The Bergman reaction as a synthetic tool: advantages and restrictions
作者:Daniel M Bowles、Grant J Palmer、Chad A Landis、John L Scott、John E Anthony
DOI:10.1016/s0040-4020(01)00247-2
日期:2001.4
The Bergman cycloaromatization reaction efficiently converts easily prepared acyclic enediynes into aromatic rings. In order to prepare larger, functionalized fused aromatic systems using this reaction, a thorough understanding of how functionalization affects cycloaromatization is necessary. We present here our studies on the influence of substituents at three different functionalization sites on
234. The synthesis of hydrocarbons of high molecular weight. Part II. Some di- and tri-n-alkylnaphthalenes
作者:B. Bannister、B. B. Elsner
DOI:10.1039/jr9510001061
日期:——
Tellurium-Mediated Cycloaromatization of Acyclic Enediynes under Mild Conditions
作者:Chad A. Landis、Marcia M. Payne、David L. Eaton、John E. Anthony
DOI:10.1021/ja0389467
日期:2004.2.1
cycloaromatization product. We have developed conditions that form sodium telluride from inexpensive tellurium metal in situ, and that also perform the desilylation of silylated arenediynes in the same process. Under our conditions, we are able to perform desilylation and cycloaromatization at temperatures as low as 40 degrees C and on a scale as large as 5 g in standard laboratoryglassware.
无环烯二炔的环芳构化通常需要非常高的温度(> 160 摄氏度)和稀释条件才能以合成有用的产率进行。这些条件阻碍了反应产量,抑制了该反应在材料的大规模生产中的应用。碲化钠与无环芳二炔反应生成相应的碲碱,在温和加热下会挤出 Te 度,生成环芳构化产物。我们已经开发出从廉价的碲金属原位形成碲化钠的条件,并在同一过程中对甲硅烷基化芳烃进行脱甲硅烷基化。在我们的条件下,我们能够在低至 40 摄氏度的温度和大至 5 克的标准实验室玻璃器皿中进行脱甲硅烷基化和环芳构化。