📜三甲基氯硅烷,五氟苯置于正丁基锂体系中,用 乙醚,正己烷 用作溶剂,以48%的收率获得三甲基五氟苯基硅烷 参考文献:固态和溶液中全氟有机基碘试剂的超分子聚集 标题:固态和溶液中全氟有机基碘试剂的超分子聚集 摘要:描述了不同的全氟有机基碘的晶体结构,包括四种新的苯并恶唑衍生物,其r F = N-C 3 F 7,N-C 4 F 9,N-C 8 F 17和c 6 F 5.在所有化合物中,碘原子均显示出显着的路易斯酸度,第二个键合相互作用容易填充第四个配位位点,从而产生方平面配位.尽管这种几何形状是苯并恶唑的非常好模型,但苯并恶唑啉酮衍生物往往会通过额外的弱i ...进一步聚集.O或i ...芳基接触.不同的相互作用导致在固态下形成具有不同尺寸的各种组件.试剂的质子化导致形成完全不同的超分子结构,并通过氢键得到支持.固态试剂的结构特征很好地反映了它们在溶液中的行为,并且i-c(r F)键受lewis碱性溶剂与碘原子的配位作用以及与质子溶剂的氢键作用的影响.与具有更长rf链的衍生物相比,这些溶剂效应对于包含三氟甲基片段的试剂而言更为明显. Doi:10.1002/ejoc.201800358
专利信息
专利号:US-8399684-B2 优先权日:2007-09-17 标题 :Sulfonamide-based organocatalysts and method for their use 发明人:CARTER RICH GARRETT; YANG HUA 权利人:CARTER RICH GARRETT; YANG HUA; OREGON STATE 摘要:Organocatalysts, particularly proline sulfonamide organocatalysts, having a first general formula as follows are disclosed. n nEmbodiments of a method for using these organocatalysts also are disclosed. The method comprises providing a disclosed organocatalyst, and performing a reaction, often an enantioselective or diastereoselective reaction, using the organocatalyst. Solely by way of example, disclosed catalysts can be used to perform aldol reactions, conjugate additions, Michael additions, Robinson annulations, Mannich reactions, α-aminooxylations, α-hydroxyaminations, α-aminations and alkylation reactions. Certain of such reactions are intramolecular cyclizations used to form cyclic compounds, such as 5-or 6-membered rings, having one or more chiral centers Disclosed organocatalysts generally are much more soluble in typical solvents used for organic synthesis than are known compounds. Moreover, the reaction yield is generally quite good with disclosed compounds, as is their enantioselective and diastereoselective effectiveness.
参考标题:The Organocatalytic Synthesis Of Perfluorophenylsulfides Via The Thiolation Of Trimethyl(Perfluorophenyl)Silanes And Thiosulfonates 作者:Jinyun Luo,Muze Lin,Leifang Wu,Zhihua Cai,Lin He,Guangfen Du 摘要:The Organic Superbase T-Bu-P4-Catalyzed Direct Thiolation Of Trimethyl(Perfluorophenyl)Silanes And Thiosulfonates Was Developed. Yields Of Perfluorophenylsulfides Of Up To 97% Under Catalysis Of 5 Mol% T-Bu-P4 Were Achieved. This Method Was Shown To Provide An Efficient Way To Construct The Perfluorophenyl-Sulfur Bond Under Mild Metal-Free Reaction Conditions.
合成参考文献
摘要:Lukevics, E.; Pudova, O., Science of Synthesis, (2002) 4, 310. 摘要:Sandford, G., Science of Synthesis, (2007) 31, 70.