反应详情

10 mmol of ethyl 7-(2-methylphenyl)-5-methylamino-1-oxo-1,3,4,7-tetrahydrobenzo[c]furan-6-carboxylate are dissolved in 50 mmol of THF, 3 ml of concentrated HCl and 5 ml of water are added, and the mixture is boiled for 1 hour and then concentrated. The substance is identical to that from Example 3a.

1. concentrationconcentrated