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CAS No. : | 57090-45-6 | MDL No. : | MFCD00135169 |
Formula : | C3H7ClO2 | Boiling Point : | - |
Linear Structure Formula : | - | InChI Key : | SSZWWUDQMAHNAQ-VKHMYHEASA-N |
M.W : | 110.54 | Pubchem ID : | 148793 |
Synonyms : |
|
Signal Word: | Danger | Class: | 8,6.1 |
Precautionary Statements: | P261-P270-P202-P201-P271-P264-P280-P308+P313-P361+P364-P332+P313-P301+P310+P330-P302+P352+P312-P304+P340+P312-P305+P351+P338+P310-P405-P501 | UN#: | 2922 |
Hazard Statements: | H300-H311-H332-H315-H318-H361 | Packing Group: | Ⅲ |
GHS Pictogram: |
* All experimental methods are cited from the reference, please refer to the original source for details. We do not guarantee the accuracy of the content in the reference.
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
26% | With Aspergillus niger epoxide hydrolases immobilized onto modified Eupergit C; In aq. phosphate buffer; dimethyl sulfoxide; at 25℃; for 3h;pH 6.5;Enzymatic reaction;Kinetics; | General procedure: Asymmetric hydrolysis of (R/S)-SO, (R/S)-PO and (R/S)-ECH were examined in a batch type reactor (1.1 cm × 5 cm). To 1.5 mL of 100 mM phosphate buffer (pH = 7.0 for the free and EHIL; pH = 6.5 for EHIF and EHIE), 100 L of the free EH solution (1 mg mL-1) or 30 mg of each immobilized EH was loaded and the mixture kept at 25 C for 2 min. The reaction was initiated by the addition 0.4 mL of each racemic epoxide solution (0.5 M in DMSO). A hundred microliters of aliquots withdrawn at different time intervals (15, 30,60, 90, 120, 180 and 240 min) were mixed with 400 L of diethylether and analyzed by a Shodex ORpak CDC-453 HQ chiral HPLC column (4.6 mm × 150 mm) according to Yildirim et al. [23]. The enantiomers of styrene oxide and their vicinal diols were detected at 220 nm. The enantiomers of propylene oxide, epichlorohydrin and their vicinal diols were detected using a refractive index detector (Shimadzu RID-10A). The optical configurations of remaining epoxides and formed diols were identified by comparing the retention time of these compounds with their optically active standard forms. The enantiomeric excess (ee) values of formed vicinal diol and remaining epoxide were calculated from the equations: eeepoxide=([S-R]epoxide)/([S+R]epoxide) and eediol=([R-S]diol)/([R+S]diol) The enantiomeric ratio values (E) of free and immobilized EHs were calculated from the equation proposed by Chen et al. [27]. E=(Vmax(R)/Km(R))/(Vmax(S)/Km(S)) where Vmax(R) and Km(R) values are maximum velocity and Michealis-Menten constant of free and immobilized EH preparations toward (R)-enantiomer of epoxide and Vmax(S) and Km(S) are corresponding values toward (S)-enantiomer of epoxide. |
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