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.
Posttreatment Technique for S<sub>N</sub>2 Alkylation of Aromatics with Alkyl Halides: Aiming toward Large-Scale Synthesis of Building Blocks for Soft π-Molecular Materials
作者:Ken Okamoto、Fengniu Lu、Takashi Nakanishi
DOI:10.1246/bcsj.20180075
日期:2018.8.15
byproduct olefin contaminants in products of SN2 alkylation reactions of aromatic compounds can be efficiently removed by sequential posttreatments with a base and a boron compound (sodium borohydride or 9-borabicyclo[3.3.1]nonane), followed by column chromatography on silica gel. These treatments permit large-scale purification of various alkylated aromatics, thereby assisting in the development of soft
2,3,6,7-Tetraamino-9,9-bis(2-ethylhexyl)fluorene: New Multifunctional Monomer for Soluble Ladder-Conjugated Molecules and Polymers
作者:Xichuan Li、Yi Xiao、Xuhong Qian
DOI:10.1021/ol801081w
日期:2008.7.3
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.