کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1209596 | 1493759 | 2006 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Reassessment of the methyl derivatization reaction of carbamates with sodium hydride/dimethyl sulfoxide/methyl iodide for their determination by gas chromatography
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
A deep revision of the carbamate methyl derivatization reaction with sodium hydride/dimethyl sulfoxide/methyl iodide was carried out. Representative carbamates, R1–NH–COO–R2, mainly N-methyl and N-aryl ones, have been studied in order to clarify which carbamates undergo this reaction. Two possible reaction routes are proposed; the route depends on the carbamate substituent (–OR2 group) more than on the methyl or aryl groups joined to the NH moiety as literature indicates. The classification of carbamates in N-methyl and N-aryl is not suitable to predict the methylation pathway. A laboratory-made closed reactor allows handling the reagents involved, minimizing hazards and simplifying the procedure for rapid analysis.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Chromatography A - Volume 1132, Issues 1–2, 3 November 2006, Pages 241–247
Journal: Journal of Chromatography A - Volume 1132, Issues 1–2, 3 November 2006, Pages 241–247
نویسندگان
E. Crespo-Corral, M.J. Santos-Delgado, L. Mª Polo-Díez, J. Sanz-Perucha,