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Dry hydrogen chloride gas was bubbled through ice-cold acetyl chloride (400 cm 3) for 5min., with stirring. Methyl-2-(R)-amino-3-hydroxypropionate hydrochloride (50 g, 0.32 mol) was then dissolved in the liquid and the passage of gas curtailed. µ½×îºó£¬Ôõô¶¼ÎÞ·¨Èܽ⣬´ó¼ÒÓÐʲôºÃµÄ½¨Òé |
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