کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1257678 | 971576 | 2011 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The first catalytic asymmetric addition of diethylzinc to aldehyde promoted by chiral thiourea
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: The first catalytic asymmetric addition of diethylzinc to aldehyde promoted by chiral thiourea The first catalytic asymmetric addition of diethylzinc to aldehyde promoted by chiral thiourea](/preview/png/1257678.png)
چکیده انگلیسی
A series of C2-symmetric and asymmetric chiral thiourea derivatives were synthesized from commercial l-phenylalanine. All of the new compounds have been fully characterized by IR, 1H NMR, 13C NMR, MS spectra and elemental analyses. The chiral thioureas were used as chiral ligands in the catalytic enantioselective ethylation of aldehydes with diethylzinc, the corresponding sec-alcohols were gained with excellent enantioselectivities (up to 87.1% ee) and high yields (up to 76.7%) after the conditions were optimized.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chinese Chemical Letters - Volume 22, Issue 11, November 2011, Pages 1265–1268
Journal: Chinese Chemical Letters - Volume 22, Issue 11, November 2011, Pages 1265–1268
نویسندگان
Zhi Guo Qiao, Tian Hua Shen, Zhen Fang Fu, Jun Qi Li, Hong Wang, Qing Bao Song,