Oxidation of β-Ketoamides: The Synthesis of Vicinal Tricarbonyl Amides
作者:Yueyang Liu、Zhiguo Zhang、Yameng Wan、Guisheng Zhang、Zhonglian Li、Jingjing Bi、Nana Ma、Tongxin Liu、Qingfeng Liu
DOI:10.1021/acs.joc.6b03062
日期:2017.4.7
A facile and direct oxidative reaction for the synthesis of vicinaltricarbonyl amides in moderate to excellent yields (53–88%) was developed starting from readily available β-ketoamides in the presence of phenyliodine(III) bis(trifluoroacetate). The resulting products possess significant synthetic potential, making this approach a valuable addition to the group of traditional methods already available
Silver(I)-Catalyzed Tandem Approach to β-Oxo Amides
作者:Jaya Kishore Vandavasi、Cheng-Tien Hsiao、Wan-Ping Hu、Siva Senthil Kumar Boominathan、Jeh-Jeng Wang
DOI:10.1002/ejoc.201500224
日期:2015.5
A facile and efficient AgI-catalytic approach is reported for the first time to synthesize β-oxoamides from β-oxo esters a with broad substrate scope in good to excellent yields. Crossover and in situ NMR studies confirmed that the reaction occurred through a new pathway and not by the traditional condensation reaction. The key advantages of this method are the readily available starting materials
Highly selective synthesis of functionalized polyhydroisoquinoline derivatives via a three-component domino reaction
作者:Xian Feng、Jian-Jun Wang、Zhan Xun、Juan-Juan Zhang、Zhi-Bin Huang、Da-Qing Shi
DOI:10.1039/c4cc08900f
日期:——
have been synthesized via the three-component domino reaction of glutaraldehyde and malononitrile with a series of beta-ketoamides under microwave irradiation conditions in the presence of a catalytic amount of Et3N (10 mol%). This reaction represents the first reported process for the facile conversion of a beta-ketoamide to a hydroisoquinoline via a C-N bond cleavage reaction without the need for
Regioselective synthesis of functionalized [1,8]naphthyridine derivatives via three-component domino reaction under catalyst-free conditions
作者:Xian Feng、Jian-Jun Wang、Juan-Juan Zhang、Cheng-Pao Cao、Zhi-Bin Huang、Da-Qing Shi
DOI:10.1039/c4gc01469c
日期:——
and efficient one-potsynthesis of functionalized [1,8]naphthyridine derivatives via a three-component domino reaction of glutaraldehyde, malononitrile, and β-ketoamides, undercatalyst-freeconditions in an environmentally friendly medium (ethanol) is described. The main advantages of this protocol are short reaction times, practical simplicity, high yields, catalyst-freeconditions, cheap and benign
Multicomponent Strategy to Pyrazolo[3,4-<i>b</i>]pyrrolo[3,4-<i>d</i>]pyridine Derivatives under Microwave Irradiation
作者:Xian Feng、Jianjun Wang、Dexiu Liu、Hui Shi、Wenjing Lu、Daqing Shi
DOI:10.1021/acs.joc.2c03070
日期:2023.6.2
novel three-component reaction has been established that allows a flexible and practical approach to pyrazolo[3,4-b]pyrrolo[3,4-d]pyridine derivatives from phenylglyoxal, β-ketoamide, and 5-aminopyrazole with acetic acid as the solvent. Various dihydropyrazolo[3,4-b]pyrrolo[3,4-d]pyridin-6(3H)-one were isolated in moderate to good yields with broad functional group tolerance.
已经建立了一种新的三组分反应,该反应允许灵活实用的方法从苯乙二醛、β-酮酰胺和 5-氨基吡唑与乙酸作为吡唑并[3,4- b ]吡咯并[3,4- d ]吡啶衍生物溶剂。各种二氢吡唑并[3,4- b ]吡咯并[3,4- d ]pyridin-6(3 H )-one 以中等到良好的产率分离,具有广泛的官能团耐受性。