JOURNAL OF ORGANOMETALLIC CHEMISTRY, vol.692, no.22, pp.5026-5032, 2007 (SCI-Expanded)
Synthesis of ferrocenyl-substituted pyrazoles via the reaction between (2-formyl-1-chlorovinyl)ferrocene and hydrazine derivatives is described. Depending upon the substitution pattern of hydrazine, the reaction affords 1-alkyl/aryl-5-ferrocenylpyrazoles and/or 1-alkyl/ aryl-3-ferrocenylpyrazoles. The reaction appears to be general for a variety of hydrazine derivatives. (c) 2007 Elsevier B.V. All rights reserved.