Synthesis of a silane coupling agent containing a 4-(perfluoroalkyl)phenyl group and its application to the surface modification of glass
摘要:
Eight silane coupling agents, CF3(C6H4)C2H4Si(CH3)(OCH3)(2) (C6H4=p-phenylene) (1), C4F9(C6H4)C2H4Si(CH3)(OCH3)(2) (2), C6F13(C6H4)C2H4Si(CH3)(OCH3)(2) (3), C8F17(C6H4)C2H4Si(CH3)(OCH3)(2) (4), CF3(C6H4)C2H4Si(OCH3)(3) (5), C4F9(C4H4)C2H4Si-(OCH3)(3) (6), C6F13(C6H4)C2H4Si(OCH3)(3) (7) and C8F17(C6H4)C2H4Si(OCH3)(3) (8) have been prepared by the hydrosilylation reaction of dichloro(methyl)silane or trichlorosilane with the corresponding 4-perfluoroalkylstyrene in the presence of hydrogen hexachloroplatinate(IV), followed by reaction with sodium methoxide. These new coupling agents were freely soluble in hydrocarbon solvents. Their application for the surface modification of glass has been attempted. From measurements of the contact angles theta (degrees) of water and oleic acid on a modified glass plate surface, it was found that the silane coupling agents show a high degree of surface modification. The oxidation resistance of the modified glass surface has also been investigated.
Synthesis of a silane coupling agent containing a 4-(perfluoroalkyl)phenyl group and its application to the surface modification of glass
摘要:
Eight silane coupling agents, CF3(C6H4)C2H4Si(CH3)(OCH3)(2) (C6H4=p-phenylene) (1), C4F9(C6H4)C2H4Si(CH3)(OCH3)(2) (2), C6F13(C6H4)C2H4Si(CH3)(OCH3)(2) (3), C8F17(C6H4)C2H4Si(CH3)(OCH3)(2) (4), CF3(C6H4)C2H4Si(OCH3)(3) (5), C4F9(C4H4)C2H4Si-(OCH3)(3) (6), C6F13(C6H4)C2H4Si(OCH3)(3) (7) and C8F17(C6H4)C2H4Si(OCH3)(3) (8) have been prepared by the hydrosilylation reaction of dichloro(methyl)silane or trichlorosilane with the corresponding 4-perfluoroalkylstyrene in the presence of hydrogen hexachloroplatinate(IV), followed by reaction with sodium methoxide. These new coupling agents were freely soluble in hydrocarbon solvents. Their application for the surface modification of glass has been attempted. From measurements of the contact angles theta (degrees) of water and oleic acid on a modified glass plate surface, it was found that the silane coupling agents show a high degree of surface modification. The oxidation resistance of the modified glass surface has also been investigated.
Synthesis of a Polymerizable Fluorosurfactant for the Construction of Stable Nanostructured Proton-Conducting Membranes
作者:Mohan N. Wadekar、Wolter F. Jager、Ernst J. R. Sudhölter、Stephen J. Picken
DOI:10.1021/jo101196w
日期:2010.10.15
related fluorocarbon compounds is described. Compound 1 is synthesized using a copper-mediated cross-coupling reaction of 4-bromobenzaldehyde and sodium 5-iodooctafluoro-3-oxapentanesulfonate. The resulting benzaldehyde is converted to a styrene unit using a Wittigreaction with methyltriphenylphosphonium bromide in acetonitrile, using DBU as a base. This strategy for converting an iodo-functionalized
Copper‐Catalyzed Radical Enantioselective Carbo‐Esterification of Styrenes Enabled by a Perfluoroalkylated‐PyBox Ligand
作者:Zaicheng Nie、Mong‐Feng Chiou、Jinfeng Cui、Yanjie Qu、Xiaotao Zhu、Wujun Jian、Haigen Xiong、Yajun Li、Hongli Bao
DOI:10.1002/anie.202202077
日期:2022.7.11
The radicalenantioselective carbo-esterification of styrenesenabled by a newly developed perfluoroalkylated-PyBox ligand and copper catalysis is reported. Mechanistic studies reveal that this reaction is a rare example of an efficient ligand-decelerated system, in which the ligand decelerates the reaction, but the reaction is still efficient with reduced amounts of ligand.