کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5419292 | 1506997 | 2006 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effect of hetero atom on the conformational stability of the forming ring in the transition structures of Type-II ene cyclization: a theoretical study
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Effect of hetero atom on the conformational stability of the forming ring in the transition structures of Type-II ene cyclization: a theoretical study Effect of hetero atom on the conformational stability of the forming ring in the transition structures of Type-II ene cyclization: a theoretical study](/preview/png/5419292.png)
چکیده انگلیسی
The chair conformation of the forming ring in the transition structure, for its high stability, is usually considered for the determination of the overall stereoselectivity in a type-II ene cyclization reaction. However, present theoretical investigation reveals that the presence of a heteroatom like oxygen or nitrogen in the tether of type-II carbonyl ene cyclization stabilizes the transition structure, in which the forming ring adopts a boat conformation. Due to such stability of the boat conformer the overall stereoselectivity of some type-II reactions may differ from the expected one.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Molecular Structure: THEOCHEM - Volume 760, Issues 1â3, 28 February 2006, Pages 203-207
Journal: Journal of Molecular Structure: THEOCHEM - Volume 760, Issues 1â3, 28 February 2006, Pages 203-207
نویسندگان
Kuheli Chakrabarty, Sukhendu Roy, Gourab Kanti Das,