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The kinetic resolutions of (±)-β-azidophenylethanols were carried out using lipase from Candida antarctica, and enantiomerically enriched (R)-β-azidophenylethanols and their corresponding (S)-β-azidophenylethyl acetates were obtained in good enantiomeric excesses (up to > 99%). The enantiomerically enriched (R)-β-azidophenylethanols were subjected to cyclization reaction with 2-(trimethylsilyl)phenyl triflate and CsF producing chiral 1,2,3-benzotriazole compounds in good yields (75-86%) by a [3 + 2] cycloaddition, which involves the benzyne formation.As resoluções cinéticas de (±)-β-azidofeniletanóis foram realizadas usando a lipase de Candida antarctica fornecendo os compostos enantiomericamente enriquecidos, (R)-β-azidofeniletanóis e acetato de (S)-β-azidofeniletila em bons excessos enantioméricos (até > 99%). Os (R)-β-azidofeniletanóis enantiomericamente enriquecidos foram submetidos à reação de ciclização com o triflato de 2-(trimetilsilil)fenila e CsF resultando em 1,2,3-benzotriazóis em bons rendimentos (75-86%) pela reação de cicloadição [3 + 2], a qual envolve a formação in situ de benzino

Chemoenzymatic Resolution of β-Azidophenylethanols byCandida antarcticaand their Application for the Synthesis of Chiral Benzotriazoles