23 research outputs found
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Controlled synthesis of polyenes by catalytic methods
The synthesis of the following polyenes, utilizing, a molybdenum catalyst, is described: vinyl alkylidene, and ortho-trimethylsilyl-phenylacetylene. (CBS)
A kinetic study of the thermal decomposition of pentabenzyltantalum
The thermal decomposition of (C6H5CH2)5 Ta occurs by an intramolecular hydrogen transfer, not by an intermolecular free-radical chain reaction. \ua9 1978.Peer reviewed: YesNRC publication: Ye
Operationally simple, efficient, and diastereoselective synthesis of cis-2,6-disubstituted-4-methylene tetrahydropyrans catalyzed by triflic acid
A highly efficient (0.01 mol % of TfOH), operationally simple (room temperature, inexpensive, and commercially available catalyst), and diastereoselective (up to >98% de) method for Br\uf8nsted acid-catalyzed reaction of enol ethers to form cis-2,6-disubstituted tetrahydropyrans is disclosed
Enantioselective synthesis of cyclic enol ethers and all-carbon quaternary stereogenic centers through catalytic asymmetric ring-closing metathesis
The first examples of catalytic asymmetric ring-closing metathesis (ARCM) reactions of enol ethers are reported. To identify the most effective catalysts, various chiral Mo- and Ru-based catalysts were screened. Although chiral Ru catalysts (those that do not bear a phosphine ligand) promote ARCM in some cases, such transformations proceed in 98%)
Electroluminescenscence from New Polynorbornenes that Contain Blue-Light-Emitting and Charge-Transport Side Chains
info:eu-repo/semantics/publishe