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العنوان
USES OF NOVEL2-CYANO-3-ARYL/)HETEROARLY) -2- PROPENOCYCLIC DERIVATIVES IN SYNTHESIS OF SOME HETEROCYCLIC SYSTEMS
المؤلف
ALI AHEMAD EL SAMAN,HANAA
هيئة الاعداد
مشرف / Sayed A. Shiba
مشرف / Nadia K. El-Aasar
مشرف / Ahmed K. El-Ziaty
الموضوع
Reaction of benzoxazinone (45) with nitrogen nucleophilic reagents.
تاريخ النشر
2009.
عدد الصفحات
250.P؛
اللغة
الإنجليزية
الدرجة
الدكتوراه
التخصص
Biochemistry
تاريخ الإجازة
1/1/2009
مكان الإجازة
جامعة عين شمس - كلية العلوم - Organic Chemistry
الفهرس
Only 14 pages are availabe for public view

from 480

from 480

Abstract

The present investigation deals the use of (E)-3-(benzo[d][1,3]dioxol-5-yl)-2-cyanoacryloyl chloride (3) in synthesis of some new acrylamids, acrylates, thioacrylates and heterocyclic systems with expected antibacterial activities. Also, to study the effect of the 2-cyano group on the reactivity and stability of C2-C3 double bond towards different strong and weak nucleophiles.
Condensation of piperonal with ethyl cyanoacetate in the presence of piperidine, afforded (E)-ethyl 3-(benzo[d]-[1,3] dioxol-5-yl)-2-cyanoacrylate (1). Hydrolysis of 1 in alcoholic sodium hydroxide solution gave the corresponding acid 2, which upon refluxing with thionyl chloride yielded the new acid chloride 3 in good yield (Scheme 1).