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Constrained C2 adsorbate orientation enables CO-to-acetate electroreduction.
Jin J, Wicks J, Min Q, Li J, Hu Y, Ma J, Wang Y, Jiang Z, Xu Y, Lu R, Si G, Papangelakis P, Shakouri M, Xiao Q, Ou P, Wang X, Chen Z, Zhang W, Yu K, Song J, Jiang X, Qiu P, Lou Y, Wu D, Mao Y, Ozden A, Wang C, Xia BY, Hu X, Dravid VP, Yiu YM, Sham TK, Wang Z, Sinton D, Mai L, Sargent EH, Pang Y. Jin J, et al. Nature. 2023 May;617(7962):724-729. doi: 10.1038/s41586-023-05918-8. Epub 2023 May 3. Nature. 2023. PMID: 37138081
Here we pursued dispersing a low concentration of Cu atoms in a host metal to favour the stabilization of ketenes(10)-chemical intermediates that are bound in monodentate fashion to the electrocatalyst. ...
Here we pursued dispersing a low concentration of Cu atoms in a host metal to favour the stabilization of ketenes(10)-chemical interm …
Silylium ion migration dominated hydroamidation of siloxy-alkynes.
Wang HD, Jiang L, Fan HJ. Wang HD, et al. Commun Chem. 2022 Oct 22;5(1):133. doi: 10.1038/s42004-022-00751-y. Commun Chem. 2022. PMID: 36697660 Free PMC article.
The SMH pathway goes through two steps, the first step is Ag+ promoted proton and silylium ion exchange between siloxy-alkynes and amide, leading to ketene and silyl-imines, the second step is Ag+ catalyzed nucleophilic addition between ketene and silyl-imines, foll …
The SMH pathway goes through two steps, the first step is Ag+ promoted proton and silylium ion exchange between siloxy-alkynes and amide, le …
Quantitative, Regiospecific, and Stereoselective Radical Ring-Opening Polymerization of Monosaccharide Cyclic Ketene Acetals.
Jiang NC, Zhou Z, Niu J. Jiang NC, et al. J Am Chem Soc. 2024 Feb 28;146(8):5056-5062. doi: 10.1021/jacs.3c14244. Epub 2024 Feb 12. J Am Chem Soc. 2024. PMID: 38345300
Cyclic ketene acetals (CKAs) are among the most well-studied monomers for radical ring-opening polymerization (rROP). ...
Cyclic ketene acetals (CKAs) are among the most well-studied monomers for radical ring-opening polymerization (rROP). ...
Photoredox Catalytic Phosphite-Mediated Deoxygenation of α-Diketones Enables Wolff Rearrangement and Staudinger Synthesis of β-Lactams.
Yang H, Li H, Wei G, Jiang Z. Yang H, et al. Angew Chem Int Ed Engl. 2021 Sep 1;60(36):19696-19700. doi: 10.1002/anie.202107080. Epub 2021 Jul 29. Angew Chem Int Ed Engl. 2021. PMID: 34142421
This mild and environmentally friendly strategy provides an unprecedented and efficient access to the Wolff rearrangement reaction which traditionally entails alpha-diazoketones as precursors. The resulting ketenes could be precisely trapped by alcohols/thiols to give alph …
This mild and environmentally friendly strategy provides an unprecedented and efficient access to the Wolff rearrangement reaction which tra …
Steering the reaction pathway of syngas-to-light olefins with coordination unsaturated sites of ZnGaOx spinel.
Li N, Zhu Y, Jiao F, Pan X, Jiang Q, Cai J, Li Y, Tong W, Xu C, Qu S, Bai B, Miao D, Liu Z, Bao X. Li N, et al. Nat Commun. 2022 May 18;13(1):2742. doi: 10.1038/s41467-022-30344-1. Nat Commun. 2022. PMID: 35585075 Free PMC article.
We demonstrate here that syngas conversion can be steered along a highly active and selective pathway towards light olefins via ketene-acetate (acetyl) intermediates by the surface with coordination unsaturated metal species, oxygen vacancies and zinc vacancies over ZnGaO( …
We demonstrate here that syngas conversion can be steered along a highly active and selective pathway towards light olefins via ketene …
Design, synthesis and biological evaluation of novel benzimidazole-2-substituted phenyl or pyridine propyl ketene derivatives as antitumour agents.
