title: C sp 3-H bond activation triggered by formation of metallacycles: rhodium(I)-catalyzed cyclopropanation/cyclization of allenynes.
abstract: Giving direction: An C sp 3-H bond activation directed by a rhodacycle intermediate has been found to occur in a Rh(I)-catalyzed reaction between an allene moiety having a tert-butyl substituent, and tethered alkynes. Cyclic compounds containing a cyclopropane ring were obtained in good to high yields (up to 92%).
authors: Faculty of Pharmaceutical Sciences, Hokkaido University, Nishi 6, Kita 12, Kita-ku, Sapporo 060-0812, Japan. biyo@pharm.hokudai.ac.jp
authors: Yoshihiro
authors: Y
authors: Oonishi
authors: Yoshitaka
authors: Y
authors: Kitano
authors: Yoshihiro
authors: Y
authors: Sato
mesh_terms: D000480:Alkynes / Q000138:chemical synthesis / Q000737:chemistry*; D002384:Catalysis; D003500:Cyclization; D003521:Cyclopropanes / Q000138:chemical synthesis* / Q000737:chemistry; D012238:Rhodium / Q000737:chemistry*
chemical_list: D000480:Alkynes; D003521:Cyclopropanes; C030797:cyclopropane; D012238:Rhodium