反应详情

2.40 g of N-(7-methoxy-1,2,3,4-tetrahydronaphthalen-1-yl)glycine methyl ester are added dropwise with cooling to 5° C. to 5.52 g of formic acid. Additionally 1.79 g of acetic anhydride are added, and the mixture is kept at room temperature for 70 hours. Destillation under vacuum affords 2.7 g (97% of theory) of N-formyl-N-(7-methoxy-1,2,3,4-tetrahydronaphthalen-1-yl)glycine methyl ester as a colourless resin.