CobaltHomoaldolThe scope of chromium(II)/cobalt(I)-catalyzed Takai-Utimoto reactions was extended to substrates with unprotected reactive functional groups.In the presence of a higher chlorosilane and manganese the first chromium(II)/cobalt(I)-catalyzed ver sion for the coupling of oxoalkylhalides ...
Olefinic-Ester Cyclizations Using Takai—Utimoto Reduced Titanium Alkylidenes.carbohydratesring closure reactionsmetathesis reactionsFor Abstract see ChemInform Abstract in Full Text.doi:10.1002/chin.200604188Utpal MajumderDep. Chem., Univ. Utah, Salt Lake City, UT 84112, USAJon D. Rainier...
; The scope of chromium(II)/cobalt(I)-catalyzed Takai–Utimoto reactions was extended to substrates with unprotected reactive functional groups. In the presence of a higher chlorosilane and manganese the first chromium(II)/cobalt(I)-catalyzed version for the coupling of oxoalkylhalides with ...
The scope and limitations of the Takai–Utimoto reagent to induce the cyclization of olefinic-esters is described. Critical is the steric environment about both the ester and the olefin. Mechanistically, these results support the hypothesis that cyclized product comes from an olefin metathesis, ...
Takai—Utimoto Reactions of Oxoalkylhalides Catalytic in Chromium and Cobalt.alcohols (benzene compounds)ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or ...
Titanium; The scope and limitations of the Takai–Utimoto reagent to induce the cyclization of olefinic-esters is described. Critical is the steric environment about both the ester and the olefin. Mechanistically, these results support the hypothesis that cyclized product comes from an olefin ...
Discusses the Takai-Utimoto reaction of acrolein acetals with aldehydes. Methods provided for the stereo-selective construction of arrays of acyclin stereogenic centers; Methodology of the reaction; Observations made from the reaction; Optimized conditions from the experiment.Boeckman...
A Variant of the TakaiUtimoto Reaction of Acrolein Acetals with Aldehydes Catalytic in Chromium: A Highly Stereoselective Route to Anti Diol Derivativesaddition reactionsstereochemistry (general, optical resolution)alcohols (acyclic compounds)alcohols (benzene compounds)...