Synthesis of 4′-hydroxymethylated pyrimidine ribo-C-nucleosides

A stereocontrolled synthesis of 4′-hydroxymethylated ribo-$\text{C}$-nucleosides and a new psico-$\text{C}$-nucleoside has been accomplished on the basis of the [3 + 4] reductive cyclocoupling reaction of α,α,α′,α′-tetrabromoacetone and furfuryl acetate.     

Lattice dynamics of tetracyanoethylene

Lattice dynamics calculations for both crystalline forms of tetracyanoethylene are presented. The comparison of the calculated static and dynamical properties with the experimental data, leads us to suggest an improved parameter set for the “6-exp” potential function for crystals with cyano groups.     

Photoinitiated substitution reactions of 2 and 4-pyridinecarbonitrile with cyclopentene

The photoreactions of 4 and 2-pyridinecarbonitrile with cyclopentene carried out in acetone or in acetonitrile solutions lead, respectively, to 4-(2 cyclopentenyl)-pyridine $\text{1}$ and 2-(2 cyclopentenyl)pyridine $\text{2}$. From 2-pyridinecarbonitrile a little amount of ketone $\text{3}$ is obtained.     

The mass spectra of 2- and 4-monohydroxy- and 2, 4-dihydroxy-1, X-naphthyridines

The mass spectra of 2-and 4-monohydroxy-and 2, 4-dihydroxy-1, 5-, -1, 6-, -1, 7-and 1, 8-naphthyridines are reported. Fragmentation mechanisms are proposed and discussed.     

Color reactions of pyridines with pentacyanoamminoferrate

Trisodium pentacyanoamminoferrate is proposed as a spot test, chromatographic spray or spectrophotometric reagent for pyridines. A 1:1 colored complex of the reagent and pyridine derivative is formed in aqueous solution. The intensity and stability of the color varies with the pH.