2-((S)-2,2-Dimethyl-[1,3]dioxolan-4-ylmethyl)-2-(3-oxo-butyl)-cycloheptane-1,3-dione 在
L-组氨酸 作用下,
以
甲醇 为溶剂,
反应 14.5h,
生成
(S)-4a-((S)-2,2-Dimethyl-[1,3]dioxolan-4-ylmethyl)-4,4a,6,7,8,9-hexahydro-3H-benzocycloheptene-2,5-dione 、 (R)-4a-((S)-2,2-Dimethyl-[1,3]dioxolan-4-ylmethyl)-4,4a,6,7,8,9-hexahydro-3H-benzocycloheptene-2,5-dione