A Cheap, Catalytic, Scalable, and Environmentally Benign Method for Alkene Epoxidations
作者:Benjamin S. Lane、Kevin Burgess
DOI:10.1021/ja004000a
日期:2001.3.1
aliphatic alkenes can be selectively epoxidized in the presence of terminal alkenes. This experiment also implies that the allylic hydroxyl does not activate the terminal alkene via a directing effect. Entries 9-12 illustrate that epoxidations of arylsubstituted alkenes proceed smoothly; qualitatively, the rates of these reactions were observed to be appreciably faster than for aliphatic alkenes. The only
烯烃环氧化的良性方法 Benjamin S. Lane 和 Kevin Burgess* 德克萨斯 A & M 大学化学系 PO Box 30012, College STAtion, Texas 77842-3012 收到 2000 年 11 月 17 日 本文报告了一种简单的方法,其中锰 (2+)盐,例如 MnSO4,使用 30% 的过氧化氢水溶液作为末端氧化剂催化烯烃的环氧化。通过将底物和催化剂溶解在 DMF 或叔丁醇中,然后缓慢加入 30% 过氧化氢和 0.2 M 碳酸氢钠缓冲液的混合物来进行反应。这种方法在成本、简单性和环境因素方面有几个理想的属性。该项目来自在筛选新的、手性的、1,4、7-三氮杂环壬烷 (TACN) 配合物作为潜在的不对称环氧化催化剂。在一个简单的平板装置 1 中的高通量筛选表明,没有任何有机配体的简单锰 (2+) 盐介导了环氧化,但仅在碳酸氢盐缓冲液中。在基于
Process for the preparation of mononitro-1,2,3,4-tetrahydroanthraquinones
申请人:Produits Chimiques Ugine Kuhlmann
公开号:US04283345A1
公开(公告)日:1981-08-11
A process is disclosed for the preparation of mononitro derivatives of 1,2,3,4-tetrahydro-anthraquinone from 1,4,4a,9a-tetrahydro-anthraquinone, in which a thermal pretreatment of the 1,4,4a,9a-tetrahydro-anthraquinone is carried out in the presence of a hydrogenation catalyst in an inert atmosphere and in the absence of oxidizing or reducing agents, the anthraquinone by-produced as well as the catalyst are separated and the mixture of 1,2,3,4-tetrahydro-9,10-anthracenediol and 1,2,3,4-tetrahydro-anthraquinone obtained is subjected to a nitration reaction.
New Catalytic Reactions in the Presence of Mo-V-Phosphoric Heteropoly Acid Solutions
作者:E. G. Zhizhina、M. V. Simonova、V. V. Russkikh、K. I. Matveev
DOI:10.1007/s11167-005-0386-9
日期:2005.5
The possibility of performing new catalytic reactions in the presence of solutions of H x+3PMo12−x . VxO40 Mo-V-phosphoric heteropoly acids was examined.
研究了在 H x+3PMo12-x .VxO40 Mo-V-磷酸杂多酸溶液中进行新催化反应的可能性进行了研究。
Process for the preparation of 1,2,3,4-tetrahydro-9,10-anthracene-diol
申请人:PCUK - Produits Chimiques Ugine Kuhlmann
公开号:US04365100A1
公开(公告)日:1982-12-21
A process for the preparation of 1,2,3,4-tetrahydro-9,10-anthracene-diol, in which catalytic hydrogenation of 1,4,4a,9a-tetrahydro-anthraquinone is carried out in the liquid phase to give 1,2,3,4,4a,9a-hexahydro-9,10-anthracene-dione followed by isomerization of the latter in the presence of an acid to give 1,2,3,4-tetrahydro-9,10-anthracene-diol.
meso-Tetraphenylporphyrin with a pi-system extended by fusion with anthraquinone
作者:Mikhail A. Filatov、Ernesta Heinrich、Katharina Landfester、Stanislav Baluschev
DOI:10.1039/c5ob00884k
日期:——
Fusion of a porphyrin with anthraquinone through the synthesis of a suitably substituted pyrrole that can be cyclotetramerized and the optical properties of the resulting molecular system are described.