The development of an organotransition metal synthesis of quinones
作者:Lenny S. Liebeskind、Sherrol L. Baysdon、Michael S. South、Suresh Iyer、James P. Leeds
DOI:10.1016/s0040-4020(01)91423-1
日期:1985.1
A new and very general synthesis of quinones is described from conception to the current state of maturity. The chemistry relies on a convergent joining of a transition metalcomplex and an alkyne to provide benzoquinones (from maleoylmetal complexes) and naphthoquinones (from phthaloylmetal complexes). Significant aspects of this chemistry are its generality (terminal, internal, electron rich, and
Photochemical rearrangement of some cyclobutene-1,2-diones in the presence of cyclopentadiene: a mechanistic study
作者:Robert D. Miller、Stephan Kirchmeyer
DOI:10.1021/jo00053a019
日期:1993.1
The irradiation of a variety of substituted cyclobutene-1,2-diones in the presence of cyclopentadiene leads to the formation of 1:1 adducts which contain the basic 5-spirocyclopropyl DELTA(alpha,beta)-butenolide unit. The structural similarity of these adducts to those produced originally upon irradiation with benzocyclobutene-1,2-dione in the presence of olefins suggested a possible common mechanism involving the formation of a ring-expanded oxacarbene intermediate. However, mechanistic studies on the nonaromatic cyclobutendione derivatives have demonstrated that it is not the oxacarbene which is the precursor to the butenolide adducts but rather is an alpha-ketenylcyclobutanone produced by cycloaddition of the photochemically generated bis-ketene to cyclopentadiene.
LIEBESKING, L. S.;BAYSDON, SH. L., TETRAHEDRON LETT., 1984, 25, N 17, 1747-1750
作者:LIEBESKING, L. S.、BAYSDON, SH. L.
DOI:——
日期:——
A simple synthesis of some cyclic and acyclic cyclobutenediones
作者:Lanny S. Liebeskind、Sherrol L. Baysdon
DOI:10.1016/s0040-4039(01)90031-0
日期:——
Cyclobutenediones can be prepared from cyclic and acyclic ketones by a simple four step procedure.
环丁二烯可以通过简单的四步法从环状和无环酮制得。
Convergent, high-yield, regioselective synthesis of substituted benzoquinones from maleoylcobalt complexes and alkynes
作者:Lanny S. Liebeskind、James P. Leeds、Sherrol L. Baysdon、Suresh Iyer