Building the buildingblocks: A highly enantioselective hydrogenation of β‐aryl‐β‐alkyl disubstituted nitroalkenes 1 has been developed. This method results in enantiomericallypure nitroalkanes 2, which are versatile precursors for chemical synthesis.
1,3-Difunctionalization of β-Alkyl Nitroalkenes via Combination of Lewis Base Catalysis and Radical Oxidation
作者:Ye Wang、Lei Zheng、Xiaodong Shi、Yunfeng Chen
DOI:10.1021/acs.orglett.0c04106
日期:2021.2.5
catalyst, β-alkyl-substituted nitroalkenes could be readily converted into allylicnitrocompounds. Examples of either C-1 or C-3 functionalization methods have been reported through nitro-elimination, giving alkene products. In this work, successful 1,3-difunctionalization was achieved through a synergetic Lewis base catalysis and TBHP radical oxidation, giving vinylic alkoxyamines in good to excellent
Enantioselective Synthesis of Chiral 2‐Nitroallylic Amines via Cooperative Cation‐Binding Catalysis
作者:Jin Hyun Park、Pintu Maity、Sushovan Paladhi、Han Yong Bae、Choong Eui Song
DOI:10.1002/chem.202301787
日期:2023.9.15
cooperative cation-binding catalysis as an efficient method for synthesizing chiral allylic amines. By utilizing a chiral oligoEG and potassium fluoride as a cation-binding catalyst and base, respectively, a wide range of biologically relevant chiral 2-nitroallylic amines are obtained with excellent enantioselectivities (up to >99 % ee) through the organocatalytic asymmetric aza-Henry-like reaction of β-monosubstituted
在这项研究中,我们提出使用协同阳离子结合催化作为合成手性烯丙胺的有效方法。通过使用手性寡聚乙二醇和氟化钾分别作为阳离子结合催化剂和碱,通过有机催化不对称氮杂亨利获得了各种具有优异对映选择性(高达 >99 % ee )的生物学相关手性 2-硝基烯丙基 胺β-单取代和β,β-二取代硝基烯烃与α-酰胺基砜作为亚胺前体的类反应。手性2-硝基烯丙基胺作为迈克尔受体的初步使用证明了其在生物活性化合物的多样性合成中的潜在应用。