کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5277588 | 1385584 | 2008 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Synthesis and resolution of a new helically chiral azahelicene
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Synthesis and resolution of a new helically chiral azahelicene Synthesis and resolution of a new helically chiral azahelicene](/preview/png/5277588.png)
چکیده انگلیسی
Helically chiral azahexahelicene 3 was prepared in four steps using the Mizoroki-Heck coupling followed by classical oxidative photodehydrocyclisation. Resolution of this new chiral system was achieved through separation by HPLC providing (â)- and (+)-3 in high optical purity. The absolute configurations of (â)- and (+)-3 were assigned as M and P, respectively, by means of circular dichroism. Each of the hexacyclic systems (M)-(â)- and (P)-(+)-3 was reacted with boron tribromide to provide the corresponding helical pyridophenols in good yields.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Tetrahedron Letters - Volume 49, Issue 26, 23 June 2008, Pages 4092-4095
Journal: Tetrahedron Letters - Volume 49, Issue 26, 23 June 2008, Pages 4092-4095
نویسندگان
Faouzi Aloui, Riadh El Abed, Angéla Marinetti, Béchir Ben Hassine,