Reaction between an aqueous ethanol solution of tin(II) chloride and that of 4-propanoyl-2,4-dihydro-5-methyl-2-phenyl-3H-pyrazol-3-one in the presence of O2 gave the compound cis -dichlorobis(4-propanoyl-2,4-dihydro-5-methyl-2-phenyl-3H-pyrazol-3-onato) tin(IV) [(C26H26N4O4)...
The copolymers are soluble in chloroform, acetone, dimethyl acetamide, dimethyl formamide, dimethyl sulfoxide, tetrahydrofuran, benzene, toluene, xylene and insoluble in n-hexane and hydroxyl-group-containing solvents such as methanol and ethanol. The...
The progress of the reaction was monitored by TLC during this time and the reaction was shown to be complete after 1h when the color become yellow. The solvent was removed by rotatory evaporator and the solids which separated out were collected and then recrystallized from ethanol to yield the...