A combination of inorganic acidic salts or silica gelsupported inorganic acids and sodium nitrite in the presence of wet SiO2 was used as an effective oxidizing agent for the oxidation of urazoles and bis-urazoles to their correspondi
N-trimellitylimido-l-leucine (3) was prepared from the reaction of trimellitic anhydride (1) with l-leucine (2)
N-trimellitylimido-l-leucine (3) was prepared from the reaction of trimellitic anhydride (1) with l-leucine (2)
The reactions of aliphatic alcohols with p-toluenesulfinic acid are accelerated by microwave irradiation under solvent-free conditions in the presence of silica gel to afford a high yielding synthesis of p-toluenesulfinate esters.
A new facile and rapid polycondensation reaction of 4,4′-(hexafluoroisopropylidene)-N,N′-bis(phthaloyl-L-leucine) diacid chloride (1) with several aromatic diols such as phenol phthalein (2a), bis phenol-A (2b), 4,4′-hydroquinone (2c), 1,4-dihydroxyanthraquinone (2d), 1,8-dih
A new facile and rapid polycondensation reaction of 4,4′-(hexafluoroisopropylidene)-N,N′-bis(phthaloyl-L-leucine) diacid chloride (1) with several aromatic diols such as phenol phthalein (2a), bis phenol-A (2b), 4,4′-hydroquinone (2c), 1,4-dihydroxyanthraquinone (2d), 1,8-dih