非表示:
キーワード:
asymmetric catalysis; bifunctional catalysis; desymmetrization; organocatalysis
要旨:
Naturally synthetic: Acid/base catalyst (S)‐1 can be used in highly enantioselective alcoholytic desymmetrizations of meso anhydrides. For example, the methanolysis of cyclobutane anhydride derivative 2 gave hemiester 3 in 99:1 e.r. (see scheme). Ester 3 was used in a short enantioselective synthesis of (+)‐grandisol.
