Add time:08/31/2019         Source:sciencedirect.com

Optically active α-(tetrazol-1-yl)-substituted carboxylic acid OBO-esters were synthesized from the corresponding a-isocyano OBO-esters and trimethylsilyl azide in up to 92% yield. Subsequent acidic hydrolysis proceeds without epimerization and makes it possible to prepare enantiomerically pure α-(tetrazol-1-yl)-substituted carboxylic acids in up to 89% yield.

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