29708-07-4Relevant academic research and scientific papers
Nano-silica PAMAM dendrimer as a novel catalyst for Knoevenagel reactions
Hagiwara, Hisahiro,Sekifuji, Masayoshi,Tsubokawa, Norio,Hoshi, Takashi,Suzuki, Toshio
, p. 926 - 927,2 (2020/08/31)
A nano-silica dendrimer, poly(amidoamine)-grafted nanosilica (nano-PAMAM), catalyzed the Knoevenagel reaction of aryl and aliphatic aldehydes with various active methylene compounds at room temperature in good yields. The reaction conditions were mild eno
Unprecedented reaction between ethyl α-cyanocinnamate and o-phenylenediamine: Development of an efficient method for the transfer hydrogenation of electronically depleted olefins
Kumar, Satish,Kapoor, Kamal K.
, p. 2809 - 2814 (2008/02/13)
A reaction between ethyl α-cyanocinnamate and o-phenylenediamine under thermal conditions yielded 2-cyano-3-phenyl-propionic acid ethyl ester, 2-phenyl benzimidazole, and ethyl cyanoacetate. The mechanistic revelations led to the development of a simple and efficient transfer-hydrogenation process from the in situ generated benzimidazolines to activated olefins under solventless and catalyst-free conditions. Georg Thieme Verlag Stuttgart.
Polymeric sulfonate of piperazine as an inexpensive and recyclable catalyst for Knoevenagel condensation
Wen, Xinmin
, p. 762 - 765 (2007/10/03)
Polymeric sulfonate of piperazine (Amberlite 200 H/piperazine) has been found to be an inexpensive and reusable patalyst for Knoevenagel reaction between aldehydes and activated methylene compounds. The preparation and rejuvenation of the presented polyme
Use of a solid hydrotalcite structure incorporating fluorides for basic catalysis of michael or knoevenagel reactions
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Page/Page column 5, (2008/06/13)
The invention concerns the use of a solid basic catalyst comprising a hydrotalcite structure wherein part at least of the compensating anions are fluoride anions F? for producing Knoevenagel of Michael condensation reactions. The invention also concerns novel solid basic catalysts comprising a hydrotalcite structure characterised by a Mg/Al molar ratio ranging between 2.5 and 3.8 wherein at least part of the compensating anions are fluoride anions F?, and methods for preparing said novel catalysts.
A simple approach for the synthesis of 2,6-diaryl-4-oxo-3,4- dihydropyrimidine-5-carbonitriles
Mendonca Jr., Francisco J. B.,Dos Anjos, Janaina V.,Falcao, Emerson P. S.,De Melo, Sebastiao J.,Srivastava, Rajendra M.
, p. 479 - 484 (2007/10/03)
A concise, facile and straightforward synthesis of 2,6-diaryl-4-oxo-3,4- dihydropyrimidine-5-carbonitriles 12a-h is reported. The reaction for this preparation involves the condensation of ethyl α-cyanocinnamate and its para substituted analogs 8a-e with
A novel multicomponent reaction involving isocyanide, dimethyl acetylenedicarboxylate (DMAD), and electrophilic styrenes: Facile synthesis of highly substituted cyclopentadienes
Nair, Vijay,Menon, Rajeev S.,Beneesh,Sreekumar,Bindu
, p. 767 - 769 (2007/10/03)
Alkyl isocyanides, DMAD, and various activated styrenes furnish fully substituted cyclopentadienes in a one-pot three-component reaction.
Microwave-enhanced Knoevenagel reaction catalyzed by calcium oxide
Peng, Yanqing,Song, Gonghua
, p. 924 - 926 (2007/10/03)
Calcium oxide is employed both as heterogeneous catalyst and dehydrating agent in microwave-induced Knoevenagel reaction and gives the corresponding arylidene compounds in good yields.
Utilisation of 13C N.M.R. Spectroscopy for the Identification of E- and Z-α,β-Unsaturated Esters, Ketones and Nitriles.
Gregory, Barrie,Hinz, Werner,Jones, R. Alan,Arques, Jose Sepulveda
, p. 2801 - 2821 (2007/10/02)
Measurement of 3JCO,H coupling constants provides an unambiguous procedure for the configurational analysis of substituted 2- and 3-arylpropenoic esters and of E- and Z-2-arylbut-2-en-1,4-dioates, even when only one of the isomers is available for analysis.An analogous procedure can also be used for the configurational analysis of 3-arylpropenonitriles and of 4-arylbut-3-en-2-ones.
