Ethylene chlorohydrin




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2-chloroethanol persistence was followed up for 6 months

Time:2015/12/18 5:50:26

Enantiomeric separation of (RS)1-(4-chlorophenyl)-2-chloroethanol by lipase catalyzed hydrolysis of its acetate

rocess for the preparation of one or both enantiomers of 1-(4-chlorophenyl)-2-chloroethanol, which comprises an enantioselective enzymatic hydrolysis of (±)-α-(4-chlorophenyl)chloroethyl acetate by means of an enzyme which is horse liver acetone powder, lipase PS from Pseudomonas fluorescens, lipase AK from Pseudomonas or the lipase from Candida antarctica, to give a mixture of unhydrolysed R-(-)-α-(4-chlorophenyl)chloroethyl acetate and S-(+)-1-(4-chlorophenyl)-2-chloroethanol, and optional separation of R-(-)-α-(4-chlorophenyl)chloroethyl acetate and optional hydrolysis of it to give R-(-)-1-(4-chlorophenyl)-2-chloroethanol and use of the enantiomers of 1-(4-chlorophenyl)-2-chlorethanol for the preparation of the enantiomers of eliprodil and of their salts.

[Decontamination of some spices by ethylene oxide. Development of 2-chloroethanol and ethylene glycol during the preservation].

Abstract After the disinfection by ethylene oxide and storage by ethylene oxide in definite conditions of 16 spices (parsley, chervil, tarragone, chive, thyme, rosemary, coriander, nutmeg, mace, cinnamon, allspices, clove, pepper), the authors observed the fast loss of residual ethylene oxide and ethyleneglycol. On the contrary, the persistence of 2-chloroethanol was followed up for 6 months. They turn their attention to the toxicity of this compound to ensure the protection of customers.