CARBON-HALOGEN BOND-CLEAVAGE REACTION CATALYZED BY ORGANOYTTRIUM HYDRIDE (IN-SITU) AND LANTHANIDE ALKOXIDES

Organic halides can be ubiquitous long-lived contaminants to the envir onment. Dehalogenation of organic halides with sodium hydride (NaH) as reductant catalyzed by two varieties of lanthanides was reported in r espect of environmental remediation. The first catalyst is a dicyclope ntadienyl yttrium halide, and organoyttrium hydride was thought to be the reactive species. The second catalyst is a lanthanide isopropoxide which showed higher catalytic reactivity, and an aggregate is involve d in the suggested mechanism.