with the corresponding chlorides and alcohols as their predominant fragmentation involved cleavage of the aliphatic carbon-sulphur bond with charge retention on the aliphatic part of the molecule The expected McLafferty rearrangement to yield an intermediate vinyl species was only a minor fragmentation ...
-Selective nucleophiles of low basicity. Preliminary communication. Helv. Chim. Acta 1981, 64, 1552-1557. [CrossRef]Weidmann B,Maycock CD,Seebach D.144. Alkyl, aryl, vinyl, and heterosubstituted organozirconium compounds. -Selective nucleophiles of low basicity.. Helvetica Chimica Acta . 1981...
The rotational isomerism of methyl vinyl ether, ethyl vinyl ether, and n-butyl vinyl ether has been studied by means of the vibrational spectra and normal frequency calculations. The enthalpy difference between the skew and cis isomers i... M Sakakibara,F Inagaki,I Harada,... - 《Bulletin ...
Catalytic enantioselective peroxidation of alpha,beta-unsaturated ketones. Despite the potential of chiral peroxides as biologically interesting or even clinically important compounds, no catalytic enantioselective peroxidation ha... X Lu,Y Liu,B Sun,... - 《Journal of the American Chemical Society》 ...
1). It is striking, however, that the alkylaryl-BCNAs are invariably more potent than the n-alkyl-BCNAs. This may likely be related to the reduced conformational freedom of the alkylaryl side-chain relative to the long alkyl side-chain and, therefore, the alkylaryl-BCNAs may more ...
They are subdivided into alkyl, vinylic, aryl, and acyl halides. In alkyl halides all four bonds to the carbon that bears the halogen are single bonds; in vinylic halides the carbon that bears the halogen is doubly bonded to another carbon; in aryl halides the halogen-bearing carbon is pa...
A highly novel, general, and convenient palladium and copper-catalyzed procedure has been developed for the synthesis of (E)-2-(2-arylvinyl)-3-tosyl-2,3-dihydro-1,3-benzothiazoles 28−40. 3-(2-Aminophenylthio)prop-1-yne 1 reacts with aryl iodides 2−14 under palladium−copper cat...
CO2-promoted photocatalytic aryl migration from nitrogen to carbon for switchable transformation of N-arylpropiolamides Ge Liu Denghui Ma Weiping Su Nature Communications(2024) Photocatalytic vinyl radical-mediated multicomponent 1,4-/1,8-carboimination across alkynes and olefins/(hetero)arenes ...
.sigma.-Bond metathesis for carbon-hydrogen bonds of hydrocarbons and Sc-R (R = H, alkyl, aryl) bonds of permethylscandocene derivatives. Evidence for noninvolvement of the .pi. system in electrophilic activation of aromatic and vinylic C-H bonds ...
The yields are comparable considering the difference in reagents used. When 2-vinylnitrobenzene was used as a substrate, the expected coupling product (3z) was obtained at the same time as an isoxazole co-product (3z0)34,35 (Fig. 7c). The formation of 3z0 suggests that 2-vinylnitroso...