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