Asymmetric Transfer Hydrogenation of 1-Naphthyl Ketones by an <i>ansa</i>-Ru(II) Complex of a DPEN-SO<sub>2</sub>N(Me)-(CH<sub>2</sub>)<sub>2</sub>(η<sup>6</sup>-<i>p</i>-Tol) Combined Ligand
作者:Andrea Kišić、Michel Stephan、Barbara Mohar
DOI:10.1021/ol400393j
日期:2013.4.5
The first second-generation designer Ru(II) catalyst 1b featuring an enantiopure N,C-(N-ethylene-N-methyl-sulfamoyI)-tethered (DPEN-k(2)N,N)/n(6)toluene hybrid ligand Is introduced. Using an SIC 1000 in HCO2H Et3N 5:2 transfer hydrogenation medium, secondary 1-naphthyl alcohols are obtained in up to >99.9% ee under mild conditions. Mechanistic factors are discussed.
10. Anionotropic systems. Part VII. Reversible rearrangements of the 1-naphthyl-3-phenylallyl alcohols. A kinetic determination of the conjugation energies of the α- and β-vinylnaphthalene systems
作者:E. A. Braude、P. H. Gore
DOI:10.1039/jr9590000041
日期:——
Reactions of 1-Bromo-2,3-Epoxypropane with Samarium Diiodide: First Observation of Carbon-Carbon Bond Cleavage of Oxiranylmethyl Radical under the Single Electron Transfer Conditions
作者:E Hasegawa
DOI:10.1016/00404-0399(50)0975i-
日期:1995.7.17
Metal free chemoselective reduction of α-keto amides using TBAF as catalyst
作者:N. Chary Mamillapalli、Govindasamy Sekar
DOI:10.1039/c4ra13090a
日期:——
metal and ligand free chemoselective reduction of the keto group and complete reduction of the both keto and amide groups of α-keto amide with hydrosilanes using tetrabutylammoniumflouride (TBAF) as catalyst have been accomplished. This methodology affords an efficient and economic route for the synthesis of biologically important α-hydroxyamides and β-amino alcohols. The other important advantage of
The design of radical clocks to probe the reactivity of the intermediates in arylmethyl ester photochemistry
作者:S.M. Nevill、J.A. Pincock
DOI:10.1139/v97-027
日期:1997.2.1
The photochemistry in methanol of the esters 1–6was examined. These reactions normally proceed through radical pairs that result from homolytic cleavage of the carbon–oxygen bond in the excited sin...