Tetrahydrofuran → N-methoxycarbonyl-O-methyl-L-tyrosine

Participants

Reaction Steps

A mixture of N-methoxycarbonyl-O-methyl-L-tyrosine benzyl ester (14.5 g), 10% palladium on carbon (0.73 g), and tetrahydrofuran (145 ml)-water (14.5 ml) was shaken under hydrogen at ambient temperature for 2 hours. An additional 10% palladium on carbon (0.73 g) was added to the mixture and shaking was continued for an additional 2 hours. The catalyst was filtered off and washed with tetrahydrofuran. The filtrate and washings were combined and concentrated in vacuo to afford N-methoxycarbonyl-O-methyl-L-tyrosine (10.5 g).

Provenance & Evidence