926-02-3Relevant articles and documents
Synthesis and C-alkylation of hindered aldehyde enamines
Hodgson, David M.,Bray, Christopher D.,Kindon, Nicholas D.,Reynolds, Nigel J.,Coote, Steven J.,Um, Joann M.,Houk
body text, p. 1019 - 1028 (2009/07/04)
A new reactivity mode of hindered lithium amides with terminal epoxides is described whereby aldehyde enamines are produced via a previously unrecognized reaction pathway. Some of these aldehyde enamines display unprecedented C-alkylation reactivity toward unactivated primary and secondary alkyl halides. For comparison, the reactivity of aldehyde enamines synthesized via a traditional condensation method was examined. C-rather than N-alkylation was the dominant reaction pathway found with a range of electrophiles, making this route to α-alkylated aldehydes more synthetically useful than previously reported.
Synthesis of allyl and alkyl vinyl ethers using an in situ prepared air-stable palladium catalyst. Efficient transfer vinylation of primary, secondary, and tertiary alcohols
Bosch, Martin,Schlaf, Marcel
, p. 5225 - 5227 (2007/10/03)
An air-stable palladium catalyst formed in situ from commercially available components efficiently catalyzed the transfer vinylation between butyl vinyl ether and various allyl and alkyl alcohols to give the corresponding allyl and alkyl vinyl ethers in 61-98% yield in a single step.
Method for producing alkenyl ethers
-
, (2008/06/13)
Alkenyl ethers are prepared by reacting the corresponding alcohols or phenols with acetylenes in the liquid phase in the presence of basic alkali metal compounds and a cocatalyst comprising compounds of the formula (Ia) and/or (Ib) R1O—(CH2CH2CH2CH2O)n—H??(Ia) R1O—(CH2CH2CH2CH2O)n—H2,??(Ia) where R1, R2 are, independently of one another, C1-C6-alkyl or C2-C6-alkenyl, or R1 and R2 together form a butyl unit and n is 1, 2, 3, 4 or 5.
17O NMR Spectra of Vinyl Ethers
Taskinen, Esko,Hellman, Jaakko
, p. 353 - 357 (2007/10/02)
The 17O spectra of 58 α,β-unsaturated (vinyl) ethers were recorded in CDCl3 solution.The dependence of the chemical shift on the number and position of alkyl substituents in the vinyl moiety and on the nature and bulkiness of the alkoxy group was explored.The oxygen chemical shifts proved to be sufficiently sensitive to structural factors to make 17O NMR spectroscopy a useful tool in the investigation of the electronic and spatial syructures of vinyl ethers. - Keywords: NMR 17O NMR Vinyl ethers