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2004
Cyclopropane derivatives
Q 0021
Access to Functionalized Cyclopropylcarbinyl Compounds from Homoallylic
via Zirconocene Intermediates. — Treatment of homoallylic ethers such as
49- 063 Ethers
(I) and (XV) with (1-butene)ZrCp2, generated in situ, gives cycloproylcarbinylzirconium complexes. They can be intercepted by a variety of nucleophiles yielding cyclopropylmethyl derivatives. Treatment with MeLi prior to the addition of nucleophiles gives
ring-opened products [cf. (XIV)]. — (VASSE, J.-L.; SZYMONIAK*, J.; Tetrahedron
Lett. 45 (2004) 34, 6449-6451; Lab. React. Sel. Appl., CNRS, Univ.
Reims-Champagne-Ardenne, F-51687 Reims, Fr.; Eng.) — Mais
2004
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