A Nickel‐Bisdiamine Porous Organic Polymer as Heterogeneous Chiral Catalyst for Asymmetric Michael Addition to Aliphatic Nitroalkenes
作者:Mikkel B. Buendia、Søren Kegnæs、Søren Kramer
DOI:10.1002/adsc.202000875
日期:2020.12.8
chiral nickel(II)‐bisdiamine complex, which is accessible on gram‐scale. This metal complex functions as a heterogeneous catalyst for the enantioselective Michael addition between malonates and aliphatic nitroalkenes, and it provides yields and enantioselectivities on par with homogeneous catalysts. Good functional group tolerance is reported for this reaction. Upon recycling, the catalyst achieves significantly
Tertiary Amine-Derived Ionic Liquid-Supported Squaramide as a Recyclable Organocatalyst for Noncovalent “On Water” Catalysis
作者:Rinat S. Tukhvatshin、Alexander S. Kucherenko、Yulia V. Nelyubina、Sergei G. Zlotin
DOI:10.1021/acscatal.7b00562
日期:2017.4.7
was synthesized from available precursors and applied as an efficient organocatalyst for asymmetricMichael additions of β-dicarbonyl compounds to α-nitroolefins in the presence of water. Corresponding Michael adducts were generated under proposed conditions in nearly quantitative yield with high enantioselectivity (up to 99% ee). Useful precursors to pharmaceutically important chiral β-amino acids and
Multisiteorganic–inorganichybridcatalysts have been prepared and applied in a new general, practical, and sustainable synthetic procedure toward industrially relevant GABA derivatives. The domino sequence is composed of seven chemical transformations which are performed in two one‐pot reactions. The method produces both enantiomeric forms of the product in high enantiopurity as well as the racemate
비대칭 마이클 촉매 반응을 통한 (S)-프레가발린 전구체의 제조방법 및 이를 이용한 (S)-프레가발린의 제조 방법
申请人:Research & Business Foundation SUNGKYUNKWAN UNIVERSITY 성균관대학교산학협력단(220050013604) BRN ▼101-82-12009
公开号:KR101548885B1
公开(公告)日:2015-09-01
본 발명에 따른 키랄성 (S)-프레가발린 전구체의 제조 방법은 이작용성 키랄 촉매의 존재 하에, 베타-이소부틸 나이트로 알킨과 말로네이트를 비대칭 마이클 반응시키는 단계를 포함한다. 이에 따라 사용하기에 안전한 촉매를 이용하여 저렴하고, 인체에 유해하지 않으며 환경오염을 유발하지 않는 조건에서 높은 광학 선택성과 반응성으로 키랄성 (S)-프레가발린 전구체를 합성할 수 있다.