کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1411985 | 1501918 | 2006 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Kinetics and mechanism of the reaction between 2,3,4,5,6-pentafluorophenylacetonitrile and guanidine-like bases and the structure of the products
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The reactions between the 2,3,4,5,6-pentafluorophenylacetonitrile (PFPA) and such strong N-bases as 7-methyl-1,5,7-triazabicyclo[4.4.0]dec-5-ene (MTBD) and 1,5,7-triazabicyclo[4.4.0]dec-5-ene (TBD) have been studied by UV-vis kinetic, high-resolution LSIMS, 19F NMR and FT-IR methods. The products of these reactions (compounds 1 and 2 and oligomers) have been isolated and their structures have been studied using the methods mentioned. They have been identified as ortho or para substituted dimers and a mixture of trimers, tetramers and pentamers of PFPA. All the products are formed in a relatively slow processes described by various low equilibrium constants. The structures of the ortho or para substituted dimers have been visualized by PM5 semiempirical calculations.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Molecular Structure - Volume 794, Issues 1â3, 7 August 2006, Pages 230-236
Journal: Journal of Molecular Structure - Volume 794, Issues 1â3, 7 August 2006, Pages 230-236
نویسندگان
BÅażej Gierczyk, Grzegorz Schroeder, Piotr Przybylski, Bogumil Brzezinski,