71301-98-9Relevant articles and documents
Resolution of (R, S)-ethyl-2-(4-hydroxyphenoxy) propanoate using lyophilized mycelium of Aspergillus oryzae WZ007
Zheng, Jian-Yong,Wu, Jia-Yu,Zhang, Yin-Jun,Wang, Zhao
, p. 62 - 66 (2013/10/01)
The mycelium of Aspergillus oryzae WZ007 was successfully developed to kinetic resolution of (R, S)-ethyl-2-(4-hydroxyphenoxy) propanoate ((R, S)-EHPP) for production of (R)-ethyl-2-(4-hydroxyphenoxy) propanoate ((R)-EHPP). The key biocatalytic process parameters (pH, temperature, rotation speed and substrate concentration) were optimized. Under the optimum conditions, the optical purity of (R)-EHPP was improved up to >99% when the conversion was above 49%. A. oryzae WZ007 whole-cell lipase exhibited high reaction capacity, enantioselectivity and good reusability. The tolerable substrate concentration was 0.5 mol/L, and dry mycelium of A. oryzae WZ007 maintains over 80% of its initial activity after eight repeating cycles. Therefore the enzymatic preparation of (R)-EHPP route was suitable for industrial application.
A PROCESS FOR OPTICAL PURE (R)-2-PHENOXYPROPIONIC ACID DERIVATIVES
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Page/Page column 7-8, (2008/06/13)
The present invention relates to a method for manufacturing optically active (R)-2-phenoxypropionic acid derivatives. More particularly, the present invention relates to a method for manufacturing optically active (R)-2-phenoxypropionic acid derivatives with high purity by using p-substituted phenol derivatives and alkyl (S)-2-arylsulfonyloxypropionate as starting materials and reacting them at 60 to 100 °C in the presence of an alkalimetal salt as a base and. a hydrocarbon solvent.