5629-57-2Relevant articles and documents
Generation of reactive species by one-electron reduction of Fischer-type carbene complexes of group 6 metals and their use for carbon - Carbon bond formation
Fuchibe, Kohei,Iwasawa, Nobuharu
, p. 905 - 914 (2003)
Carbon - carbon bond-forming reactions mediated by one-electron reduction of Fischer-type carbene complexes of Group 6 metals were investigated. In the case of aryl- or silylcarbene complexes of tungsten, the anion radical species generated by one-electro
Chemo- and regioselective reductive transposition of allylic alcohol derivatives via iridium or rhodium catalysis
Lundgren, Rylan J.,Thomas, Bryce N.
supporting information, p. 958 - 961 (2016/01/20)
We report highly chemo- and regioselective reductive transpositions of methyl carbonates to furnish olefin products with complementary regioselectivity to that of established Pd-catalysis. These Rh- and Ir-catalysed transformations proceed under mild conditions and enable selective deoxygenation in the presence of functional groups that are susceptible to reduction by metal hydrides.
Ring Expansion of Epoxides under Br?nsted Base Catalysis: Formal [3+2] Cycloaddition of β,γ-Epoxy Esters with Imines Providing 2,4,5-Trisubstituted 1,3-Oxazolidines
Kondoh, Azusa,Odaira, Kenta,Terada, Masahiro
supporting information, p. 11240 - 11244 (2016/07/06)
A novel ring-expansion reaction of epoxides under Br?nsted base catalysis was developed. The formal [3+2] cycloaddition reaction of β,γ-epoxy esters with imines proceeds in the presence of triazabicyclodecene (TBD) as a superior Br?nsted base catalyst to afford 2,4,5-trisubstituted 1,3-oxazolidines in a highly diastereoselective manner. This reaction involves the ring opening of the epoxides with the aid of the Br?nsted base catalyst to generate α,β-unsaturated esters having an alkoxide at the allylic position, which would formally serve as a synthetic equivalent of the 1,3-dipole, followed by a cycloaddition reaction with imines in a stepwise fashion. This methodology enables the facile synthesis of enantioenriched 1,3-oxazolidines from easily accessible enantioenriched epoxides.