Herewith, we report the enantioselective epoxidation of electron‐deficient cis‐ and trans‐α,β‐unsaturated amides with the environmentally benign oxidant H2O2. The catalysts ‐ manganese complexes with bis‐amino‐bis‐pyridine and struct...
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https://www.riss.kr/link?id=O106837256
2021년
eng
1615-4150
1615-4169
SCI;SCIE;SCOPUS
학술저널
Advanced synthesis & catalysis
2778-2782 [※수록면이 p5 이하이면, Review, Columns, Editor's Note, Abstract 등일 경우가 있습니다.]
0
상세조회0
다운로드다국어 초록 (Multilingual Abstract)
Herewith, we report the enantioselective epoxidation of electron‐deficient cis‐ and trans‐α,β‐unsaturated amides with the environmentally benign oxidant H2O2. The catalysts ‐ manganese complexes with bis‐amino‐bis‐pyridine and struct...
Herewith, we report the enantioselective epoxidation of electron‐deficient cis‐ and trans‐α,β‐unsaturated amides with the environmentally benign oxidant H2O2. The catalysts ‐ manganese complexes with bis‐amino‐bis‐pyridine and structurally related ligands ‐ exhibit reasonably high efficiency (up to 100 TON) and excellent chemo‐ and enantioselectivity (up to 100% and 99% ee, respectively). Crucially, the cis‐enamides epoxidation enantioselectivity and yield are dramatically enhanced by the presence of NH‐moiety, which effect can be explained by the hydrogen bonding interaction between the cis‐enamide substrate and the manganese based oxygen transferring species.
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