Aminoacetaldehyde dimethyl acetal → Methyl 4-chloro-3-{[[(2,2-dimethoxyethyl)amino](oxo)acetyl]amino}benzoate

Participants

Reaction Conditions

Reaction Steps

A solution of methyl 4-chloro-3-{[ethoxy(oxo)acetyl]amino}benzoate (Example 330b, 11.2 g) dissolved in ethyl acetate (80 mL) was treated with aminoacetaldehyde dimethyl acetal (5.08 mL) under nitrogen. The resulting mixture was stirred at 20° C. for 3 h. The reaction mixture was diluted with diethyl ether (100 mL) and stirred at room temperature overnight. The solid formed was filtered off and dried under vacuum to afford the subtitle compound (12.64 g).

Provenance & Evidence