Benzyl 4-(2-(di-tert-butoxyphosphoryloxy)ethyl)piperazine-1-carboxylate → Di-tert-butyl 2-(piperazin-1-yl)ethyl phosphate

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Reaction Steps

A 100 ml flask was charged with benzyl 4-(2-(di-tert-butoxyphosphoryloxy)ethyl)piperazine-1-carboxylate (INTERMEDIATE 58, 0.90 g, 1.97 mmol) in MeOH (19.7 ml) and 10% palladium on charcoal (0.042 g, 0.04 mmol). The reaction mixture was stirred under a hydrogen atmosphere overnight. The reaction mixture was filtered and the filtrate concentrated in vacuo to give the title compound (0.63 g, yield: 99%), which was used in the preparation of INTERMEDIATE 61 without further purification.

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