737-47-3Relevant articles and documents
β-Amino Carbonyl Compounds from Iodine-Catalyzed Three Component Mannich Reactions and Evaluation of Their Antioxidant Activity
Ya?a, Hasniye,Hasdemir, Belma,Erken, ?zge
, p. 537 - 546 (2019/11/16)
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Tartaric acid-zinc nitrate as an efficient brnsted acid-assisted lewis acid catalyst for the mannich reaction
Dong, Hao Donga,Liu, Qing,Tian, Yuanyu,Qiao, Yingyun
, p. 463 - 466 (2018/10/15)
Tartaric acid-zinc nitrate has been found to be an efficient Brnsted acid-assisted Lewis acid catalytic system for the facile synthesis of β-amino carbonyl compounds through the one-pot Mannich reaction of aldehydes, aromatic amines and ketones in ethanol at room temperature. Remarkable enhancement of reactivity by tartaric acid (Br?nsted acid) was observed in these reactions in the presence of anhydrous zinc nitrate (Lewis acid), due to coordination of the tartaric acid ligand to zinc ions increasing the acidity of the system. This procedure shows some advantages such as mild reaction conditions, short reaction times and high yields.
H3PW12O40 supported on functionalized polyoxometalate organic-inorganic hybrid nanoparticles as efficient catalysts for three-component Mannich-type reactions in water
Khoshnavazi, Roushan,Bahrami, Leila,Havasi, Forugh,Naseri, Elham
, p. 11510 - 11521 (2017/02/26)
Two new types of catalyst were synthesized by the immobilization of H3PW12O40 (HPW12) on the surface of organic-inorganic polyoxometalate nanoparticles of H6Cu2[PPDA]6[SiW9Cu3O37]·12H2O (HybPOM) (PPDA = p-phenylenediamine) and Go/Fe3O4/HybPOM nanoparticles. These catalysts were characterized by thermogravimetric analysis (TGA), Fourier transform infrared (FT-IR) spectroscopy, scanning electron microscopy (SEM), energy dispersive X-ray analysis (EDX) and alternating gradient force magnetometry (AGFM). The IR spectroscopy as well as XRPD reveal that HPW12 were immobilized on the support. The potentiometric titration with n-butylamine reveal that the catalysts can be classified as strong acids. The results show that the particles are mostly spherical in shape and have an average size in the range of 20-50 nm. The catalytic activities of the catalysts were probed through one-pot three-component Mannich-type reactions of aldehydes, amines and ketones in water at room temperature. The catalysts were re-used at least five times without any loss of their high catalytic activity.