14533-87-0Relevant articles and documents
Bismuth(III) chloride as a New Catalyst for Knoevenagel Condensation in the Absence of Solvent
Prajapati, Dipak,Sandhu, Jagir S.
, p. 1945 - 1946 (1992)
The Knoevenagel condensation of various aldehydes was carried out under heterogeneous catalysts conditions using bismuth(III) chloride in absence of solvent.The method gives high yields of Knoevenagel products.
Potassium triiodide. A new and efficient catalyst for carbon-carbon bond formation in aqueous media
Thakur, Ashim J.,Prajapati, Dipak,Gogoi, Baikuntha J.,Sandhu, Jagir S.
, p. 258 - 259 (2003)
Potassium triiodide catalyses the condensation of carbonyl compounds with active methylene compounds in aqueous media to afford E olefinic products in high yields.
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 (2009)
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
Magnetic core-shell dendritic mesoporous silica nanospheres anchored with diamine as an efficient and recyclable base catalyst
Surabhi,Shabir, Javaid,Gupta, Padmini,Sah, Digvijay,Mozumdar, Subho
, p. 21152 - 21166 (2020/12/31)
In the present study, diamine-functionalized magnetic core-shell dendritic mesoporous silica nanospheres have been successfully synthesized by an oil-water biphasic stratification-coating strategy. The shape, size and morphology of the synthesized magnetic nanocatalyst could be characterized by various physicochemical techniques such as, field emission scanning electron microscopy (FE-SEM) and transmission electron microscopy (TEM). The characteristic information about the successful immobilization of various functionalities on the nanospheres could be obtained with the help of X-ray powder diffraction (XRD) patterns, Fourier transform-infrared spectroscopy (FT-IR), energy dispersive X-ray spectroscopy (EDX) and thermo-gravimetric analysis (TGA). The details about the magnetic behaviour and surface area of the nanocatalyst could be acquired by vibrating sample magnetometry (VSM) and BET surface analysis, respectively. The synthesized diamine-functionalized magnetic nanoparticles were then explored as a highly efficient catalyst for the Knoevenagel condensation and one-pot synthesis of polyhydroquinolines using aromatic/heteroaromatic aldehydes and aliphatic aldehydes with active methylene compounds under very mild conditions. The synthesized magnetic core-shell dendritic mesoporous silica nanospheres had large surface areas. This large surface area and pore volume could facilitate a proper interaction and penetration of the reactant molecules with the basic amine groups present on the dendritic mesoporous silica nanospheres. The supported nanocatalyst revealed no sign of leaching of the amine groups present inside the dendrimers and therefore, could be reused up to nine times without any noteworthy loss in catalytic activity.
One-pot multifunctional catalysis with NNN-Pincer Zr-MOF: Zr base catalyzed condensation with Rh-catalyzed hydrogenation
Rasero-Almansa, Antonia M.,Corma, Avelino,Iglesias, Marta,Sánchez, Félix
, p. 3092 - 3100 (2013/10/21)
We describe the postsynthetic modification of Zr-based metal organic frameworks (MOFs) containing chiral NNN-pincer ligands based on aminopyridineimines, as well as the subsequent formation of (NNN)-M-Zr-MOF complexes (M=Rh, Ir). With these new multifunct
Condensation of ethyl cyanoacetate with aromatic aldehydes in water, catalyzed by morpholine
Gomes, Marcelo N.,De Oliveira, Cecilia M. A.,Garrote, Clevia F. D.,De Oliveira, Valeria,Menegatti, Ricardo
experimental part, p. 52 - 57 (2011/03/19)
Synthesis of (E)-ethyl 2-cyano-3-phenylacrilate derivatives in water catalyzed by morpholine was investigated. The reactions were performed under green chemistry conditions. Copyright
