在这里,我们报道了由对甲苯磺酸促进苯并稠合的O杂环的首次发散合成,该反应促进了级联反应,涉及炔烃水合,双环化,环收缩和炔醇裂解C-O键。通过获得熔融的苯并[ b ]氧杂环庚烷中间体的X射线结构来验证反应机理。而且,一些获得的衍生物可以转化为2,3-二取代的萘醌,作为天然产物和生物活性分子中的重要结构基序。
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
An organotransition-metal synthesis of naphthoquinones
作者:Lanny S. Liebeskind、Sherrol L. Baysdon、Michael S. South
DOI:10.1021/ja00544a057
日期:1980.11
LIEBESKIND, L. S.;BAYSDON, S. L.;SOUTH, M. S.;IYER, S.;LEEDS, J. P., TETRAHEDRON, 1985, 41, N 24, 5839-5853
作者:LIEBESKIND, L. S.、BAYSDON, S. L.、SOUTH, M. S.、IYER, S.、LEEDS, J. P.
DOI:——
日期:——
<i>p</i>-TsOH promoted synthesis of benzo-fused O-heterocycles from alkynols<i>via</i>ring contraction and C–O scission strategy
作者:Gopal Chandru Senadi、Jeh-Jeng Wang
DOI:10.1039/c8gc00749g
日期:——
Here, we report the first divergent synthesis of benzo-fused O-heterocycles by p-toluene sulfonic acid promoted cascade reactions involving alkyne hydration, doublecyclization, ring contraction and C–O bond cleavage from alkynols. The reaction mechanism was validated by obtaining the X-ray structure of fused benzo[b]oxepine intermediates. Moreover, some of the obtained derivatives could be transformed
在这里,我们报道了由对甲苯磺酸促进苯并稠合的O杂环的首次发散合成,该反应促进了级联反应,涉及炔烃水合,双环化,环收缩和炔醇裂解C-O键。通过获得熔融的苯并[ b ]氧杂环庚烷中间体的X射线结构来验证反应机理。而且,一些获得的衍生物可以转化为2,3-二取代的萘醌,作为天然产物和生物活性分子中的重要结构基序。
LIEBESKIND L. S.; BAYSDON S. L.; SOUTH M. S., J. AMER. CHEM. SOC., 1980, 102, NO 24, 7397-7398