15953-73-8Relevant articles and documents
Solid-state and solution structures of a series of [(HBPz3Me2)Rh(CO)(PR3)] and [(HBPz3Me2,4Cl)Rh(CO)(PR3)] complexes
Malbosc, Fran?ois,Chauby, Valérie,Serra-Le Berre, Carole,Etienne, Michel,Daran, Jean-Claude,Kalck, Philippe
, p. 2689 - 2697 (2001)
Addition of 1 equiv. of a phosphane or phosphite ligand to the κ3-bonded [TpMe2Rh(CO)2] and [TpMe2,4ClRh(CO)2] dicarbonyl precursors gives the monosubstituted complexes [TpRh(CO)L]. The X-ray crystal
Cu1.5PMo12O40-catalyzed condensation cyclization for the synthesis of substituted pyrazoles
Yang, Guo-Ping,He, Xing,Yu, Bing,Hu, Chang-Wen
, (2018/09/12)
A convenient and direct approach has been developed for the preparation of pyrazole derivatives by the condensation cyclization of hydrazines/hydrazide and 1,3-diketones in the presence of Cu1.5PMo12O40 (0.33?mol%) under mild conditions (r.t.-60?°C, 10–30?min). Notably, the reaction was found to be scalable as 99% yield was obtained when the reaction was performed at a 5-mmol scale. This solvent-free and halogen-free catalytic system represents an effective economic and environmentally friendly method for the construction of pyrazoles.
Synthesis and characterization of some symmetrical substituted 1-(2-chloroethyl)pyrazole-based chalcogenides
Pundir,Mehta,Mobin,Bhasin
, p. 99 - 105 (2019/01/16)
The present paper describes the synthesis of some symmetrical substituted 1-(2-chloroethyl) pyrazole-based dichalcogenides and monochalcogenides by reacting different 3,4,5-trisubstituted 1-(2-chloroethyl) pyrazole derivatives with in situ prepared Na2E2 (E = S, Se, Te) and sodium hydrogen selenide, respectively. All compounds were fully characterized by different spectroscopic techniques, namely, IR, 1H, 13C, 77Se nuclear magnetic resonance, and mass spectrometry. X-ray crystal structure determination of 1,2-bis(2-(4-bromo-3,5-dimethyl-1H-pyrazol-1-yl)ethyl)diselane (10b) reveals intermolecular Se·N·H interactions between two molecules.