5625-67-2, Piperazin-2-one is a piperazines compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated
5625-67-2, Reference Example 3 4-(Tert-butoxycarbonyl)-2-piperazinone To a mixture of 2-piperazinone (3.00 g) and acetonitrile (50 ml) was added dropwise di-tert-butylbicarbonate (7.20 g), and the mixture was stirred at room temperature for 2 hours. The reaction solution was concentrated under reduced pressure, and precipitated crystals were washed with ether to give colorless crystals of the title compound (4.77 g). 1H-NMR (CDCl3) delta: 1.48 (9H, s), 3.33-3.43 (2H, m), 3.64 (2H, t, J=5.3 Hz), 4.09 (2H, s), 6.40-6.70 (1H, br). IR (KBr): 1696, 1667, 1400, 1341, 1130 cm-1.
As the paragraph descriping shows that 5625-67-2 is playing an increasingly important role.
Reference：
Patent; Takeda Chemical Industries, Ltd.; US6403595; (2002); B1;,
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