反応 #10989

反応方程式

ethyl 3-(4,7-dichloro-1,3-dioxo-1,3-dihydro-isoindol-2-yl)-2-(2-methyl-[1,3]dioxolan-2-yl)propionate

p-toluenesulfonic acid monohydrate

→

Ethyl 2-(4,7-dichloro-1,3-dioxo-1,3-dihydro-isoindol-2-ylmethyl)-3-oxo-butyrate

反応条件

実験手順

Ethyl 2-(4,7-dichloro-1,3-dioxo-1,3-dihydro-isoindol-2-ylmethyl)-3-oxo-butyrate was prepared (264 mg, 26%) in the same manner as described in the above example 6 (20) from ethyl 3-(4,7-dichloro-1,3-dioxo-1,3-dihydro-isoindol-2-yl)-2-(2-methyl-[1,3]dioxolan-2-yl)propionate (1.13 g, 2.80 mmol) and p-toluenesulfonic acid monohydrate (100 mg), and the obtained product was identified with the following NMR data.

出典