Process for the preparation of paraoxadiazolyphenylboronic acids
申请人:Clariant GmbH
公开号:US06197967B1
公开(公告)日:2001-03-06
Compounds of the formula (I)
are prepared by reacting a compound of the formula (V)
with a compound of the formula (X)
and hydrolyzing the product; or converting the compound of the formula (V) into the hydrazide, and cyclizing and hydrolyzing the latter to give the oxadiazole.
para-Oxadiazolylphenylboronic acids are valuable precursors for active ingredients.