Reaction ofα,Β-unsaturated aromatic carboxylic acids with KBr and H2O2 in the presence of Na2MoO4·2H2O in aqueous medium affordsΒ-bromo alkenes in high yields. Metallocene dichlorides, Cp2MCl2 (M = Ti, Zr, or V) catalyse polymerisation of olefins in aqueous medium to afford high molecular weight polymers with low molecular weight distribution.
机构:
Indian Assoc Cultivat Sci, Dept Organ Chem, Kolkata 700032, W Bengal, IndiaIndian Assoc Cultivat Sci, Dept Organ Chem, Kolkata 700032, W Bengal, India