Massenspektren von sekundären Vinylcarbinolen

The mass spectra of secondary vinylcarbinols of the structure R? CH(OH)? CH?CH₂ show the same fragments as those of the isomeric ethylketones R? CO? C₂H₅. This is the result of a rearrangement of the molecular ions of the vinylcarbinols to molecular ions of the ethylketones before fragmentation occurs. Compounds of the two classes differ only slightly from one another in the intensity values.     

Organische Phosphorverbindungen XXV Darstellung und Eigenschaften von sekundären und tertiären Phosphinsulfiden

Two new processes for the preparation of sec. phosphine sulfides which involve reaction of dialkylamino-dialkyl or diaryl phosphines with hydrogen sulfide, and of dialkylthionophosphonates, (RO)₂P(S)H, with GRIGNARD or organolithium reagents, respectively, are described. The addition of sec. phosphine sulfides to olefins and the condensation of sec. phosphine sulfides with N-hydroxymethyldialkylamines are reported. The conversion of tert. Phosphine sulfides to the corresponding tert. phosphine oxides is readily achieved with hydrogen peroxyde. The physical properties of several new unsymmetrical tert. phosphine sulfide and oxides are listed.     

Reaktionen von 5-diazourazilen mit primären aminen zu 1,2,3-triazolcarbonsäurederivaten

The reaction of 5-diazouracils with saturated primary amines affords [(1-alkyl-1,2,3-triazol-4-yl) carbonyl]ureas. The primary formation of a non-isolable 6-amine-adduct 2 is followed by 1,6-ring opening of the pyrimidone and ring closure to the triazole derivative.