Tungsten hexachloride epoxides

Iron trichloride/tungsten hexachloride, titanium trichloride/LAH and WCle/LAH have also been examined, and show similar results to the Sharpless systems mentioned above. In these cases the stereochemical course is not determined by the kind of reagent instead, frfl 5-alkenes are predominantly formed from both cis- and rrowj-epoxides (equations 40 and 41). [Pg.889]

DEOXYGENATION, EPOXIDES Ferric chloride-n-Butyllithium. Potassium seleno-cyanate. Sodium cyclopentadienyldicarbonylferrate. Tungsten hexachloride. [Pg.779]

Epoxides are stereoselectively reduced to olehns by lower-valent tungsten halide derivatives prepared from tungsten hexachloride and butyl-lithium. A reagent obtained by addition of lithium iodide to tungsten hexachloride is also effective. ... [Pg.87]

Tropilidene, MA Diels-Alder adduct, 117 Tropolones, MA Diels-Alder adduct, 117 Tropone, MA Diels-Alder adduct, 118 Trypsin, MA copolymer coupled, 448, 451 Tungsten hexachloride, 289 Tungsten oxide, promoter for MA catalyst, 36 Tungstic acid, epoxidation catalyst, 69... [Pg.869]

Big Chemical Encyclopedia