Synthesis and Characterization of New Chiral Azolinium Salts, Precursors to N-Heterocyclic Carbenes, Derived from l-Proline

Abstract

A short and flexible procedure for the preparation of seven chiral azolinium and five functionalized chiral azolinium salts, precursors to N-heterocyclic carbenes, derived from l-proline has been developed. Moderate to good overall yields were obtained. Some NHC dimers and thiones were isolated. X-ray crystal structure determinations of two [Rh-NHC] complexes were also reported.

Key words

azolinium salts - N-heterocyclic carbene - l-proline - microwave activation

• References

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