2007

Cyclopropane derivativesQ 0021 Cyclopropyl Carbenoid Insertion into Alkenylzirconocenes — A Convergent Syn-

thesis of Alkenylcyclopropanes and Alkylidenecyclopropanes. — The stereochem-istry of the products is consistent with transmetallation from Li to Zr in formation of an "ate" complex with inversion of the organolithium center. — (THOMAS, E.; KASATKIN, A. N.; WHITBY*, R. J.; Tetrahedron Lett. 47 (2006) 52, 9181-9185; Sch. Chem., Univ. Southampton, Southampton SO17 1BJ, UK; Eng.) — D. Singer

15- 055

2007