Synthesis and characterization of novel multi-site phase transfer catalyst and its catalytic efficiency for dichlorocarbene addition to citral

Novel soluble “multi-site (6 site)” phase transfer catalyst viz., 1,3,5-tris[4-{2,3-bis(triethylammoniummethylene chloride)}-phenoxymethyl]benzene(TEAMCPB) has been prepared by a simplified method and thoroughly characterized. It is shown to be ≅10-fold higher effective than the commercially available single-site PTCs in catalysing the dichlorocarbene addition to citral under identical reaction conditions.