Alkaline-earth metalation of dimesitylphosphane oxide Mes2P(O)H (1) in ethereal solvents with dialkylmagnesium and alkylmagnesium bromide as well the homoleptic bis(trimethylsilyl)amides calcium, strontium, barium yields [(L)MgR(μ-OPMes2)]2 (L/R=thf/Et (2-Et), Et2O/Br (2-Br)), [(thf)3Ca(hmds)(OPMes2)] (3-hmds), [(thf)3Mg(OPMes2)2] (2-thf) [(thf)4Ae(OPMes2)2] (Ae=Ca (3-thf), Sr (4-thf), Ba (5-th...

Hydroxylic compounds are usually converted into derivatives for analysis by g.1.c. and gas chromatography-mass spectrometry (g.1.c.-m.s.). Trimethylsilyl ethers have found the widest application, but other alkylsilyl derivatives (cf. Harvey & Paton, 1975) and halogenated analogues are of complementary value. Particular interest attaches to t-butyldimethylsilyl ethers ; they are more stable towa...

The aim of the present research work was to determine the Phyto-constituents in fraction collected from ethanolic extract of Pericampylus glaucus leaf using the GC and Mass spectrometry. The Phyto-chemical screening of fraction from ethanolic extract of Pericampylus glaucus leaves were carried out with the help of Perkin-Elmer GC followed by Mass Spectrometry. The GC-MS chromatogram of Pericamp...