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- Nysted_reagent abstract "The Nysted reagent is a reagent used in organic synthesis for the methenylation of a carbonyl group. It was discovered in 1975 by Leonard N. Nysted in Chicago, Illinois. It was prepared by reacting dibromomethane and activated zinc in THF. The process is known as Nysted olefination. There is no confirmed mechanism but a proposed mechanism can be seen to bottom right.A similar reagent is Tebbe's reagent. In the Nysted olefination, the Nysted reagent reacts with TiCl4 to methylenate a carbonyl group. The biggest problem with these reagents are that the reactivity has not been well documented. It is believed that the TiCl4 acts as a mediator in the reaction. Nysted reagent can methylenate different carbonyl groups in the presence of different mediators. For example, in the presence of BF3•OEt2, the reagent will methylenate aldehydes. On the other hand, in the presence of TiCl4, TiCl3 or TiCl2 and BF3•OEt2, the reagent can methylenate ketones. Most commonly, it is used to methylenate ketones because of their general difficulty to methylenate due to crowding around the carbonyl group. Nysted is able to get into the tight space and methylenate the carbonyl group easily. There is little research on Nysted reagent because of the hazards and high reactivity and the difficulty of keeping the reagent stable while it is in use. More specifically, it can form explosive peroxides when exposed to air and is extremely flammable. Also, it reacts violently with water. These make this reagent very dangerous to work with.".
- Nysted_reagent iupacName "cyclo-Dibromodi-μ-methylene[μ-(tetrahydrofuran)]trizinc".
- Nysted_reagent thumbnail Nysted_Reagent.png?width=300.
- Nysted_reagent wikiPageExternalLink Acros_Search_Results.aspx?search_type=MSDS2&tg=29&search=(field29.9=1036102+or+field29.4=1271665)+and+Field29.8=en&for=acro2&sup=AcrosEU&lang=en.
- Nysted_reagent wikiPageID "19647464".
- Nysted_reagent wikiPageLength "4289".
- Nysted_reagent wikiPageOutDegree "12".
- Nysted_reagent wikiPageRevisionID "696300246".
- Nysted_reagent wikiPageWikiLink Carbonyl.
- Nysted_reagent wikiPageWikiLink Category:Organometallic_compounds.
- Nysted_reagent wikiPageWikiLink Category:Reagents_for_organic_chemistry.
- Nysted_reagent wikiPageWikiLink Category:Zinc_compounds.
- Nysted_reagent wikiPageWikiLink Methenylation.
- Nysted_reagent wikiPageWikiLink Organic_synthesis.
- Nysted_reagent wikiPageWikiLink Organozinc_compound.
- Nysted_reagent wikiPageWikiLink Petasis_reagent.
- Nysted_reagent wikiPageWikiLink Reagent.
- Nysted_reagent wikiPageWikiLink Tebbes_reagent.
- Nysted_reagent wikiPageWikiLink Wittig_reaction.
- Nysted_reagent wikiPageWikiLink File:Nysted_Reaction.png.
- Nysted_reagent wikiPageWikiLinkText "Nysted reagent".
- Nysted_reagent imagefile "Nysted_Reagent.png".
- Nysted_reagent imagename "Structural formula of the Nysted reagent".
- Nysted_reagent imagesize "120".
- Nysted_reagent iupacname "cyclo-Dibromodi-μ-methylene[μ-]trizinc".
- Nysted_reagent verifiedrevid "436130941".
- Nysted_reagent wikiPageUsesTemplate Template:Cascite.
- Nysted_reagent wikiPageUsesTemplate Template:Chembox.
- Nysted_reagent wikiPageUsesTemplate Template:Chembox_Hazards.
- Nysted_reagent wikiPageUsesTemplate Template:Chembox_Identifiers.
- Nysted_reagent wikiPageUsesTemplate Template:Chembox_Properties.
- Nysted_reagent wikiPageUsesTemplate Template:Chembox_Related.
- Nysted_reagent wikiPageUsesTemplate Template:Chemspidercite.
- Nysted_reagent wikiPageUsesTemplate Template:Reflist.
- Nysted_reagent wikiPageUsesTemplate Template:Stdinchicite.
- Nysted_reagent subject Category:Organometallic_compounds.
- Nysted_reagent subject Category:Reagents_for_organic_chemistry.
- Nysted_reagent subject Category:Zinc_compounds.
- Nysted_reagent hypernym Reagent.
- Nysted_reagent type ChemicalCompound.
- Nysted_reagent type ChemicalSubstance.
- Nysted_reagent type Reagent.
- Nysted_reagent type ChemicalObject.
- Nysted_reagent type Thing.
- Nysted_reagent type Q11173.
- Nysted_reagent comment "The Nysted reagent is a reagent used in organic synthesis for the methenylation of a carbonyl group. It was discovered in 1975 by Leonard N. Nysted in Chicago, Illinois. It was prepared by reacting dibromomethane and activated zinc in THF. The process is known as Nysted olefination. There is no confirmed mechanism but a proposed mechanism can be seen to bottom right.A similar reagent is Tebbe's reagent.".
- Nysted_reagent label "Nysted reagent".
- Nysted_reagent sameAs Q7071299.
- Nysted_reagent sameAs واکنشگر_نایستد.
- Nysted_reagent sameAs Reagente_de_Nysted.
- Nysted_reagent sameAs m.04n3f9z.
- Nysted_reagent sameAs Nistediv_reagens.
- Nysted_reagent sameAs Nistediv_reagens.
- Nysted_reagent sameAs Q7071299.
- Nysted_reagent wasDerivedFrom Nysted_reagent?oldid=696300246.
- Nysted_reagent depiction Nysted_Reagent.png.
- Nysted_reagent isPrimaryTopicOf Nysted_reagent.