کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1335334 1500263 2014 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Conversion of 2-thiohydantoins and their derivatives to the corresponding hydantoins in the processes of complexation reactions with copper(II) chloride dihydrate
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی معدنی
پیش نمایش صفحه اول مقاله
Conversion of 2-thiohydantoins and their derivatives to the corresponding hydantoins in the processes of complexation reactions with copper(II) chloride dihydrate
چکیده انگلیسی

The treatment of 5-pyridylmethylene-substituted 2-thiohydantoins or 2-alkylthio-3,5-dihydro-4Н-imidazole-4-ones with CuCl2.2H2O affords the mononuclear or polymeric copper(II) complexes of the corresponding hydantoins. A presumable mechanism of hydantoin moiety formation involves Lewis acid catalyzed nucleophilic substitution of a sulfur-containing leaving group in the organic ligand by a water molecule from CuCl2.2H2O. The copper complexes Cu(L1-H)Cl(H2O) (7; L1 = (Z)-3-allyl-5-(pyridine-2-ylmethylene)imidazole-2,4(4H)-dione) and Cu(L2-H)2 (9; L2 = Z)-3-allyl-5-(5′-bromo-pyridine-2-ylmethylene)imidazole-2,4(4H)-dione) were characterized by X-ray diffraction.

The treatment of 5-pyridylmethylene-substituted 2-thiohydantoins or 2-alkylthio-3,5-dihydro-4Н-imidazole-4-ones with CuCl2.2H2O affords the mononuclear or polymeric copper(II) complexes of the corresponding hydantoin anions. A presumable mechanism of hydantoin moiety formation involves Lewis acid catalyzed nucleophilic substitution of a sulfur-containing leaving group by a water molecule from CuCl2.2H2O.Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Polyhedron - Volume 76, 7 July 2014, Pages 45–50
نویسندگان
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