کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
68945 48526 2006 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
An efficient synthesis of 4-substituted pyrazolyl-3,4-dihydropyrimidin-2(1H)-(thio)ones catalyzed by Mg(ClO4)2 under ultrasound irradiation
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی کاتالیزور
پیش نمایش صفحه اول مقاله
An efficient synthesis of 4-substituted pyrazolyl-3,4-dihydropyrimidin-2(1H)-(thio)ones catalyzed by Mg(ClO4)2 under ultrasound irradiation
چکیده انگلیسی

A simple method for the one-pot, three-component Biginelli condensation reaction of 5-chloro/phenoxyl-3-methyl-1-phenyl-4-formylpyrazole, a 1,3-dicarbonyl compound and urea or thiourea is described, employing Magnesium perchlorate [Mg(ClO4)2] as an efficient catalyst under ultrasound irradiation. A novel series of 4-substituted pyrazolyl-3,4-dihydropyrimidin-2(1H)-(thio)ones have been synthesized in moderate yields. The catalyst exhibited remarkable reactivity and can be recycled.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Molecular Catalysis A: Chemical - Volume 253, Issues 1–2, 1 July 2006, Pages 207–211
نویسندگان
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