64620-59-3Relevant articles and documents
A novel enamination of β-dicarbonyl compounds catalyzed by Bi(TFA)3 immobilized on molten TBAB
Khodaei, Mohammad M.,Khosropour, Ahmad R.,Kookhazadeh, Mehdi
, p. 209 - 212 (2005)
Enamination of a wide variety of primary amines was successfully carried out in the presence of catalytic amounts of bismuth(III) trifluoroacetate immobilized on molten tetrabutylammonium bromide as "green" media under mild conditions. This new system of the catalyst is recyclable and reusable. Generally, the results of the reaction in tetrabutylammonium bromide is better than the previously obtained results in water because of their yields and reaction times.
P2O5/SiO2 as a new, efficient, and reusable catalyst for preparation of β-enaminones under solvent-free conditions
Mohammadizadeh, Mohammad R.,Hasaninejad,Bahramzadeh,Khanjarlou, Z. Sardari
experimental part, p. 1152 - 1165 (2009/10/09)
P2O5/SiO2 (30% w/w) was applied as an efficient, heterogeneous, and reusable catalyst for the synthesis of β-enaminones. The reactions were rapidly completed at 80°C under solvent-free conditions and products were obtained in good to excellent yields. Copyright Taylor & Francis Group, LLC.
Enamination of β-dicarbonyl compounds with amines
Khodaei,Khosropour,Cardel
scheme or table, p. 217 - 221 (2009/04/06)
Enamination of a wide variety of primary amines was successfully described with excellent chemoselectivity in the presence of catalytic amounts of β-cyclodextrin in water under mild conditions. Aliphatic amines also reacted efficiently to produce the corresponding enaminones.
ZrCl4-catalyzed efficient synthesis of enaminones and enamino esters under solvent-free conditions
Lin, Jin,Zhang, Li-Feng
, p. 77 - 81 (2007/10/03)
A facile synthesis of β-enaminones and enamino esters by condensation of β-dicarbonyl compounds with differently substituted amines in the presence of ZrCl4 under solvent-free conditions is reported.
An efficient method for the enamination of 1,3-dicarbonyl compounds with ceric ammonium nitrate (CAN)
Mo, Li-Ping,Liu, Shu-Fen,Li, Wan-Zhi
, p. 879 - 884 (2008/02/11)
An efficient method for the enamination of 1,3-dicarbonyl compounds by employing ceric ammonium nitrate (CAN) as the catalyst has been described. A variety of β-amino-α,β-unsaturated ketones and esters have been synthesized in excellent yield within a short reaction time under solvent-free conditions.
Enamination of 1,3-dicarbonyl compounds catalyzed by tin tetrachloride
Zhang, Zhan-Hui,Ma, Zi-Chuan,Mo, Li-Ping
, p. 535 - 539 (2008/09/18)
Tin tetrachloride has been found to be an extremely efficient catalyst for the enamination of 1,3-dicarbonyl compounds under solvent-free conditions at room temperature.
Phosphotungstic acid catalysed synthesis of β-enamino compounds under solvent-free conditions
Li, Geng-Chen
, p. 696 - 698 (2008/09/20)
A convenient eco-friendly procedure has been developed for the synthesis of β-enaminones and β-enamino esters by reacting 1,3-dicarbonyl compounds with amines in the presence of catalytic amounts of phosphotungstic acid (H3PW12O40,1 mol%). The reaction proceeds smoothly at room temperature under solvent-free conditions and gives the corresponding β-enamino compounds in high to excellent yields.
A general and efficient method for the preparation of β-enamino ketones and esters catalyzed by indium tribromide
Zhang, Zhan-Hui,Yin, Liang,Wang, Yong-Mei
, p. 184 - 190 (2007/10/03)
A variety of β-enamino ketones and esters have been synthesized in high to exellent yields by reacting β-dicarbonyl compounds with amines in the presence of a catalytic amount of indium tribromide. The reaction proceeds smoothly at room temperature in a short reaction time under solvent-free conditions.
Cerium(III) chloride heptahydrate (CeCl3·7H2O) as an efficient enamination catalyst in aqueous media
Khodaei,Khosropour,Kookhazadeh
, p. 1445 - 1448 (2007/10/03)
Cerium(III) chloride heptahydrate CeCl3·H2O catalyzes enamination of β-dicarbonyl compounds with primary amines in aqueous medium at room temperature to afford the corresponding β-enamino ketones with high chemoselectivity.
Enamination of β-dicarbonyl compounds catalyzed by CeCl 3·7H2O at ambient conditions: Ionic liquid and solvent-free media
Khodaei, Mohammad Mehdi,Khosropour, Ahmad Reza,Kookhazadeh, Mehdi
, p. 1980 - 1984 (2007/10/03)
Enamination of a wide various primary amines was successfully carried out in the presence of catalytic amounts of cerium chloride heptahydrate in ionic liquid and solvent-free conditions as 'green' media under mild reaction conditions.
