منابع مشابه
Mono- and di-cationic hydrido boron compounds.
Brønsted acid HNTf2 (Tf = SO2CF3) mediated dehydrogenative hydride abstraction from (L(1))BH3 () and (L(2))BH3 () (L(1) = IPrCH2 = 1,3-(2,6-di-isopropylphenyl)imidazol-2-methylidene (); L(2) = SIPrCH2 = 1,3-(2,6-di-isopropylphenyl)imidazolidin-2-methylidiene ()) affords thermally stable hydride bridged mono-cationic hydrido boron compounds [{(L(1))BH2}2(μ-H)](NTf2) () and [{(L(2))BH2}2(μ-H)](NT...
متن کاملSynthesis and Properties of Mono-, Di- and Trienoic
Methyl trans-12-octadecenoate-9,10-dz was obtained from methyl threo-12,13-dihydroxy-eis-9-octadecenoate by a sequence of reactions involving formation of an ethoxydioxolane, catalytic deuteration of the double bond, and conversion of the ethoxvdioxolane group to an ethylenic bond. Methyl cisand trans-12-oct;decenoate15,15,16,16-d. and methyl cisand trans-12-octadecenoate-9 ,10,15,15,16,16-d6 w...
متن کاملMolecular species of mono-, di-, and triphosphoinositides of bovine brain.
The mono-, di-, and triphosphoinositides of bovine brain were isolated by chromatography on columns of DEAE-cellulose, alumina, and silicic acid. The major molecular species in each phosphoinositide class were identified and quantitatively estimated by combined thin-layer and gas-liquid chromatography of the component diglycerides, which were released by hydrolysis with a specific brain phospho...
متن کاملRhodium(III)-catalyzed oxidative mono- and di-olefination of isonicotinamides.
[RhCp*Cl(2)](2) can catalyze the oxidative coupling of secondary isonicotinamides with activated olefins using Cu(OAc)(2) as an oxidant. The selectivity can be controlled by the solvent. In MeCN, the mono-olefination and two-fold oxidation reaction is the major pathway, while in THF this reaction gave mostly diolefination products. In both cases, the coupled products contain an exocyclic C=C bond.
متن کاملPalladium-catalyzed ortho-alkenylation of aryl hydrogen phosphates using a new mono-phosphoric acid directing group.
A highly efficient Pd-catalyzed ortho-alkenylation is reported using a mono-phosphoric acid-directing group for the first time. This phosphoric acid-directing group is successfully utilized for the synthesis of various alkenylated products and offers a new approach to transition-metal-catalyzed C-H activation.
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ژورنال
عنوان ژورنال: Science
سال: 1910
ISSN: 0036-8075,1095-9203
DOI: 10.1126/science.32.832.836-a