A versatile and green mechanochemical route for aldehyde–oxime conversions
作者:Christer B. Aakeröy、Abhijeet S. Sinha、Kanishka N. Epa、Christine L. Spartz、John Desper
DOI:10.1039/c2cc36315a
日期:——
A robust, facile and solvent-free mechanochemical path for aldehyde-oxime transformations using hydroxylamine and NaOH is explored; the method is suitable for aromatic and aliphatic aldehydes decorated with a range of substituents.
TiCl3OTf-[bmim]Br: a novel and efficient catalyst system for chemoselective one-pot synthesis of thioamides from arylaldoximes
作者:Jalil Noei、Ahmad R. Khosropour
DOI:10.1016/j.tetlet.2008.09.084
日期:2008.12
The combination of TiCl3OTf with 1-butyl-3-methylimidazolium bromide is found to be an efficient and novel catalytic system for chemoselective one-pot transformation of arylaldoximes to their corresponding thioamides in high to excellent yields.
Macrocycles constitute a broad spectrum of compounds, which play a significant role in host-guest supramolecular chemistry. We have rationally designed an efficient novel synthetic method to synthesize different types of artificial receptive macrocycles containing isoxazoline or isoxazole ring systems. This method involves multiple (double, triple or quadruple) cycloadditions between bifunctional dipoles and bifunctional dipolarophiles. We have presented our synthetic results to show the ease with which this one-pot synthetic method can be extended to synthesize different types of macrocycles such as cyclophanes, bis-calix[4]arenes and silamacrocycles. Hence, with appropriate combination of bifunctional dipoles and bifunctional dipolarophiles, the ring size of macrocycles could be controlled. This multiple cycloadditive macrocyclization will be a useful arsenal for the synthesis of various macrocycles.
Synthesis of 1,3-bis-(5-ferrocenylisoxazole-3-yl) benzene-derived palladium(II) acetate complex and its application in Mizoroki–Heck reaction in an aqueous solution
作者:Yong-jia Shang、Jian-wei Wu、Chen-li Fan、Jin-song Hu、Ben-ye Lu
DOI:10.1016/j.jorganchem.2008.06.020
日期:2008.9
and characterization of 1,3-bis-(5-ferrocenylisoxazole-3-yl) benzene-derived palladium(II) acetate complex were described and its application in Heck coupling reactions in an aqueous solution was studied. Complex 5 had been demonstrated to be a highly stable, active and efficientcatalyst for Mizoroki–Heck coupling reactions.