Oxazirconacyclooctene intermediate

Coupling of 2,3-dihydrofuran with alkene-zirconocene <2004AGE3932> or aryne-zirconocene <2005SL2513> complexes and subsequent addition of an electrophile provided rA-disubstituted homoallylic alcohols, as illustrated in Equation (130). An insertion//3-elimination pathway that involved the formation of an oxazirconacyclooctene intermediate was proposed for the reaction mechanism. 

Coupling of dihydrofuran with an alkene-zirconocene complex and subsequent addition of an electrophile, provided the cw-disubstituted homoallylic alcohol, as shown in the example below. An insertion/p-elimination pathway involving the formation of an oxazirconacyclooctene intermediate was proposed <04AG(E)3932>. 

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See also in sourсe #XX -- [ ]

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