allyl 9-methyl-4-oxo-2,3,4,9-tetrahydro-1H-carbazole-3-carboxylate 、 alkaline earth salt of/the/ methylsulfuric acid 在
sodium hydride 作用下,
以
四氢呋喃 、 mineral oil 为溶剂,
反应 2.33h,
以87%的产率得到(rac)-allyl 3-(2-ethoxy-2-oxoethyl)-9-methyl-4-oxo-2,3,4,9-tetrahydro-1H-carbazole-3-carboxylate