Synthesis of N-(4-Chlorobutanoyl)-1,2-Dihydro-(4H)-3,1-Benzoxazin-4-one Derivatives
محل انتشار: بیست و هفتمین کنفرانس شیمی آلی ایران
سال انتشار: 1398
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 160
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شناسه ملی سند علمی:
ISOC27_366
تاریخ نمایه سازی: 19 اسفند 1399
چکیده مقاله:
3,1-Benzoxazin-4-one and their derivatives1,2 are versatile intermediates in the synthesis of heterocycles with high pharmacological and biological activities.3,4 Here, we report a practical and convenient synthesis of N-(4-chlorobutanoyl)-1,2-dihydro-(4H)-3,1-benzoxazin-4-ones by cyclization reaction of Schiff-bases 3 (produced by condensation reaction of anthranilic acid derivatives 1 with benzaldehyde derivatives 2 at room temperature) with 4-chlorobutanoyl chloride at room temperature (Scheme 1). The presence of Cl in the end of butanoyl chain, makes the produced benzoxazine-4-ones 4 more reactive for further reactions against nucleophiles. The structures of all synthesized compounds were determined on the basis of their spectroscopic data.
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نویسندگان
Farzad Nikpour
Department of Chemistry, Faculty of Sciences, University of Kurdistan, Sanandaj, Iran
Jamal Azizi
Department of Chemistry, Faculty of Sciences, University of Kurdistan, Sanandaj, Iran