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العنوان
Synthetic potentialities and chemical reactions of some new silicon reagents /
المؤلف
El­Behery, Akram Hamdy Mohamed.
هيئة الاعداد
باحث / اكرم حمدي محمد البحيري
مشرف / فتحي عبدالقادر عامر
مشرف / سعد السيد المرسي
مشرف / سامي بيومي سعيد
مناقش / عبدالعزيز إبراهيم سيد
الموضوع
Silicon Reagents. primary thioamides. Sodium azide. Chemical Reactions.
تاريخ النشر
2004.
عدد الصفحات
230 p. :
اللغة
الإنجليزية
الدرجة
الدكتوراه
التخصص
العلوم البيئية (متفرقات)
تاريخ الإجازة
1/1/2004
مكان الإجازة
جامعة المنصورة - كلية العلوم - الكمياء
الفهرس
Only 14 pages are availabe for public view

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Abstract

Introduction: Surveying the different application of tetrachlorosilane and its derivatives in the preparation of organic compounds. Results and discussion: Part 1: Tetrachlorosilane­Sodium Azide Reagent Combination (Triazidochlorosilane­in situ): Several tetrazole derivatives have received increased attention due to wide medicinal applications. The reaction of primary thioamides with triazidochlorosilane (generated in situ from TCS and NaN3) in refluxed acetonitrile produces the corresponding 5­substituted­1H­tetrazoles in excellent yields. Part 2: Tetrachlorosilane and Urea­Hydrogen Peroxide Reagent: We reported herein, as a preliminary investigation, the oxychlorination of <U+F061>,<U+F062>­unsaturated carbonyl compounds using a novel reagent system derived from tetrachlorosilane and urea­hydrogen peroxide adduct in excellent yields. Part 3: Tetrachlorosilane­Isoamylnitrite Reagent Combination: In this part, we examined the ga­soximation of arylmethyl ketones. Treatment of acetophenone derivatives 50a­e with a mixture of tetrachlorosilane and isoamyl nitrite at ­20<U+00BA>C in CH2Cl2 afforded the ga­soximino derivative 51a­e in excellent yields. Part 4: Tetrachlorosilane (TCS) with dry ethanol combination was found to be a useful reagent for the synthesis of a variety of organic compounds of diverse complexity. In the present work the behavior of benzaldehyde derivatives with the 1,2­diphenyl ethanone (deoxybenzoin) derivatives has been studied in the presence of our reagent TCS/EtOH.