Synonymer & Information om | Engelska ordet ALKYNYL

Exempel på hur man kan använda ALKYNYL i en mening

• As a consequence, localized alkyl, alkenyl/aryl, and alkynyl carbanions assume trigonal pyramidal, bent, and linear geometries, respectively.
• Carboranes have been prepared by many routes, the most common being addition of alkynyl reagents to boron hydride clusters to form dicarbon carboranes.
• But for propyne, it is generally accepted that this is due to hyperconjugation between the alkyl and alkynyl parts.
• Diastereoselectivity can be high for Z-alkene with alkynyl, alkenyl, or aryl anion-stabilizing group.
• This step proceeds with aryl, vinyl, alkynyl, and acyl halides, acetates, or triflates, with substrates following standard oxidative addition relative rates (I>OTf>Br>>Cl).
• where R and R′ can be, but are not limited to, an alkyl, aryl, alkynyl, allyl, halogen, or pseudohalogen group.
• Reagents are derived from alkyl, alkynyl, and alkenyl organometallic reagents as well as enolates have been described.
• These include alkylation from alkyl halides, Suzuki-type reaction with boronic esters, borylation with bis(pinacolato)diboron, protonation with i-PrOH, decarboxylative alkynylation with alkynyl carboxylic acids.
• Alkyl, alkynyl, and alkenyl organocerium derivatives are prepared from the transmetallation of the respective organolithium or Grignard reagents, and are more nucleophilic but less basic than their precursors.
• Jamaicamide A has several unusual functionalities, including an alkynyl bromide, vinyl chloride, β-methoxy eneone system, and pyrrolinone ring.

Förberedelsen av sidan tog: 2 457,95 ms.