A series of fluoroalkylated 1,2,3-triazoles have been synthetised in significant yields through unexpected intramolecular cyclisations of vinyl azides bearing electron-withdrawing groups. The mechanism proposed in this study implies the participation of a catalytic amount of azide ions in the cyclisations of the vinyl azides to triazoles. The study includes the alkylation of these compounds with various
efficient synthesis and surface properties of new fluorinated geminisurfactants are described. The aim of this study was to investigate the relationships between the molecular structure and the Langmuir layer properties of these fluorinated gemini lipids. The electrostatic ssDNA binding interactions of amino groups included on the spacer were also investigated. The synthesis corresponds to the substitution
Liu, Yan-Song; Huang, Wei-Yuan, Journal of the Chemical Society. Perkin transactions I, 1997, # 6, p. 981 - 987
作者:Liu, Yan-Song、Huang, Wei-Yuan
DOI:——
日期:——
Transformations of <i>F</i>-Alkyl Iodides and Bromides Induced by Nickel(0) Carbonyl
作者:Carl G. Krespan、David A. Dixon
DOI:10.1021/jo970805y
日期:1998.1.1
Adducts of primary F-alkyl iodides with nickel carbonyl are formed readily in donor solvents and pyrolyze at 100-150 degrees C to give olefinic coupling products in high yield. The mechanism proposed to account for the observed chemistry involves preferential alpha-elimination of fluorine with formation of a carbenoid species complex coordinated to nickel. Differences in reaction paths among several types of substrate halides are rationalized on the basis of polarization of the Ni-C bond in the adducts, Support for these proposals is provided by state-of-the-art calculations.
Cantacuzene,D. et al., Journal of the Chemical Society. Perkin transactions I, 1977, p. 1365 - 1371