Facile synthesis, spectroscopic characterization and X-ray analysis of 4-alkoxylated 2-Hydroxybenzophenone (cas 117-99-7)s

Add time:08/29/2019    Source:sciencedirect.com

Two 2-hydroxy-4-alkoxy-3′-nitrobenzophenones were synthesized in a facile way. Their structures were characterized with the aid of mass spectra and 1H NMR spectra analysis, as well as X-ray diffraction analysis. The 1H NMR spectra showed an intramolecular hydrogen bond formation in their structures. Compound 1 crystallizes in the monoclinic P2 (1) space group with the crystal cell parameters a = 3.9318(4) Å, b = 7.1042(9) Å, c = 22.0400(19) Å, α = 90.00°, β = 92.3140(10)°, γ = 90.00°, V = 615.13(11) Å3 and Z = 2. Compound 2 crystallizes in the monoclinic space group P2 (1)/n with the crystal cell parameters a = 3.9765(5) Å, b = 11.8286(15) Å, c = 28.867(3) Å, α = 90.00°, β = 92.8710(10)°, γ = 90.00°, V = 1356.1(3) Å3 and Z = 4. Results showed that the benzophenone skeletons are non-planar, with a large torsion to minimize their repulsive force. The substituted nitro or alkoxy groups are essentially coplanar with respect to the benzene rings to which it connected, whereas the carbonyl group in benzophenone skeleton is coplanar with the benzene ring which is substituted by alkoxy group. Classic and non-classic intra- and intermolecular hydrogen bonds, together with the π–π stacking interactions stabilize their molecular conformations. The minor variations in the alkoxy group substituent cause great difference in their intermolecular hydrogen bond formation and stacking mode.

We also recommend Trading Suppliers and Manufacturers of 2-Hydroxybenzophenone (cas 117-99-7). Pls Click Website Link as below: cas 117-99-7 suppliers

Prev:Reactions of 2-Hydroxybenzophenone (cas 117-99-7)s with Corey–Chaykovsky reagent
Next:2-Hydroxybenzophenone (cas 117-99-7) UV-absorber containing 4,4,5,5-tetramethylimidazolidine fragment)