ethyl 2-(3-(2-(chlorosulfonyl)-4-methylphenylthio)-2,6,6-trimethyl-4-oxo-4,5,6,7-tetrahydro-1H-indol-1-yl)acetate 、
四氢吡咯 在
三氟乙酸 、
ethyl 2-(2,6,6-trimethyl-3-(4-methyl-2-(pyrrolidin-1-ylsulfonyl)phenylthio)-4-oxo-4,5,6,7-tetrahydro-1H-indol-1-yl)acetate 作用下,
以
二氯甲烷 为溶剂,
反应 12.0h,
以afforded desired product, ethyl 2-(2,6,6-trimethyl-3-(4-methyl-2-(pyrrolidin-1-ylsulfonyl)phenylthio)-4-oxo-4,5,6,7-tetrahydro-1H-indol-1-yl)acetate (0.082 g, 0.158 mmol, 22.75% yield) as a brown solid的产率得到ethyl 2-(2,6,6-trimethyl-3-(4-methyl-2-(pyrrolidin-1-ylsulfonyl)phenylthio)-4-oxo-4,5,6,7-tetrahydro-1H-indol-1-yl)acetate