1620975-16-7Relevant academic research and scientific papers
Reactions of N,3-diarylpropiolamides with arenes under superelectrophilic activation: Synthesis of 4,4-diaryl-3,4-dihydroquinolin-2(1H)-ones and their derivatives
Gurskaya, Larisa Yu.,Belyanskaya, Diana S.,Ryabukhin, Dmitry S.,Nilov, Denis I.,Boyarskaya, Irina A.,Vasilyev, Aleksander V.
supporting information, p. 950 - 956 (2016/07/06)
The reaction of 3-aryl-N-(aryl)propiolamides with arenes in TfOH at room temperature for 0.5 h led to 4,4-diaryl-3,4-dihydroquinolin-2-(1H)-ones in yields of 44-98%. The obtained dihydroquinolinones were further transformed into the corresponding N-acyl or N-formyl derivatives. For the latter, the superelectrophilic activation of the N-formyl group by TfOH in the reaction with benzene resulted in the formation of N-(diphenylmethyl)-substituted dihydroquinolinones.
Lewis Acid Mediated Tandem Reaction of Propargylic Alcohols with Hydroxylamine Hydrochloride to Give α,β-Unsaturated Amides and Alkenyl Nitriles
Han, Ya-Ping,Song, Xian-Rong,Qiu, Yi-Feng,Hao, Xin-Hua,Wang, Jia,Wu, Xin-Xing,Liu, Xue-Yuan,Liang, Yong-Min
, p. 9200 - 9207 (2015/09/28)
We have developed a highly selective method for the synthesis of α,β-unsaturated amides and alkenyl nitriles from readily available propargylic alcohols. The reaction proceeded smoothly under the neutral conditions with hydroxylamine hydrochloride (NH2OH·HCl) as the nitrogen source. The development of these new strategies has significantly extended the application of hydroxylamine hydrochloride to the chemistry of propargylic alcohols. Moreover, both secondary and tertiary alcohols have been highly regioselectively transformed to the desired products with good functional group compatibility.
TMSCl-mediated synthesis of α,β-unsaturated amides via C-C bond cleavage and C-N bond formation of propargyl alcohols with trimethylsilyl azide
Song, Xian-Rong,Song, Bo,Qiu, Yi-Feng,Han, Ya-Ping,Qiu, Zi-Hang,Hao, Xin-Hua,Liu, Xue-Yuan,Liang, Yong-Min
, p. 7616 - 7625 (2014/09/16)
A new method with high efficiency for the synthesis of α,β- unsaturated amides from the easily prepared propargyl alcohols and TMSN 3 using TMSCl as an acid promoter is developed. A wide variety of α,β-unsaturated amides were produced in moderate to excellent yields. Mechanistic studies indicate that this transformation involves TMSCl-mediated allenylazide intermediate formation, C-C bond cleavage, and C-N bond formation. Significantly, this reaction shows good functional group compatibility and high regioselectivity, with a relatively short reaction time and inexpensive reagents.
