G.;MACCIONI, A.;PODDA, G., J. HETEROCYCL. CHEM., 1983, 20, N 3, 703-707
作者:BONSIGNORE, L.、FADDA, A. M.、LOY, G.、MACCIONI, A.、PODDA, G.
DOI:——
日期:——
Formation of Enehydrazine Intermediates through Coupling of Phenylhydrazines with Vinyl Halides: Entry into the Fischer Indole Synthesis
作者:Fuxu Zhan、Guangxin Liang
DOI:10.1002/anie.201207173
日期:2013.1.21
Cut to the chase: Direct formation of an enehydrazine, an intermediate in the classic Fischerindolesynthesis, solves the regioselectivity problem associated with indolization. This approach not only achieves selective synthesis of indoles through proper selection of the vinyl halide, but also leads to quick construction of desoxyeseroline and esermethole, as well as the key structural motif in the