Anagram & Information om | Engelska ordet ALLENE

Exempel på hur du använder ALLENE i en mening

• Some other notable work include the synthesis of fulvalene, the discoveries of the Doering-LaFlamme allene synthesis and the Parikh-Doering oxidation, prediction of the existence of bullvalene as a fluxional molecule, and elucidation of the mechanism of the Baeyer–Villiger oxidation.
• It is a component of MAPD gas—along with its isomer propadiene (allene), which was commonly used in gas welding.
• This allene derivative which, in the presence of cuprous chloride, rearranges to 2-chloro-1,3-butadiene:.
• A 6-endo-dig pattern was observed in an allene - alkyne 1,2-addition / Nazarov cyclization tandem catalysed by a gold compound:.
• The reaction mechanism begins with the protonation of the alcohol which leaves in an E1 reaction to form the allene from the alkyne.
• The Skattebøl rearrangement is an organic reaction for converting a geminal dihalo cyclopropane to an allene using an organolithium base.
• Other compounds believed to be indicated by the data and associated models include ammonia, polyynes, amines, ethylenimine, deuterium hydride, allene, 1,3 butadiene and any number of more complex chemicals in lower concentrations, as well as carbon dioxide and limited quantities of water vapour.
• In two of the isomers, the three carbon atoms are connected in an open chain, but in one of them (propadiene or allene; I) the carbons are connected by two double bonds, while in the other (propyne or methylacetylene; II) they are connected by a single bond and a triple bond.
• Spiropentadiene was synthesised from bistrimethylsilylpropynone 1 by reaction with p-toluenesulfonylhydrazide to tosylhydrazone 2 followed by treatment with sodium cyanoborohydride to allene 3 and followed by two successive reactions with chlorocarbene generated from methyllithium and dichloromethane to spiro compound 5.
• In a study in which an enantioenriched substituted cyclopropyl Grignard reagent was prepared, the reaction was shown to give the allene with very high levels of enantiospecificity, suggesting a concerted mechanism.
• Specifically, a hydroperoxide of linolenic acid is the substrate for the enzyme allene oxide synthase.
• Both the first step (Mitsunobu reaction) and third step (sigmatropic reaction) are stereospecific, so the chirality of the propargyl alcohol controls the chirality of the resulting allene.

Förberedelsen av sidan tog: 282,07 ms.