کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1407567 1501690 2017 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Tautomerism of 2-(pyridine-2-yl)-1,3-diazaspiro[4.4]non-1-en-4-one
ترجمه فارسی عنوان
Tautomerism از 2-(pyridine-2-yl)-1,3-diazaspiro[4.4]non-1-en-4-one
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آلی
چکیده انگلیسی


• Spirocyclic imidazolinone is in solution as a mixture of tautomers.
• The ratio of the tautomers is solvent- and phase-dependent.
• The interconversion between the tautomers is slow on the NMR time scale.

The work deals with both solution state (using 1H, 13C and 15N NMR) and solid state (using X-ray) structure of 2-(pyridine-2-yl)-1,3-diazaspiro[4.4]non-1-en-4-one. The compound exists in the solution predominantly as 5-oxo tautomer where the amount of 4-oxo form depends on the solvent used. Mutual interconversion between the tautomers is slow on the NMR time scale and is studied by means of both EXSY and variable temperature NMR. In the solid state, the compound is solely as 5-oxo tautomer.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Molecular Structure - Volume 1127, 5 January 2017, Pages 568–574
نویسندگان
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