کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5219549 | 1383360 | 2012 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Copper-catalyzed boration of activated alkynes. Chiral boranes via a one-pot copper-catalyzed boration and reduction protocol
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Copper-catalyzed boration of activated alkynes. Chiral boranes via a one-pot copper-catalyzed boration and reduction protocol Copper-catalyzed boration of activated alkynes. Chiral boranes via a one-pot copper-catalyzed boration and reduction protocol](/preview/png/5219549.png)
چکیده انگلیسی
Phosphine-copper(I) complexes efficiently catalyzed the mono-boration of electron-deficient alkynes in the presence of MeOH and also catalyzed conjugate reductions of alkenylboronates bearing an electron-withdrawing group. The mono-addition of bis(pinacolato)diboron to alkynes catalyzed by a copper-Xantphos complex produced vinylboronates with high regio and stereoselectivity and asymmetric reduction of the vinylboronates by a chiral copper-bisphosphine catalyst allowed the synthesis of valuable chiral boranes with high enantioselectivity. One-pot boration/asymmetric reduction of α,β-unsaturated alkynoates could be conducted with a single copper-phosphine catalyst.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Tetrahedron - Volume 68, Issue 17, 29 April 2012, Pages 3444-3449
Journal: Tetrahedron - Volume 68, Issue 17, 29 April 2012, Pages 3444-3449
نویسندگان
Ho-Young Jung, Xinhui Feng, Hyohyun Kim, Jaesook Yun,