Ethyl-, vinyl- and ethynylcyanoborates: Room temperature borate ionic liquids with saturated and unsaturated hydrocarbon chains

Ethyl-, vinyl- and ethynyltricyano and dicyanofluoroborates were prepared on gram scale from commercially available potassium trifluoroborates and trimethylsilylcyanide. Salt metathesis resulted in the corresponding EMIm-salts that are hydrophobic room-temperature ionic...

Alkylresorcinols in rye (Secale cereale L.) grains. V. Chromatographic analysis of 5-n-alk(en)ylresorcinols during their preparation

Analysis of 5-n-alk(en)ylresorcinols during the coarse of their preparation from rye grains showed that changes of the composition of 5-n-alkylresorcinol homologues in acetone oil; raw preparation, and alkylresorcinol fraiction obtained after chromatography on silica gel, were insignificant. About 20% of alk(en)-ylresorcinals were washed out from acetone oil with pentane. Over 50% of alk(en)ylresorcinols eluted by pentane constituted homologues with unsaturated hydrocarbon chains (5-n-alkenylresorcinols). Preparation obtained after chromatagraphic separation constituted a mixtureof 5-n-alk(en)ylresorcinols width saturated hydrocarbon chains (5-n-alkylresorcinols).