1978-63-8

Upstream product

• 123-54-6 acetylacetone 
• 371-40-4 4-fluoroaniline 

Downstream Products

• 704874-83-9 N-[4-acetyl-1-(4-fluorophenyl)-5-methyl-2-oxo-3-trifluoromethyl-2,3-dihydro-1H-pyrrole-3-yl]-4-acetamidobenzenesulfonamide 
• 849596-38-9 [AlCl₂(O=C(Me)CH=C(Me)N(H)(p-C₆H₄F)4][AlCl₄] 

Relevant academic research and scientific papers

Crystal structure, experimental and DFT of (Z)-4-((4-fluorophenyl)amino)pent-3-en-2-one

Single crystals of a organic compound, (Z)-4-((4-fluorophenyl)amino)pent-3-en-2-one (4FPA) were grown by the slow evaporation technique and characterized by X-ray diffraction and FT-IR spectra. The normal mode frequencies, intensities and the correspondin

Ferric nitrate nonahydrate as a mild and efficient catalyst for the synthesis of ss-enaminones

Ferric nitrate nonahydrate (Fe(NO3)3 -9H 2O) has been found to be an extremely mild and efficient catalyst for the preparation of ss-enaminones from ss-dicarbonyl compounds and amines (aliphatic amines, aromatic amines and

β-Diketiminate aluminium complexes: Synthesis, characterization and ring-opening polymerization of cyclic esters

A series of aluminium alkyl complexes (BDI)AlEt2 (3a-m) bearing symmetrical or unsymmetrical β-diketiminate ligand (BDI) frameworks were obtained from the reaction of triethyl aluminium and the corresponding β-diketimine. The monomeric structure of the aluminium complex 3k was confirmed by an X-ray diffraction study, which shows that the aluminium center is coordinated by both of the nitrogen donors of the chelating diketiminate ligand and the two ethyl groups in a distorted tetrahedral geometry. Attempt to synthesize β-diketiminate aluminium alkoxide complexes by the reactions of monochloride complex "(BDI-2a)AlMeCl" (4) with alkali salts of 2-propanol gave unexpectedly an aluminoxane [(BDI-2a)AlMe]2(μ-O) (7) as characterized by X-ray diffraction methods. Complexes 3a-m and [(2,6-iPr2C6H3NCMe) 2HC]AlEt2 (8) were found to catalyze the ring-opening polymerization (ROP) of ε-caprolactone with moderate activities. The steric and electronic characteristics of the ancillary ligands have a significant influence on the polymerization performance of the corresponding aluminium complexes. The introduction of electron-donating substituents at the para-positions of the aryl rings in the ligand resulted in an apparent decrease in catalytic activity. Complex 3h showed the highest activity among the investigated aluminium complexes due to the high electrophilicity of the metal center induced by the meta-trifluoromethyl substituents on the aryl rings. The increase of steric hindrance of the ligand by introducing ortho-substituents onto the phenyl moieties also resulted in a decrease in the catalytic activity. Although the viscosity average molecular weights (Mη) of the obtained poly(caprolactone)s increased with the enhancement of monomer conversion, the ROPs of ε-caprolactone initiated by complexes 3a-m and 8 were not well-controlled, as judged from the broad molecular weight distributions (PDI = 1.66-3.74, Mw/Mn) of the obtained polymers and the nonlinear relationship of molecular weight versus monomer conversion. The Royal Society of Chemistry 2008.

NMR of enaminones part 3 ? - 1H, 13C and 17O NMR spectroscopic studies of acyclic and cyclic N-aryl enaminones: Substituent effects and intramolecular hydrogen bonding

17O, 13C and 1H NMR spectra for para-and meta-substituted 4-arylaminopent-3-en-2-ones (acyclic enaminones, 1 and 2) and 3-arylaminocyclohex-2-en-1-ones (cyclic enaminones, 3 and 4) are reported. The 17O, 13C and 1H shift values of these enaminones correlate well with σm0 and σp- constants in the correlations for meta and para derivatives, and with pKa values of the corresponding anilines. Dual substituent parameters analyses were also performed. Correlations of 17O and 13C chemical shifts of the carbonyl groups with those of the corresponding N-acylanilines indicate that the enaminone moiety as a whole has electronic properties similar to those of the RCONH group. The 17O shift values of the carbonyl O atoms of enaminones correlate well with their 1H and 13C data. Shieldings of 33-45 ppm for O atoms are observed for 1 and 2 compared with 3 and 4, respectively. This is attributed to intramolecular hydrogen bonding.