1189350-76-2Relevant articles and documents
Visible-Light-Enabled Enantioconvergent Synthesis of α-Amino Acid Derivatives via Synergistic Br?nsted Acid/Photoredox Catalysis
Che, Chao,Li, Yi-Nan,Cheng, Xiang,Lu, Yi-Nan,Wang, Chun-Jiang
supporting information, p. 4698 - 4704 (2021/01/18)
An unprecedented radical cross-coupling reaction was achieved between glycine esters and racemic α-bromoketones catalyzed by synergistic Br?nsted acid/photoredox catalysis, thus serving as an efficient platform for the synthesis of highly valuable enantioenriched unnatural α-amino acid derivatives. This dual catalysis provides a powerful capability to control the reactive radical intermediate and iminium ion, thereby enabling enantioconvergent bond-formation in a highly stereochemical manner. An array of valuable enantioenriched unnatural α-amino acid derivatives bearing two contiguous stereogenic centers are readily accessible with high diastereoselectivity and excellent enantioselectivity, which include α-amino acids with a unique β-fluorinated quaternary stereocenter or its β-all-carbon counterpart. A strong chiral amplification effect was observed in this dual catalytic system.
Fe-Catalyzed enaminone synthesis from ketones and amines
Wu, Wenfeng,Wang, Zhuxian,Shen, Qun,Liu, Qiang,Chen, Huoji
, p. 6753 - 6756 (2019/07/22)
We have developed an iron-catalyzed direct olefination for enaminone synthesis, with saturated ketones as a source of olefins. This direct ketone β-functionalization reaction has readily available starting materials and a wide range of substrates and requires mild reaction conditions.
Domino Radical Addition/Oxidation Sequence with Photocatalysis: One-Pot Synthesis of Polysubstituted Furans from α-Chloro-Alkyl Ketones and Styrenes
Wang, Shuang,Jia, Wen-Liang,Wang, Lin,Liu, Qiang,Wu, Li-Zhu
supporting information, p. 13794 - 13798 (2016/09/21)
A new domino reaction has been developed that allows the combination of styrenes and α-alkyl ketone radicals to afford a wide array of polysubstituted furans in good to excellent yields under mild and simple reaction conditions. The key to success of this novel protocol is the use of photocatalyst fac-Ir(ppy)3and oxidant K2S2O8. Mechanistic studies by a radical scavenger and photoluminescence quenching suggest that a radical addition/oxidation pathway is operable.
