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Reaction of 3-Bromobenzyl and 3-Bromoacetyl Coumarin with Phosphites. Synthesis of Some New Phosphonates and Phosphates in the Coumarin Series.
13C NMR spectra of 1‐(α‐aroyloxyarylideneamino)‐1,2,3‐triazoles. Identification of 4,5‐unsymmetrically substituted derivatives
- N. Rodios
- 1 July 1984
The 13C nmr spectra of the title compounds are reported. Chemical shifts of C-4 and C-5 carbons of the triazole ring are used for structural assignment of the 4,5-unsymmetrically substituted… Expand
Synthesis and a UV and IR spectral study of some 2‐aryl‐Δ‐2‐1,3,4‐oxadiazoline‐5‐thiones
Twenty four 2-Aryl-Δ-2-1,3,4-oxadiazoline-5-thione derivatives 2 were synthesized and their uv and ir spectra were studied. Correlation between σ-Hammett constants of aryl substituents and the… Expand
A comparative study of the interaction of salicylaldehydes with phosphonoacetates under Knoevenagel reaction conditions. Synthesis of 1,2-benzoxaphosphorines and their dimers
Abstract The reaction of salicylaldehydes 5 with phosphonoacetates 6 gives the coumarin-3-phosphonates 7 and the 1,2-benzoxaphosphorine-3-carboxylates 8 in yields and 7:8 ratios depending on the… Expand
Regio- and Stereoselective [2+2] Photodimerization of 3-Substituted 2-Alkoxy-2-oxo-2H-1,2-benzoxaphosphorines
- R. Nikolova, G. Vayssilov, N. Rodios, A. Bojilova
- Molecules : A Journal of Synthetic Chemistry and…
- 1 May 2002
Diethyl 1,2-benzoxaphosphorine-3-carboxylates 5 undergo a regio- and stereoselective [2+2] photodimerization reaction in methanol solution under the action of sunlight, giving in all cases the… Expand
Solution conformation of Monensin free acid, a typical representative of the polyetherin antibiotics
Abstract The solution conformation of the ionophore Monensin in its free-acid form bears a close resemblance to that of its Na + salt. The backbone is folded into a closed loop, and the pseudocyclic… Expand
Synthesis and a UV and IR Spectral Study of Some 2-Aryl-δ2-1,3,4- oxadiazoline-5-thiones.
Synthesis and spectroscopic characterization of 1‐[1,2,3‐triazol‐1‐yl]‐4‐aroylazetidin‐2‐ones
1-(N-Phenacylidene)amino-1,2,3-triazoles 3 react with propionylchloride and phenoxyacetylchloride in the presence of triethylamine to give trans- (5) and cis- (6)… Expand
A new and efficient method for conjugate addition of trialkylphosphites to 3-acylsubstituted coumarins
Abstract A new and efficient conjugate addition of trialkylphosphites to 3-ω-bromoacetylcoumarin 1 catalysed by p-toluenesulfonic acid (TsOH) has been studied. Under the same conditions, an… Expand
Solution conformation of septamycin and its sodium salt.
The interpretation of the 300 MHz 1H-nmr spectra of septamycin (1) and its sodium salt (1+) allow one to extract most of the parameters revealing their resemblant conformations in solution. The… Expand