کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5276220 | 1385552 | 2012 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Remarkable ketene substituent dependent effect of photo irradiation on the diastereoselectivity in the Staudinger reaction
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
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چکیده انگلیسی
Controlling diastereoselectivity is a challenging issue in the Staudinger reaction. The influence of ultraviolet irradiation on the stereoselectivity in the Staudinger reaction has been investigated. The results indicate that ultraviolet irradiation is one of the most important means to regulate the diastereoselectivity of the products in the Staudinger reaction, whatever ketenes were generated from diazomethyl ketones or from substituted acetyl chlorides in the presence of triethylamine. However, the regulation is dependent on the ketene substituents obviously. Ultraviolet irradiation can even reverse the diastereoselectivity for the reactions involving ketenes without strong electron-donating substituents.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Tetrahedron Letters - Volume 53, Issue 7, 15 February 2012, Pages 786-789
Journal: Tetrahedron Letters - Volume 53, Issue 7, 15 February 2012, Pages 786-789
نویسندگان
Zhanhui Yang, Jiaxi Xu,