重氮乙酸乙酯 、 (3aS,4S,6aR)-4-((S)-2,2-Dimethyl-[1,3]dioxolan-4-yl)-2,2-dimethyl-4,6a-dihydro-3aH-[1,3]dioxolo[4,5-c]pyrrole 5-oxide 在
lithium hexamethyldisilazane 作用下,
以
四氢呋喃 为溶剂,
反应 1.5h,
以92%的产率得到ethyl 2-diazo-2-((3aR,4R,6S,6aS)-6-((S)-2,2-dimethyl-1,3-dioxolan-4-yl)-5-hydroxy-2,2-dimethyltetrahydro-4H-[1,3]dioxolo[4,5-c]pyrrol-4-yl)acetate