{[2-(Tert-butoxycarbonylamino)-ethyl]-methyl-amino}-acetic acid benzyl ester → 2-[(2-{[(Tert-butoxy)carbonyl]amino}ethyl)(methyl)amino]acetic acid

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Reaction Steps

162 mg (0.5 mmol) of {[2-(tert-butoxycarbonylamino)-ethyl]-methyl-amino}-acetic acid benzyl ester prepared in Process 3-A was dissolved in methanol (5 mL), and then 5% palladium-carbon was added to it, and this was stirred under a hydrogen atmosphere at room temperature for one hour. After filtering off the insoluble material, the filtrate was concentrated to yield 116 mg (100%) of {[2-(tert-butoxycarbonylamino)-ethyl]-methyl-amino}-acetic acid as a colorless viscous oil.

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