A new convenient synthesis of trisubstituted 1,3-dioxole-4-carboxylates from methyl 2-diazo-3-oxobutyrate and aldehydes
作者:Miguel E. Alonso、A.Wladimir Chitty
DOI:10.1016/s0040-4039(01)82098-0
日期:——
The interaction between methyl 2-diazo-3-oxobutyrate and the carbonyl group of aliphatic, aromatic, and α,β-unsaturated aldehydes under bis(hexafluoroacetoacetonato)copper(II) catalysis furnishes 1,3-dioxole-4-carboxylates in preparatively useful yields. The apparent 1,3-dipolar cycloadditionreaction of the metal carbene complex is remarkably free of competing processes.
ALONSO, M. E.;CHITTY, A. W., TETRAHEDRON LETT., 1981, 22, N 42, 4181-4184
作者:ALONSO, M. E.、CHITTY, A. W.
DOI:——
日期:——
Divergence of Carbonyl Ylide Reactions as a Function of Diazocarbonyl Compound and Aldehyde Substituent: Dioxolanes, Dioxolenes, and Epoxides
作者:Albert E. Russell、Jonathan Brekan、Luisa Gronenberg、Michael P. Doyle
DOI:10.1021/jo049403y
日期:2004.8.1
The products from dirhodium(II) acetate-catalyzed reactions between diazocarbonyl compounds and a series of benzaldehydes demonstrate the extent of competition between intramolecular and intermolecular trapping of carbonylylide intermediates and the electronic effects that govern these transformations. With dimethyl diazomalonate, competition exists between dioxolane and epoxide formation so that