Deprotonative C–H Silylation of Functionalized Arenes and Heteroarenes Using Trifluoromethyltrialkylsilane with Fluoride
作者:Midori Sasaki、Yoshinori Kondo
DOI:10.1021/ol503671b
日期:2015.2.20
A highly selective C–H silylation reaction of functionalizedarenes and heteroarenes was developed using Ruppert–Prakash reagent (TMSCF3) activated by alkali metal fluoride. TMSCF3 is considered to play dual roles as a precursor of a mild base and also as a silicon electrophile. The silylation is compatible with sensitive functional groups such as halogen and nitro groups.
method for the deprotonative silylation of aromatic C–H bonds has been developed using trifluoromethyltrimethylsilane (CF3SiMe3, Ruppert–Prakash reagent) and a catalytic amount of fluoride. In this reaction, CF3SiMe3 is considered to act as a base and a silicon electrophile. This process is highly tolerant to various functional groups on heteroarenes and benzenes. Furthermore, this method can be applied
作者:Ruilian Wu、Jeffry S. Schumm、Darren L. Pearson、James M. Tour
DOI:10.1021/jo960897b
日期:1996.1.1
the core in a single operation, thus making the syntheses highly convergent. In the cases of the larger functionalized systems, alkyl substituents on the thiophenes afford soluble materials. In order to prepare the molecules with >50 Å lengths, an iterative divergent/convergent approach had to be utilized for the construction of oligo(thiophene-ethynylene) branching arms. Organopalladium-catalyzed procedures
Naturally Occurring5-[(2-Thienyl)Ethynyl] Thiophene-2-Carbal-Dehyde Through a Short Synthesis of Diarylacetylenes
作者:Maurizio D'Auria
DOI:10.1080/00397919208019096
日期:1992.8
Title compound and related diarylacetylenes were synthesized via a one-pot procedure starting from aryliodide and trimethylsilylacetylene.
Extended orthogonally fused conducting oligomers for molecular electronic devices
作者:James M. Tour、Ruilian Wu、Jeffry S. Schumm
DOI:10.1021/ja00018a069
日期:1991.8
Abstract : Described is an approach to orthogonallyfused conjugated organic compounds that may act as molecular switching devices. Four thiophene trimers are added in a single operation to spiro-fused cores to afford the target molecules. A spiro-fused thiophene-based monomer system is converted to a spiro- fused heptamer that is 25 A long. The synthesis of a mixed phenylene-thiophene system is described
摘要:描述了一种可用作分子开关器件的正交稠合共轭有机化合物的方法。在一次操作中将四个噻吩三聚体添加到螺旋融合核心以提供目标分子。一个基于螺环稠合噻吩的单体系统被转化为一个长度为 25 A 的螺环稠合七聚体。描述了混合亚苯基-噻吩系统的合成,该系统提供了 30 长的螺合八聚体。在每种情况下,噻吩上的烷基取代基都提供可溶性物质。三甲基甲硅烷基端基位于每个正交稠合系统的侧翼。有机钯和有机镍催化的过程广泛用于合成正交稠合化合物。