Alumina Catalysed Knoevenagel Condensations of Ferrocene-1,1′-Dicarboxaldehyde

Several symmetrically and unsymmetrically bifunctionalised solvatochromic ferrocene derivatives have been synthesised via alumina catalysed Knoevenagel reactions of ferrrocene-1,1′-dicarboxaldehyde.     

Structural and Physical Characterization of (Nitrato)iron(III) Porphyrinates [Fe(por)(NO(3))] - Variable Coordination of Nitrate

We report the X-ray crystal structures of two different iron(III) porphyrinates: [Fe(OEP)(NO₃)] and [Fe(TPP)(NO₃)]. The first complex has the nitrate ion coordinated by a single oxygen atom while the second derivative has the nitrate coordinated in a symmetric bidentate fashion. This latter structure is a redetermination that shows some differences from an earlier structure; the difference appears to be the result of an unrecognized nitrate ion disorder in the earlier structure determination. Changes in physical properties of three species [Fe(TPivP)(NO₃)], [Fe(OEP)(NO₃)], and [Fe-(TPP)-(NO₃)] as a function of coordination mode were examined by Mössbauer and EPR spectroscopies; EPR spectra appear to be most sensitive to the change in coordination mode.     

A One-Pot Conversion of Cyclic Anhydrides to Ethyl ω-Dialkylaminoalkanoates

Ethyl ω-dialkylaminoalkanoates are conveniently obtained in good yield by a one-pot procedure from cyclic anhydrides by successive treatment with a secondary amine, triethyloxonium fluoroborate, and sodium borohydride.