Metal-Free Synthesis of Aryl Esters from Carboxylic Acids and Diaryliodonium Salts
作者:Tue B. Petersen、Rehan Khan、Berit Olofsson
DOI:10.1021/ol2012082
日期:2011.7.1
An efficient arylation of carboxylicacids with diaryliodonium salts has been developed, giving arylesters in high yields within short reaction times for both aromatic and aliphatic substrates. The transition-metal-free conditions are compatible with a range of functional groups, and good chemoselectivity is observed with unsymmetric diaryliodonium salts. Furthermore, steric hindrance in the ortho
The novel anthracene decorated dendrimeric cyclophosphazenes for highly selective sensing of 2,4,6-trinitrotoluene (TNT)
作者:Emrah Özcan、Süreyya Oğuz Tümay、Gürkan Keşan、Serkan Yeşilot、Bünyemin Çoşut
DOI:10.1016/j.saa.2019.05.020
日期:2019.9
Novel fluorescent anthracene-decorated cyclotri- and cyclotetraphosphazenes (5 and 6) are designed and synthesized, and their chemosensor behaviors against nitroaromatic compounds are examined by UV/Vis and fluorescence spectroscopies for addressing the sensors with cyclophosphazenes for 2,4,6-trinitrotoluene detection. The fluorescence intensities of (5 and 6) are found to be selectively quenched by only 2,4,6-trinitrotoluene through the non-covalent pi center dot center dot center dot pi stacking interactions between anthracene-substituted cyclophosphazenes and 2,4,6-trinitrotoluene. In addition, cyclic voltammetry and theoretical calculation of novel sensor systems are studied. The proposed fluorescent sensor systems are critical in terms of practical detection of 2,4,6-trinitrotoluene. (C) 2019 Elsevier B.V. All rights reserved.
LOW DIELECTRIC CONSTANT SILICEOUS FILM MANUFACTURING COMPOSITION AND METHODS FOR PRODUCING CURED FILM AND ELECTRONIC DEVICE USING THE SAME
申请人:Merck Patent GmbH
公开号:EP4010441A1
公开(公告)日:2022-06-15
[EN] LOW DIELECTRIC CONSTANT SILICEOUS FILM MANUFACTURING COMPOSITION AND METHODS FOR PRODUCING CURED FILM AND ELECTRONIC DEVICE USING THE SAME<br/>[FR] COMPOSITION DE FABRICATION DE FILM SILICEUX À FAIBLE CONSTANTE DIÉLECTRIQUE ET PROCÉDÉS DE PRODUCTION DE FILM DURCI ET DISPOSITIF ÉLECTRONIQUE L'UTILISANT
申请人:MERCK PATENT GMBH
公开号:WO2021028297A1
公开(公告)日:2021-02-18
To provide a low dielectric constant siliceous film manufacturing composition capable of forming a low dielectric constant siliceous film with dispersed pores having excellent mechanical properties and stable electrical properties. [Means] The present invention provides a low dielectric constant siliceous film manufacturing composition comprising: a polysiloxane, a pore-generating material, a condensation catalyst generator, and a solvent.
Metal-Free Arylation of Oxygen Nucleophiles with Diaryliodonium Salts
作者:Nazli Jalalian、Tue B. Petersen、Berit Olofsson
DOI:10.1002/chem.201201645
日期:2012.10.29
carbonyl groups, heteroatoms, and alkenes. Unsymmetric salts can be chemoselectively utilized to obtain products with hitherto unreported levels of steric congestion. The arylation has been extended to sulfonic acids, which can be converted to sulfonateesters by two different approaches. With recent advances in efficient synthetic procedures for diaryliodonium salts the reagents are now inexpensive and