A simple catalyst of Ni(OAc)2 and P(t-Bu)3 enables selective C-alkylation of thioacetamides and primary acetamide with alcohols for the first time. Monoalkylation of thioamides, amides and t-butyl esters occurs in excellent yields (>95%). Mechanistic studies reveal that the reaction proceeds via a hydrogen autotransfer pathway.
Ni-Catalyzed α-Alkylation of Unactivated Amides and Esters with Alcohols by Hydrogen Auto-Transfer Strategy
作者:Siba P. Midya、Jagannath Rana、Jayaraman Pitchaimani、Avanashiappan Nandakumar、Vedichi Madhu、Ekambaram Balaraman
DOI:10.1002/cssc.201801443
日期:2018.11.23
A transition‐metal‐catalyzedborrowinghydrogen/hydrogen auto‐transfer strategy allows the utilization of feedstock alcohols as an alkylating partner, which avoids the formation of stoichiometric salt waste and enables a direct and benign approach for the construction of C‐N and C−C bonds. In this study, a nickel‐catalyzedα‐alkylation of unactivated amides and ester (tert‐butyl acetate) is carried
Mn-catalyzed C-alkylation of amides and tert-butyl acetate using alcohols as alkylating agents is reported. This approach exhibits a broad substrate scope providing the C(α)-alkylated amides in good yields via hydrogen auto-transfer strategy.
Ferric Sulphate/Potassium Bisulfate Promoted Facile Synthesis of
<i>N</i>
‐Sulfonylimidates from a Multi‐Component Reaction
作者:Jingjing Li、Yanwei Zhao、Jinwei Yang、Ruyi Li、Zhiyu Cao、Xiaobing Wan
DOI:10.1002/ejoc.202100752
日期:2021.11.8
Fe2(SO4)3/KHSO4 promoted facile synthesis of N-sulfonylimidates from amide, sulfonamide and ethyl diazoacetate was established. This synthesis features a wide range of substrates and displays good functional groups tolerance.
建立了 Fe 2 (SO 4 ) 3 /KHSO 4促进了从酰胺、磺酰胺和重氮乙酸乙酯轻松合成N-磺酰亚胺酸酯。这种合成具有广泛的底物,并显示出良好的官能团耐受性。
[EN] METHOD FOR PREPARING N-SULFIMIDE<br/>[FR] PROCÉDÉ DE PRÉPARATION DE N-SULFIMIDE<br/>[ZH] 一种制备 N - 磺酰亚胺的方法