Preparation and Reactions of (1H-Tetrazol-5-yl)zinc Pivalates

The preparation and reactivity of new solid heterocyclic organozinc reagents, namely N-protected (1H-tetrazol-5-yl)zinc pivalates, as storable solids with appreciably air and moisture stability are reported. They are obtained in high yields from protected 1H-tetrazoles by deprotonation using the mixed zinc–magnesium base TMPZnCl·Mg(OPiv)₂ (abbreviated as TMPZnOPiv; TMP = 2,2,6,6-tetramethylpiperidyl). Subsequent cross-couplings and copper-catalyzed electrophilic aminations using hydroxylamine benzoates give access to functionalized 1H-tetrazoles while tolerating many functional groups.

Key words

zinc - tetrazole - cross-coupling - amination - organozinc pivalates

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References

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