Biotechnology Letters

, Volume 25, Issue 3, pp 219–222 | Cite as

(R)-Oxynitrilase-catalysed synthesis of chiral silicon-containing aliphatic (R)-ketone-cyanohydrins

  • Ning Li
  • Min-Hua Zong
  • Chen Liu
  • Hua-Song Peng
  • Hua-Chang Wu
Article

Abstract

Optically active 2-trimethylsilyl-2-hydroxyl-ethylcyanide was prepared by enzymatic enantioselective transcyanation of acetyltrimethylsilane with acetone cyanohydrin in a biphasic system at 35 °C and pH 5. (R)-Oxynitrilase from apple seed meal was the best among all the enzymes explored and diisopropyl ether was the most suitable organic phase. Acetyltrimethylsilane was a better substrate of the enzyme than its carbon analogue. The substrate conversion and product enantiomeric excess of 2-trimethylsilyl-2-hydroxyl-ethylcyanide were >99% and >99%, respectively.

asymmetric synthesis cyanohydrin organosilicon (R)-oxynitrilase 2-trimethylsilyl-2-hydroxyl-ethylcyanide 

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Copyright information

© Kluwer Academic Publishers 2003

Authors and Affiliations

  • Ning Li
    • 1
  • Min-Hua Zong
    • 1
  • Chen Liu
    • 1
  • Hua-Song Peng
    • 1
  • Hua-Chang Wu
    • 1
  1. 1.Biotechnology DepartmentSouth China University of TechnologyGuangzhouP.R. China

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