can reductively desymmetrize a large collection of easily available halomalonic esters to α-halo-β-hydroxyesters. These polyfunctionalized tertiary alkyl fluorides, chlorides, and bromides proved to be useful intermediates toward fluorinated drug analogs and polyhalogenated monoterpenes. The facile intramolecularepoxidation of the chiral chloride and bromide products has also enabled expeditious access
Ester compounds and liquid crystal compositions containing the same
申请人:Nippon Mining Co., Ltd.
公开号:US05211879A1
公开(公告)日:1993-05-18
This invention provides novel ester compounds represented by the following general formula (1): ##STR1## (wherein R.sup.1 and R.sup.2 are alkyl groups and may be the same or not, A and B are selected from a single bond and --COO--, X is selected from ##STR2## optically active bodies thereof and liquid crystal compositions containing at least one of these compounds.