Process for preparing cis-5-[1-(4-chlorophenyl)-methylene]-1-hydroxymethyl-2,2-dimethylcyclopentanol
申请人:BASF AGRO B.V., ARNHEM (NL), ZÜRICH-BRANCH
公开号:US20150018560A1
公开(公告)日:2015-01-15
The present invention relates to a process for preparing a diol of the formulae (Ia) or (Ib), or a mixture thereof,
comprising the reaction of an epoxy alcohol of formulae (Va) or (Vb), or a mixture thereof,
with alkali metal borohydride or earth alkaline borohydride, in particular sodium borohydride, and anhydrous aluminum(III) chloride.
The invention also relates to processes and intermediates for preparing an epoxy alcohol of formulae (Va) or (Vb). The invention furthermore relates to processes for preparing cis-metconazole in which a diol of the formulae (Ia) or (Ib) is applied as a precursor.
本发明涉及一种制备式(Ia)或(Ib)的二元醇或其混合物的方法,包括将式(Va)或(Vb)的环氧醇或其混合物与碱金属硼氢化物或碱土金属硼氢化物,特别是氢氧化钠硼氢化物和无水氯化铝(III)反应。本发明还涉及制备式(Va)或(Vb)的环氧醇的方法和中间体。本发明还涉及一种以式(Ia)或(Ib)的二元醇作为前体制备顺式-甲肟唑的方法。