Studies on Pyrazolones. I. Light Absorption and Constitution of Certain 4-Halo-5-pyrazolones.
نویسندگان
چکیده
منابع مشابه
An easy direct arylation of 5-pyrazolones
A mild, efficient and catalytic ligand-free method for the direct arylation of 5-pyrazolones by Pd-catalyzed C-H bond activation is reported. The process smoothly proceeds and yields are moderate to excellent.
متن کاملHypersensitivity to pyrazolones.
To the allergologist, hypersensitivity to drugs means immunological drug reactions as classified in the Gell and Coombs system. To others, it may also include non-dose related adverse drug reactions including the non-immune mediated idiosyncratic drug reactions (type B). In the following discussion the broad definition of idiosyncrasy including all type B reactions and a clinical approach rathe...
متن کاملSynthesis and In-vitro Antifungal Evaluation of 5- Pyrazolones
Abstract: A series of 4-chloro-3-methyl-N-(substituted phenyl)-5-oxo-4,5-dihydro-1H-pyrazole-1carbothioamide were synthesized using earmark reaction of thiosemicarbazides and ethyl-2-chloroacetoacetate in DMF. All structures of the synthesized compounds were distinguished on the basis of IR, H-NMR, C-NMR and also elemental analysis. Synthesized Compounds were examined their potent antifungal ac...
متن کاملSpectroscopic, thermal and magnetic properties of some transition metal complexes derived from 1-Phenyl-3-Substituted-4-Nitroso-5-Pyrazolones
Complexes derived from some 1-Phenyl-3-methyl-4-nitroso-5-pyrazolone (L1), 1,3-diphenyl-4nitroso-5-pyrazolone (L2) and 1-phenyl-3-anilino4-nitroso-5-pyrazolone (L3) with Mn, Co, Ni, Cu and Zn metal ions have been prepared. Structural investigation of the ligands and their complexes has been made based on elemental analysis, infrared (FT-IR), ultraviolet and visible spectra (UV-Vis.), proton nuc...
متن کاملOne-pot multistep mechanochemical synthesis of fluorinated pyrazolones
Solventless mechanochemical synthesis represents a technique with improved sustainability metrics compared to solvent-based processes. Herein, we describe a methodical process to run one solventless reaction directly into another through multistep mechanochemistry, effectively amplifying the solvent savings. The approach has to consider the solid form of the materials and compatibility of any a...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Acta Chemica Scandinavica
سال: 1952
ISSN: 0904-213X
DOI: 10.3891/acta.chem.scand.06-1499