کد مقاله کد نشریه سال انتشار مقاله انگلیسی ترجمه فارسی نسخه تمام متن
49774 46765 2016 4 صفحه PDF ندارد دانلود رایگان
عنوان انگلیسی مقاله
Chiral oligomers of spiro-salencobalt(III)X for catalytic asymmetric cycloaddition of epoxides with CO2
ترجمه فارسی عنوان
الیگومرهای کایرال از اسپیرو-salencobalt (III) X برای حلقه‌زایی نامتقارن کاتالیزوری از اپوکسیدها با CO2
کلمات کلیدی
حلقه‌زایی نامتقارن؛ کاتالیزور الیگومر کایرال ؛ دی اکسید کربن؛ اپوکسی؛ رزولوشن جنبشی
Asymmetric cycloaddition; Chiral oligomer catalyst; Carbon dioxide; Epoxide; Kinetic resolution
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی کاتالیزور
چکیده انگلیسی


• Several new chiral oligomers of spiro-salenCo(III)X catalysts were synthesized.
• The spiro backbones were first applied to produce chiral cyclic carbonates.
• These chiral catalysts could be easily recovered and reused.

Several new chiral oligomers of spiro-salenCo(III)X (spiro = 1.1′-spirobiindane-7.7′-diol) complexes have been designed, synthesized, and characterized by nuclear magnetic resonance (NMR), infrared (IR), and elemental analyses, in which, the chiral spiro moieties are first introduced into a scaffold of chiral salenCo catalysts. They were used to catalyze the asymmetric cycloaddition of epoxides with carbon dioxide. Under very mild reaction conditions, a kinetic resolution of racemic epoxides with CO2 was smoothly initiated by these chiral oligomer catalysts with good enantioselectivities, which can be attributed to the match effect between chiral backbones of salen and spiro. High stability and easy recyclability are their major advantages.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Catalysis Communications - Volume 81, 5 June 2016, Pages 50–53
نویسندگان
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