کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5222929 | 1383471 | 2009 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A relative approach for determining ring strain energies of heterobicyclic alkenes
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: A relative approach for determining ring strain energies of heterobicyclic alkenes A relative approach for determining ring strain energies of heterobicyclic alkenes](/preview/png/5222929.png)
چکیده انگلیسی
Ring strain energies (RSEs) of heterocyclic compounds are predicted compared to their analogous homocyclic compounds using the G3 method. Suitable reference compounds are devised for row 2 and row 3 heterobicyclic alkenes. Any difference in energy between the ring and the reference is due to RSE. Row 3 heterobicyclic alkene RSEs are less than those of row 2. As the electronegativity of the heteroatom increases, the RSE increases. Substitutents at the bridgehead carbons cause a decrease in RSE. [3.2.1] Heterobicyclic alkenes are significantly less strained than their [2.2.1] counterparts. Relative and absolute RSEs are reported for heterobicyclic alkenes and their derivatives.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Tetrahedron - Volume 65, Issue 23, 6 June 2009, Pages 4562-4568
Journal: Tetrahedron - Volume 65, Issue 23, 6 June 2009, Pages 4562-4568
نویسندگان
Jennifer Howell, John D. Goddard, William Tam,