Wu LT, Jiang Z, Shen JJ, Yi H, Zhan YC, Sha MQ, Wang Z, Xue ST, Li ZR. Wu LT, et al. Eur J Med Chem. 2016 May 23;114:328-36. doi: 10.1016/j.ejmech.2016.03.029. Epub 2016 Mar 12. Eur J Med Chem. 2016. PMID: 27017265
A series of novel benzimidazole-2-subsituted phenyl or pyridine propyl ketene derivatives were designed and synthesized. The biological activities of these derivatives were then evaluated as potential antitumour agents. ...Therefore, this class of benzimidazole-2-subsitute …
A series of novel benzimidazole-2-subsituted phenyl or pyridine propyl ketene derivatives were designed and synthesized. The biologic …
Mechanism and Origin of Ligand-Controlled Chemo- and Regioselectivities in Palladium-Catalyzed Methoxycarbonylation of Alkynes.
Zhu L, Liu LJ, Jiang YY, Liu P, Fan X, Zhang Q, Zhao Y, Bi S. Zhu L, et al. J Org Chem. 2020 Jun 5;85(11):7136-7151. doi: 10.1021/acs.joc.0c00533. Epub 2020 May 21. J Org Chem. 2020. PMID: 32401024
On the other hand, a ligand-participated mechanism and an unrevealed mechanism involving ketene intermediates can promote methanolysis, whereas ligands with large bite angles or bulky substituents are detrimental to methanolysis. ...
On the other hand, a ligand-participated mechanism and an unrevealed mechanism involving ketene intermediates can promote methanolysi …
PIDA-Mediated Formal Olefinic C=C Bond Cleavage of alpha-Oxo-Ketene N,N-Acetals toward Substituted Oxazolines.
Guo T, Huang F, Jiang Q, Yu Z. Guo T, et al. Chemistry. 2018 Sep 25;24(54):14368-14372. doi: 10.1002/chem.201803466. Epub 2018 Aug 29. Chemistry. 2018. PMID: 30069948
The hypervalent iodine reagent PhI(OAc)(2) (PIDA) mediated the formal oxidative C=C bond cleavage and subsequent cyclization of internal olefins, that is, alpha-oxo-ketene N,N-acetals, which afforded substituted oxazolines. Isothiazoline derivatives were obtained from the …
The hypervalent iodine reagent PhI(OAc)(2) (PIDA) mediated the formal oxidative C=C bond cleavage and subsequent cyclization of internal ole …
Iridium-Catalyzed Enantioselective Allylic Substitution of Aliphatic Esters with Silyl Ketene Acetals as the Ester Enolates.
Jiang X, Hartwig JF. Jiang X, et al. Angew Chem Int Ed Engl. 2017 Jul 17;56(30):8887-8891. doi: 10.1002/anie.201704354. Epub 2017 Jun 27. Angew Chem Int Ed Engl. 2017. PMID: 28597600 Free PMC article.
Herein we report iridium-catalyzed enantioselective allylation reactions of silyl ketene acetals, the silicon enolates of esters, to form products containing a quaternary carbon atom at the nucleophile moiety and a tertiary carbon atom at the electrophile moiety. ...
Herein we report iridium-catalyzed enantioselective allylation reactions of silyl ketene acetals, the silicon enolates of esters, to …
Synthesis of hydroindoles via desymmetric [3+2] cycloadditions of para-quinamines with photogenerated ketenes.
Liu D , Shi B , Jiang H , Cheng Y , Xiao WJ , Lu LQ . Liu D , et al. Chem Commun (Camb). 2021 Sep 4;57(68):8496-8499. doi: 10.1039/d1cc03352b. Epub 2021 Aug 5. Chem Commun (Camb). 2021. PMID: 34351325
A DBU-catalyzed desymmetric [3+2] cycloaddition between para-quinamines and photogenerated ketenes was developed for the first time. Under the irradiation of low-energy blue LEDs, a variety of hydroindoles bearing all-carbon quaternary centers were produced with good react …
A DBU-catalyzed desymmetric [3+2] cycloaddition between para-quinamines and photogenerated ketenes was developed for the first time. …
15 results