2,3,6,7-Tetraamino-9,9-bis(2-ethylhexyl)fluorene: New Multifunctional Monomer for Soluble Ladder-Conjugated Molecules and Polymers
摘要:
2,3,6,7-Tetraamino-9,9-bis(2-ethylhexyl)fluorene (TABEF), as a new multifunctional monomer for ladder-type conjugated molecules and polymers, was efficiently synthesized via a six-step procedure with an overall yield of 30%. Two isomeric ladder compounds based on TABEF building blocks were also synthesized and preliminarily studied.
Facile C−H Alkylation in Water: Enabling Defect-Free Materials for Optoelectronic Devices
作者:Gunin Saikia、Parameswar K. Iyer
DOI:10.1021/jo100028d
日期:2010.4.16
the alkylation of fluorene achieved via direct C−H alkylation under aqueous conditions is reported, wherein the formation of fluorenone is inhibited, resulting in the exclusive formation of the desired dialkyl-substituted fluorene monomer. As a proof of concept, this method has also been successfully extended to perform N-alkylation of carbazole, diphenylamine, and N,N-dialkylation of aniline in high
Preferential Oxidative Addition in Suzuki Cross-Coupling Reactions Across One Fluorene Unit
作者:Sven K. Weber、Frank Galbrecht、Ullrich Scherf
DOI:10.1021/ol061476b
日期:2006.8.1
The Suzuki-type cross-coupling reaction of 2,7-dihalofluorenes with 1 equiv of arylboronic acid and Pd-2(dba)(3)/P(t-Bu-3) as a catalyst system is investigated. The exclusive formation of the diarylated coupling product demonstrates that "preferential oxidative addition" is also applicable to fluorene monomers due to a controlled intramolecular motion of the regenerated Pd(0) catalyst across the "large" distance between the 2- and the 7-position of one fluorene monomer.