توجه: محتویات این صفحه به صورت خودکار پردازش شده و مقاله‌های نویسندگانی با تشابه اسمی، همگی در بخش یکسان نمایش داده می‌شوند.
۱A One–pot Synthesis of Imidazo[2,1–b]thiazole–3–carboxylate from Thiohydantoins and Ethyl bromopyruvate
نویسنده(ها): ،
اطلاعات انتشار: اولین همایش ملی تکنیک های نوین در تجهیزات و مواد آزمایشگاهی صنعت نفت ایران، سال
تعداد صفحات: ۴
Imidazo[2,1–b]thiazole–3–carboxylate was synthesized through a one–pot reaction of the thiohydantoins and ethyl bromopyruvate, this reaction occurs in the presence of acetic acid in boiling toluene refluxed for 6 hours led to imidazo[2,1–b]thiazole–3–carboxylates<\div>

۲An Efficient One–Pot Synthesis of Novel Heterocycles with Thiohydantoins and Isocyanides
نویسنده(ها): ،
اطلاعات انتشار: اولین همایش ملی تکنیک های نوین در تجهیزات و مواد آزمایشگاهی صنعت نفت ایران، سال
تعداد صفحات: ۴
The reaction of stoichiometric amounts of dialkyl acetylenedicarboxylates with alkyl isocyanides and 5,5–diaryl thiohydantoins in toluene and catalytic amount of p–TSA afforded imidazo[2,1–b][1,3]thiazines in good overall yields<\div>

۳A Facile and Rapid Route for the Synthesis of New Heterocyclic Compounds with Thiohydantoins
نویسنده(ها): ،
اطلاعات انتشار: سومین کنفرانس بین المللی نفت، گاز و پتروشیمی، سال
تعداد صفحات: ۴
Imidazo–fused heterocycles are used as anticancer agents. In this work, we describe the synthesis of the heterocyclic compound imidazothiazoles. The reaction of 5,5–diphenyl thiohydantoin derivatives with ethyl bromopyruvate at room temperature and in dichloromethane solvent to give the products 3a–e. The desired product under reflux in toluene solvent and in the presence of Para toluene sulfonic acid to give the compounds 4a–d. The structures of the new compounds were established by elemental analyses, IR, 1H NMR and 13C NMR data.<\div>

۴Analyzing the Effect of Hydrogen Shift on the Thiazine Derivatives
نویسنده(ها): ،
اطلاعات انتشار: سومین کنفرانس بین المللی نفت، گاز و پتروشیمی، سال
تعداد صفحات: ۵
The present paper describes studies on the synthesis of the thiazine, and structurally related derivatives. First, we report a simple method for the preparation of thiohydantoin derivatives that can easily be scaled up in the laboratory. After that, a two–step reaction is described to synthesis and further analyzing the influence of hydrogen shift on the thiazine derivatives. The second step include a triplex reaction which lead to synthesis imidazo[2,1–b][1,3]thiazines in the presence of para toluene sulfonic acid as the catalyst. Moreover, resulting in a much more selective method than the previously reported procedures is the advantage of this method.<\div>
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