Efficient and Regioselective Synthesis of 5-Hydroxy-2-isoxazolines: Versatile Synthons for Isoxazoles, β-Lactams, and γ-Amino Alcohols
摘要:
An efficient and highly regioselective protocol was developed for the preparation of 5-hydroxy-2-isoxazolines, which have been proved to be versatile synthons for isoxazles, beta-hydroxy oximes, and gamma-amino alcohols. beta-Lactams, commonly embedded in the skeletons of bioactive natural products, were also synthesized in two steps from beta-hydroxy oximes, providing a new strategy for the synthesis of this kind of compounds.
由β-二甲基氨基乙烯基酮[RC(O)CH CH-NMe 2,其中R Ph,MeO-4-C 6 H 4,F-4- C 6 H 4,Cl-4-C 6 H 4,Br-4-C 6 H 4,O 2 N-4-C 6 H 4,呋喃-2-基,噻吩-2-基,吡咯-2-报道了仅改变反应条件(添加和不添加吡啶)的烷基,Et和CCl 3 ]和盐酸羟胺。