Abstract
Hydrozirconation of alkenes and alkynes gave functionalized alkanes and stereodefined functionalized alkenes under mild conditions in high yields. For this purpose, commercially provided or in situ generated Cp2ZrHCl (Schwartz reagent) is frequently used. The bulky zirconocene moiety is the critical factor for this big success. It leads to the high regioselectivity during hydrozirconation, and it also contributes to good functional group tolerance by sheltering the reactive point. The alkyl and alkenylzirconium complexes subsequently react with electrophiles to form various CC(X) or CC(X) bonds. To obtain higher or diverse reactivity, transmetalation can be employed to produce widespread synthetic applications.
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