((2S,3S)-2-tert-Butyl-3-methyl-4-oxo-oxetan-3-yl)-acetic acid methyl ester 、
异丁醛 在
lithium diisopropyl amide 作用下,
以
四氢呋喃 为溶剂,
反应 0.67h,
生成
(2R,3R,4S)-2-Isopropyl-4-methyl-5-oxo-tetrahydro-furan-3-carboxylic acid methyl ester 、 (3S,3aS,6S,6aS)-3-tert-Butyl-6-isopropyl-3a-methyl-tetrahydro-furo[3,4-c]furan-1,4-dione 、 (3S,3aS,6R,6aS)-3-tert-Butyl-6-isopropyl-3a-methyl-tetrahydro-furo[3,4-c]furan-1,4-dione