申请人:CASALNUOVO ALBERT LOREN
公开号:US20080306259A1
公开(公告)日:2008-12-11
The present invention pertains to a process for preparing a compound of Formula I that is achiral, racemic or enantiomerically enriched at the hydroxylation center indicated by *
comprising contacting a compound of Formula II
with an oxidant selected from oxygen, hydrogen peroxide, peracids or alkyl hydropetoxides in the presence of a zirconium complex, wherein R
1
, R
2
and R
3
are as defined in the disclosure. This invention also pertains to zirconium complexes useful in this procedure comprising zirconium and a ligand of Formula III or its enantiomer
wherein J, R
6
and n are as defined in the disclosure. This invention further pertains to a compound of Formula III or its enantiomer.
本发明涉及一种制备公式I化合物的方法,该化合物是在羟基化中心处无手性、外消旋或对映富集的,所述方法包括将公式II化合物与氧、过氧化氢、过酸或烷基过氧化物等氧化剂在锆配合物的存在下接触,其中R1、R2和R3如本文所定义。本发明还涉及在该过程中有用的锆配合物,其包括锆和公式III配体或其对映体,其中J、R6和n如本文所定义。本发明还涉及公式III或其对映体的化合物。