3506-53-4Relevant academic research and scientific papers
Scalable synthesis of enaminones utilizing Gold's reagents
Schuppe, Alexander W.,Cabrera, James M.,McGeoch, Catherine L.B.,Newhouse, Timothy R.
, p. 3643 - 3651 (2017/06/13)
Several Gold's reagents were synthesized from cyanuric chloride and N,N-dialkylformamides. These synthetic equivalents of N,N-dimethylformamide dimethyl acetal were used in an optimized and scalable procedure for the regioselective synthesis of a variety
Synthesis of enaminones containing diverse N,N-disubstitution via simple transamination: a study with sustainable catalyst-free operation
Gao, Yong,Liu, Yunyun,Wei, Li,Wan, Jieping
, p. 5547 - 5555 (2017/09/23)
Abstract: A systematic investigation on the synthesis of β-enaminones containing diverse N,N-disubstitution via the transamination of N,N-dimethyl amino functionalized β-enaminones and secondary amines has been conducted by employing biomass available green solvent ethyl lactate as reaction medium. A class of β-enaminones containing different N,N-disubstitutions have been smoothly synthesized under the sustainable conditions without using any catalyst.
Gold-catalyzed heterogeneous aerobic dehydrogenative amination of α,β-unsaturated aldehydes to enaminals
Jin, Xiongjie,Yamaguchi, Kazuya,Mizuno, Noritaka
supporting information, p. 455 - 458 (2014/01/23)
Although enaminals (β-enaminals) are very important compounds and have been utilized as useful synthons for various important compounds, they have been synthesized through non-green and/or limited procedures until now. Herein, we have successfully develop
Synthesis of substituted benzenes from α-methylene ketones
Khaidem, Ibomacha Singh,Singh, Sagolsem Lokhol,Singh, Laishram Ramananda,Khan, Mohd Ziaur Rahman
, p. 911 - 914 (2007/10/03)
A new general method for the synthesis of substituted benzenes from cyclic ketones having active methylene groups via the corresponding hydroxymethylene ketones and enamino-ketones has been developed. Formylation of these ketones with ethyl formate followed by enamination with pyrrolidine produces enamino-ketones which on reaction with threefold excess of malononitrile in boiling benzene in the presence of ammonium acetate in acetic acid gives the substituted benzenes in good yield. The reaction has been extended to aliphatic and aromatic ketones having active methylene groups to give substituted benzenes and biphenyls, respectively.
Reactivities of 3-(1-Azolyl)-2-alken-1-ones and the Related Compounds With Pyrrolidine
Kashima, Choji,Tajima, Tadakuni,Higuchi, Chihiro,Omote, Yoshimori
, p. 345 - 348 (2007/10/02)
From the rate constants of the reaction with pyrrolidine, the reactivities of 3-(1-azolyl)-2-alken-1-ones with nucleophiles were evaluated to be rather high.Especially the reactivities of the quarternary salts of 3-(1-imidazolyl)-2-alken-1-ones were nearly equal to those of 3-chloro-2-alken-1-ones.In conclusion, 3-(1-imidazolyl)-2-alken-1-ones satisfied the practical requirements for the starting materials of the synthesis of 3-hetero-substituted 2-alken-1-ones.
Muscle relaxants. 3rd communication: Development of acrylic acid derivatives of potential muscle relaxing activity
Kreutzberger,Kreutzberger
, p. 232 - 234 (2007/10/02)
With reference to the occurrence of C=C partial structures and alkyl carboxylate groupings in muscle relaxants, the synthesis of acrylic acid derivatives by the aminomethinylation procedure has been followed up. From the reaction of s-triazine (1) with methyl acetoacetate (2a) and piperidine (5a), methyl 2-acetyl-3-piperidino acrylate (6a) arises. Analogously, 3-pyrrolidinoacrylophenone (6b) and 3-morpholinoacrylophenone (6c) are formed. In the same manner, the 3-component reaction comprising the interaction of 1 with malononitrile (7) and a secondary amine (5) gives rise to the formation of the aminomethylenemalononitrile structure 8.
