39165-01-0Relevant academic research and scientific papers
Rapid assembly of α-ketoamides through a decarboxylative strategy of isocyanates with α-oxocarboxylic acids under mild conditions
Huang, Junjie,Liang, Baihui,Chen, Xiuwen,Liu, Yifu,Li, Yawen,Liang, Jingwen,Zhu, Weidong,Tang, Xiaodong,Li, Yibiao,Zhu, Zhongzhi
supporting information, p. 4783 - 4787 (2021/06/11)
A simple and practical method for α-ketoamide synthesis via a decarboxylative strategy of isocyanates with α-oxocarboxylic acids is described. The reaction proceeds at room temperature under mild conditions without an oxidant or an additive, showing good substrate scope and functional compatibility. Moreover, the applicability of this method was further demonstrated by the synthesis of various bioactive molecules and different application examples through a two-step one-pot operation.
Synthetic method of alpha-keto amide compound
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Paragraph 0117-0122, (2020/09/23)
The invention discloses a synthesis method of an alpha-keto amide compound, which comprises the following steps: mixing a benzoyl azide compound as shown in a chemical formula I with a benzoyl formicacid compound as shown in a chemical formula II, and reacting to obtain an alpha-keto amide compound as shown in a chemical formula III; in the formula, R1 is a monosubstituted or polysubstituted group on a benzene ring; R2 is a group that is not H; the synthesis method can be used for efficiently synthesizing the functionalized alpha-ketoamide compound, has the advantages of simple synthesis steps, safety in operation, good compatibility of the synthesis method to functional groups and high atom economy, and is easy for industrial synthesis.
Catalyst- and Additive-Free Chemoselective Transfer Hydrogenation of α-Keto Amides to α-Hydroxy Amides by Sodium Formate
Hao, Feiyue,Gu, Zhenyu,Liu, Guyue,Yao, Wubing,Jiang, Huajiang,Wu, Jiashou
, p. 5985 - 5991 (2019/09/10)
A catalyst- and additive-free chemoselective transfer hydrogenation of α-keto amides to α-hydroxy amides is easily achieved by using sodium formate as a hydrogen source. The utility of this method is demonstrated by gram-scale synthesis and transformation of the resultant α-hydroxy amides into polysubstituted acetamides and 2-arylindole derivatives. Control experiments suggest that the NH group of α-keto amides is crucial for the chemoselective reduction through the formation of hydrogen bonds.
Catalyst-free three-component synthesis of highly functionalized 2,3-dihydropyrroles
Wang, Dong,Li, Linna,Feng, Hairong,Sun, Hua,Almeida-Veloso, Fabrice,Charavin, Marine,Yu, Peng,Désaubry, Laurent
, p. 2775 - 2780 (2018/06/27)
An efficient synthesis of fully substituted 2,3-dihydropyrroles has been achieved in one step through the three-component reaction of amines, aromatic aldehydes and α-ketoamides. This atom-economical and catalyst-free reaction is highly stereoselective and generates underexplored heterocycles in a single step. These compounds were examined in an enzymatic assay that led to the identification of potent α-glucosidase inhibitors, thereby demonstrating the utility of this novel methodology in medicinal chemistry.
Friedel-Crafts Hydroxyalkylation of Indoles with α-Keto Amides using Reusable K3PO4/ nBu4NBr Catalytic System in Water
Muthukumar, Alagesan,Sekar, Govindasamy
, p. 8827 - 8839 (2018/08/03)
A mild and operationally simple Friedel-Crafts hydroxyalkylation of indoles with α-keto amides was developed for the first time by using catalytic amount of K3PO4 and nBu4NBr in water as solvent through a solid-liquid inte
A Mild and Chemoselective Hydrosilylation of α-Keto Amides by Using a Cs2CO3/PMHS/2-MeTHF System
Kumar, Govindharaj,Muthukumar, Alagesan,Sekar, Govindasamy
, p. 4883 - 4890 (2017/09/13)
A Cs2CO3-catalyzed hydrosilylation reaction of α-keto amides that proceeds through the in situ formation of MeSiH3 has been developed by using inexpensive polymethylhydrosiloxane in 2-methyltetrahydrofuran (2-MeTHF) as the solvent. A wide range of aryl and alkyl α-keto amides, prepared from anilines and alkylamines, were subjected to the hydrosilylation conditions to afford α-hydroxy amides in moderate to excellent yields. This transition-metal-free protocol was applied to a chemoselective hydrosilylation, in which reduction occurred at the carbonyl of the α-keto amide functionality over that of the simple ketone, and further extended to a gram-scale protocol.
Novel synthesis of tetrahydro-1H-pyrrolo[1,2-a]imidazol-2-ones via decarboxylative cyclization reaction of α-amino acids and α-ketoamides
Wu, Jia-shou,Jiang, Hua-jiang,Yang, Jian-guo,Jin, Zheng-neng,Chen, Ding-ben
supporting information, p. 546 - 551 (2017/01/16)
An efficient and practical method was developed for the synthesis of tetrahydro-1H-pyrrolo[1,2-a]imidazol-2-ones based on the decarboxylative cyclization reaction of α-ketoamides and proline. In most cases, tetrahydro-1H-pyrrolo[1,2-a]imidazol-2-ones were obtained with perfect diastereoselectivity to give trans-isomer in excellent yield.
Iodine-mediated oxidation of ynamides: A facile access to N-monosubstituted α-ketoamides and α-ketoimides
Huang, Hai,He, Guangke,Zhu, Xiaolin,Jin, Xiaodong,Qiu, Shineng,Zhu, Hongjun
, p. 7174 - 7183 (2015/01/16)
An efficient iodine-mediated oxidation reaction for ynamides has been developed to produce N-monosubstituted α-ketoamides and α-ketoimides. This oxidative method, which exhibits good functional group tolerance, was performed under mild conditions without a metal catalyst.
A palladium(II)-catalyzed synthesis of α-ketoamides via chemoselective aroyl addition to cyanamides
Guin, Srimanta,Rout, Saroj Kumar,Gogoi, Anupal,Ali, Wajid,Patel, Bhisma K.
, p. 2559 - 2565 (2014/09/29)
An acyl moiety generated from α-oxocarboxylic acids via decarboxylation undergoes a palladium-catalyzed chemoselective insertion into organic cyanamides to afford N-monosubstituted α-ketoamides.
A straightforward synthesis of N-monosubstituted α-keto amides via aerobic benzylic oxidation of amides
Shao, Jun,Huang, Xiaomei,Wang, Siyuan,Liu, Bingxin,Xu, Bin
, p. 573 - 579 (2012/01/13)
An efficient sodium bicarbonate promoted aerobic oxidation reaction to prepare N-monosubstituted α-keto amides in the presence of n-tetrabutylammonium hydrogensulfate (TBAHS) was described. This reaction provides a very simple and convenient synthetic route to N-monosubstituted α-keto amides from easily available aryl- or heteroarylacetamides in good to high yields without using toxic reagents and harsh conditions.
