Phase Transfer Catalysis with Quaternary Ammonium Type Gemini Surfactants: O-Alkylation of Isovanillin
作者:Mesut Boz、Sedat Semih Baştürk
DOI:10.1007/s11743-016-1821-z
日期:2016.7
alkylation of isovanillin with alkyl halide was successively carried out in the presence of potassium carbonate and a phasetransfercatalyst in tetrahydrofuran. The same reactions were also performed with both the traditional phasetransfercatalyst tetrabutylammonium bromide and without any catalyst. The results were compared with those of dimeric surfactants. Consequently, it was expressed that alkandiyl‐α
Aggregation and Thermodynamic Properties of Some Cationic Gemini Surfactants
作者:Halide Akbaş、Aylin Elemenli、Mesut Boz
DOI:10.1007/s11743-011-1270-7
日期:2012.1
In this study, the geminisurfactants of the alkanediyl‐α‐ω‐bis(alkyl dimethyl ammonium) dibromide type, on the one hand, with different alkyl groups containing m carbon atoms and an ethanediyl spacer, referred to as “m‐2‐m” (m = 10, 12 and 16) and, on the other hand, with n‐C16 alkyl groups and different spacers containing s carbon atoms, referred to as “16‐s‐16” (s = 2, 6, 10 and Ar (8)) have been
New dimeric, trimeric and tetrameric quaternary ammonium salts were accomplished by reaction of tertiary alkyldimethyl amines with appropriate bromomethylbenzene derivatives. A series of new cationic surfactants contain different alkyl chain lengths (C4-C18), aromatic spacers and different numbers of quaternary nitrogen atoms. The structure of the products was confirmed by spectral analysis (FT-IR