Experimental and Theoretical Studies on the Protection of aldehydes with diols and dithiols
محل انتشار: بیست و هفتمین کنفرانس شیمی آلی ایران
سال انتشار: 1398
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 192
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شناسه ملی سند علمی:
ISOC27_019
تاریخ نمایه سازی: 19 اسفند 1399
چکیده مقاله:
Protection of carbonyl compounds is an important at the multistep total synthesis of the enantiomerically pure natural and non-natural compounds. Acetals and thioacetals were well known as the protecting intermediates 1, 2. The nano magnetic Fe3O4@SiO2@(CH2)3NHSO3H catalyst was used for the protection process of aldehydes with diols and dithiols 3. To determine the most stable structure of the products were applied DFT-B3LYP/6-31G* method. The obtained theoretical results on the synthesized products have shown that the structure of the products of diols in compare with dithiols demonstrated different electronic properties. The diols and dithiols both have two conformers. There are interesting result, due to the hyperconjugation effect between C-H and aromatic ring in diols and also hyperconjugation between π-electrons of aromatic ring and 3d orbital space of S-atoms in dithiol derivatives. The different interesting aspects of this experimental and theoretical investigation will be presented and discussed 4.
کلیدواژه ها:
نویسندگان
Sepideh Khaef
Department of Organic Chemistry, Faculty of chemistry, Razi University, Kermanshah, Iran
Avat Arman Taherpour
Department of Organic Chemistry, Faculty of chemistry, Razi University, Kermanshah, Iran
Mohammad Ali Zolfigol
Department of Organic Chemistry, Faculty of chemistry, Bu Ali Sina University, Hamedan, Iran