Direct synthesis of furans by 3 + 2 cycloadditions between rhodium(II) acetate stabilized carbenoids and acetylenes
作者:Huv M.L. Davies、Karen R. Romines
DOI:10.1016/s0040-4020(01)85968-8
日期:1988.1
Whan appropriate substituents are used, rhodium(II) acatate catalyzed decomposition of diazocarbonyls in the presence of acetylenes results in the formation of furans, derived from dipolar intermediates.
Oxidative Addition of 1,3-Dicarbonyl Compounds to Terminal Acetylenes Mediated by Cerium(IV) Ammonium Nitrate
作者:Ani Deepthi、Akhil Sivan、Vidya Nandialath
DOI:10.1055/s-0030-1260095
日期:2011.8
Cerium(IV) ammoniumnitrate mediated oxidative addition of 1,3-dicarbonyl compounds to terminal acetylenes to yield multisubstituted furan derivatives is reported here. The simplicity of the reaction and the ease of execution are particularly noteworthy. cerium(IV) ammoniumnitrate - oxidative addition - terminal acetylenes - multisubstituted furans - 1,3-dicarbonyl compounds
A conceptually new strategy has been described for the mild, practical, and environmentally friendly preparation of naphthols and furans using a visible-light promoted photoredox neutral approach. These reactions between accessible electron-deficient bromides and commercially available alkynes could be carried out at room temperature in good-to-excellent chemical yields without any external stoichiometric oxidants.
DAVIES, HUW M. L.;ROMINES, KAREN R., TETRAHEDRON, 44,(1988) N 11, 3343-3348