کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5225272 | 1383543 | 2007 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Regioselective monobromination of substituted phenols in the presence of β-cyclodextrin
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Regioselective monobromination of substituted phenols in the presence of β-cyclodextrin Regioselective monobromination of substituted phenols in the presence of β-cyclodextrin](/preview/png/5225272.png)
چکیده انگلیسی
Cyclodextrin acts as a restricting nanovessel to enhance regioselectivity in bromination of substituted phenols such as 3-nitrophenol, 2-chlorophenol, 3-chlorophenol, and 4-chlorophenol. In contrast to solution bromination, cyclodextrin facilitates regioselective monobromination and formation of polybrominated products are substantially reduced. Selectivities in brominations are also observed in water and in the solid state. The observed results are rationalized on the basis of specific modes of inclusion of substituted phenols inside the cyclodextrin cavity and find strong support from energy minimization studies and 1H-1H NOESY.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Tetrahedron - Volume 63, Issue 23, 4 June 2007, Pages 4959-4967
Journal: Tetrahedron - Volume 63, Issue 23, 4 June 2007, Pages 4959-4967
نویسندگان
Palaniswamy Suresh, Subramanian Annalakshmi, Kasi Pitchumani,