Enhancing the Hydrolysis Phosphate Esters by Intramolecular Hydrogen Bonding
| المصدر: | المجلة العلمية لكلية التربية |
|---|---|
| الناشر: | جامعة مصراتة - كلية التربية |
| المؤلف الرئيسي: | Sasi, Mohamed Suliman (Author) |
| المجلد/العدد: | س3, ع6 |
| محكمة: | نعم |
| الدولة: |
ليبيا |
| التاريخ الميلادي: |
2016
|
| الشهر: | ديسمبر |
| الصفحات: | 43 - 51 |
| رقم MD: | 814690 |
| نوع المحتوى: | بحوث ومقالات |
| اللغة: | الإنجليزية |
| قواعد المعلومات: | EduSearch |
| مواضيع: | |
| كلمات المؤلف المفتاحية: |
The Hydrolysis of Phosphate | Intramolecular Hydrogen Bonding
|
| رابط المحتوى: |
عدد مرات التحميل
5
| المستخلص: |
The research project aim is to study the hydrolysis of 8- diethylphosphate-1-naphthalenoltriester, 1 with hydroxylamine in water. Compound 1 was successfully synthesized and its rate of reaction with hydroxylamine was monitored at 343 nm. Pseudo first order rate of P-O cleavage of 1 was measured to be 7.39× 10-3 M-1s-1 at 60 °C, which is 178 fold and 7 fold slower than diethyl 8-dimethylamino-1-naphthyl phosphatetriester, 3 at 60 °C 1.32 M-1s-1 and diethyl 8-amino-1-naphthyl phosphatetriester, 2 at 90 °C 5.5 × 10-2 M-1s-1 respectively. The rate of P-O cleavage of 1 with hydroxylamine was found to be faster than that of 4- nitrophenyl-1-cyclopropylphosphatetriester4 and 4-chlorophenyl-1- cyclopropylphosphate triester5, where the reaction was too slow to detect at 60 °C. |
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