نتایج جستجو برای: mannich base
تعداد نتایج: 258109 فیلتر نتایج به سال:
In this study, a new mannich base 1-(2H-1,3-benzodioxol-5-yl)-3-(morpholin-4-yl)propan-1-one (Mor) was successfully prepared in good yield. The structure of the title compound elucidated by 1H-NMR, FT-IR, UV-Vis and electron-impact mass spectroscopy. inhibitory activity Mor against SARS-CoV-2 main protease (Mpro) investigated means molecular docking approach. showed excellent binding affinity t...
The title compound, C23H30N2O4, a di-Mannich base derived from 4-meth-oxy-phenol and cis-1,2-di-amine-cyclo-hexane, has a perhydro-benzimidazolidine nucleus, in which the cyclo-hexane ring adopts a chair conformation and the heterocyclic ring has a half-chair conformation with a C-N-C-C torsion angles of -48.14 (15) and -14.57 (16)°. The mean plane of the heterocycle makes dihedral angles of 86...
Methacrolein (MAL) is an important intermediate extensively used in the manufacture of methyl methacrylate and other materials (polymers resins). In this study, a series secondary amines/acids were explored as catalysts for condensation formaldehyde propionaldehyde to prepare MAL. It was found that structure amines acids directly affected yield The effect catalyst closely related nucleophilicit...
Abstract The inhibition action of a Mannich base, N-(1- morpholinobenzyl) semicarbazide (MBS), was examined on AA6061 corrosion in 0.5 M HCl solution at varied temperatures (303 to 323 K). testing performed by potentiodynamic polarization (PDP) and electrochemical impedance spectroscopy (EIS) techniques. performance MBS improved with an increment its concentration (0.01–2.56 mM) temperature ris...
In the direct Mannich reaction and synthesis of α,β-unsaturated ketones, the use of organobismuth complexes as catalysts leads to high diastereoselectivity and products of single trans conformation. In this paper, we illustrate the relationship between structure and catalytic activity as well as diastereoselectivity of organobismuth complexes having a 5,6,7,12-tetrahydrodibenz [c,f][1,5]thiobis...
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