1-Methacryloylindoline-2-carboxylic acid ethyl ester → 1-(3-Acetylthio-2-methylpropanoyl)-indoline-2-carboxylic acid ethyl ester

Participants

Reaction Steps

The mixture of 3.0 g of 1-methacryloylindoline-2-carboxylic acid ethyl ester and 0.97 g of thioacetic acid is stirred under nitrogen at room temperature for 4 days. Traces of thioacetic acid are removed by distillation, to give the 1-(3-acetylthio-2-methylpropanoyl)-indoline-2-carboxylic acid ethyl ester, showing peaks in the NMR-spectrum at 9.45, 2.33 and 1.25 ppm. Said compound can also be prepared analogous to the method illustrated by Example 1.

Provenance & Evidence