150407-69-5, (S)-1-((Benzyloxy)carbonyl)-4-(tert-butoxycarbonyl)piperazine-2-carboxylic acid is a piperazines compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated
11.2 g (34.9 mmol) TBTU and 5.5 mL (39.6 mmol) triethylamine were added to a mixture, cooled to 0 C., of 12.2 g (32.8 mmol) 1-benzyl-4-tert-butyl(S)-piperazine-1,2,4-tricarboxylate and 30 mL EtOH in 150 mL THF, stirred for another 30 min at this temperature and then stirred for 68 h at RT. 600 mL diethyl ether were added to the reaction mixture, it was combined with 200 mL saturated NaHCO3 solution, the aqueous phase was separated off, the organic phase was washed with saturated NaCl solution and dried over Na2SO4. After elimination of the desiccant and solvent the residue was purified by chromatography (silica gel, gradient PE/EtOAc 4:1 to 7:3). Yield: 11.35 g (88% of theory) ESI-MS: (M+H)+=393 Rf=0.38 (Polygram-silica gel, PE/EtOAc 3:1), 150407-69-5
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Reference：
Patent; Mueller, Stephan Georg; Rudolf, Klaus; Lustenberger, Philipp; Schaenzle, Gerhard; Santagostino, Marco; Stenkamp, Dirk; Arndt, Kirsten; Doods, Henri; US2007/49581; (2007); A1;,
Piperazine – Wikipedia
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