A new iridoid glucoside, sesinoside (1), was isolated from the seedlings of Sesamum indicum. The structure of 1 was elucidated by spectroscopic analyses and by methanolysis of 1, which produced the known compounds, phlorigidosides C (2) and (6Z)-foliamenthic acid methyl ester (3). This is the first report of an iridoid glucoside with 3.

A micro spectrophotometric procedure for the quantitative determination of plasmalogen aldehydes is described which utilizes simultaneous methanolysis and formation of 2,4-dinitrophenylhydrazones. After isolation of the hydrazones by thin-layer chromatography, the aldehydes can be regenerated, reduced, acetylated, and then analyzed by gas-liquid chromatography. Identification of the plasmalogen...

An Al(porphyrin) functionalized with a large axial ligand was incorporated into a porous organic polymer (POP) using a cobalt-catalyzed acetylene trimerization strategy. Removal of the axial ligand afforded a microporous POP that is catalytically active in the methanolysis of a nerve agent simulant. Supercritical CO2 processing of the POP dramatically increased the pore size and volume, allowin...

The novel nanomaterials Au x Pd y @ZIF-8 catalyze H 2 -producing ammonia borane methanolysis; the reaction is considerably boosted by visible-light irradiation and ZIF-8 surpassing other supports. KIE studies DFT calculations delineate mechanism.

Methanolysis of vegetable oils in the presence homogeneous catalysts remains most important process for producing biodiesel. However, there is still a lack accurate description reaction kinetics. This part due to complexity reacting system which large number interconnected reactions take place simultaneously. In this work, attention focused on biphasic character medium, formed by two immiscible...

Measurement in acetonitrilemethanol of the basicity of selenenamides shows that they are approximately 3 pK units more basic than the corresponding sulfenamides. Since other explanations do not seem tenable, this apparently results from the fact that selenium is less electronegative than sulfur, although it is somewhat surprising that the small difference in the electronegativity of the two ele...

Highly enantioselective methanolysis of meso-cyclic anhydride was achieved with bifunctional organocatalyst containing a quinine-thiourea moiety; unusual concentration, temperature and solvent effects on the enantioselectivity can be explained in terms of a mechanism involving monomer-dimer equilibration of the catalyst.