...
首页> 外文期刊>Pestycydy >Ethyl (1S, 2RS)- and (1S,2S)-2-(2-chloropropanoyloxy)propanoate. Preparation and hydrolysis.
【24h】

Ethyl (1S, 2RS)- and (1S,2S)-2-(2-chloropropanoyloxy)propanoate. Preparation and hydrolysis.

机译:乙基(1 S ,2 RS )-和(1 S ,2 S )-2-(2 -氯丙酰氧基)丙酸酯。制备和水解。

获取原文
获取原文并翻译 | 示例
   

获取外文期刊封面封底 >>

       

摘要

Ethyl (1S,2RS)-2-(2-chloropropanoyloxy)propanoate ((1S,2RS)-(I)) was obtained from rac-2-chloropropionyl chloride and ethyl L-lactate. (1S,2S)-(I) was also synthesized from (S)-2-chloropropionyl chloride and ethyl L-lactate with 93% d.e. (I) was hydrolysed in NaOH/THF-H2O, Na2CO3/THF-H2O, LiOHxH2O/THF-H2O and 25% NaOH/H2O, and in weakly acidic ion-exchange resin Amberlite IRC748 dispersion in MeOH. (1S,2RS)-2-(2-Chloropropanoyloxy)propanoic acid (II) diastereomers were identified as products of acidic hydrolysis with the ionic resin. The GC/MS, HPLC and HPLC/MS analyses of the resultant products are presented.
机译:(1 S ,2 RS )-2-(2-氯丙酰氧基)丙酸乙酯((1 S ,2 RS -2-氯丙酰氯和L-乳酸乙酯。 (1)S ,2 S )-(I)还由( S )-2-氯丙酰氯和L-乳酸乙酯合成, 93%的(I)在NaOH / THF-H 2 O,Na 2 CO 3 / THF-H 2 O,LiOHxH 2 O / THF-H 2 O和25%NaOH / H 2 O以及弱酸性离子交换树脂Amberlite IRC748在MeOH中的分散体。经鉴定,(1iS,i,2iRS,)-2-(2-氯丙酰氧基)丙酸(II)非对映异构体是用离子树脂进行酸性水解的产物。给出了所得产物的GC / MS,HPLC和HPLC / MS分析。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号