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jinfeizuo

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7Â¥2008-03-28 18:48:33
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snoopy896

A solution containing 0.3 kg of sodium hydroxide dissolved in 1.0 liter of deionized water [(DIW)] was prepared and injected into a 27 liter reaction vessel. The sodium hydroxide solution in the reaction vessel was cooled to room temperature with an ice/salt bath, and then 0.5 kg of L-prolin was added to the alkaline solution and dissolved with stirring, making a solution having a 1: 2 ratio of L-proline to [NAOH.] Cooling of the solution was continued to a temperature [OF-10.deg.C] to [10.deg.C.] The reaction medium was then diluted with about 2 liters of ethanol. The reaction vessel was purged with nitrogen gas and kept under a constant nitrogen atmosphere during the remainder of the synthesis process.

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Publ.: WO2003/99784 A1 (2003/12/04), Appl.: WO2003-US14890 (2003/05/08)Äã¿ÉÒÔ°ÑרÀûµ÷³öÀ´
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snoopy896

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