Please use this identifier to cite or link to this item:
https://doi.org/10.1002/chir.20021
DC Field | Value | |
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dc.title | Study of the Characterization and Crystallization of 4-Hydroxy-2-Pyrrolidone | |
dc.contributor.author | Wang, X.J. | |
dc.contributor.author | Wiehler, H. | |
dc.contributor.author | Ching, C.B. | |
dc.date.accessioned | 2014-04-25T09:05:59Z | |
dc.date.available | 2014-04-25T09:05:59Z | |
dc.date.issued | 2004 | |
dc.identifier.citation | Wang, X.J., Wiehler, H., Ching, C.B. (2004). Study of the Characterization and Crystallization of 4-Hydroxy-2-Pyrrolidone. Chirality 16 (4) : 220-227. ScholarBank@NUS Repository. https://doi.org/10.1002/chir.20021 | |
dc.identifier.issn | 08990042 | |
dc.identifier.uri | http://scholarbank.nus.edu.sg/handle/10635/51838 | |
dc.description.abstract | A systematic study of the characterization for racemic species of 4-hydroxy-2-pyrrolidone was undertaken. The melting point phase diagram of (R)- and (S)-4-hydroxy-2-pyrrolidone was determined by differential scanning calorimetry. The ternary phase diagram of (R)- and (S)-4-hydroxy-2-pyrrolidone with isopropanol was constructed at 15, 20, 25, and 35°C. The crystalline nature of 4-hydroxy-2-pyrrolidone racemate was also characterized by means of comparison of solid-state FTIR spectra and powder X-ray diffraction patterns of the racemic mixture with those of one of the enantiomers. It is shown that (±)-4-hydroxy-2-pyrrolidone is a racemic conglomerate. The enthalpies of fusion of (R)-4-hydroxy-2-pyrrolidone and (±)-4-hydroxy-2-pyrrolidone and entropy of mixing of (R)- and (S)-4-hydroxy-2-pyrrolidone were calculated using the thermodynamic data. The solubility and supersolubility diagrams of (R)- and (S)-4-hydroxy-2-pyrrolidone in isopropanol were determined over a temperature range of 4-35°C. The optical resolution of (± )-4-hydroxy-2-pyrrolidone was successfully achieved by preferential crystallization. © 2004 Wiley-Liss, Inc. | |
dc.description.uri | http://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1002/chir.20021 | |
dc.source | Scopus | |
dc.subject | 4-hydroxy-2-pyrrolidone | |
dc.subject | Characterization | |
dc.subject | Metastable zone | |
dc.subject | Phase diagram | |
dc.subject | Preferential crystallization | |
dc.type | Conference Paper | |
dc.contributor.department | CHEMICAL & BIOMOLECULAR ENGINEERING | |
dc.contributor.department | CHEMICAL AND PROCESS ENGINEERING CENTRE | |
dc.description.doi | 10.1002/chir.20021 | |
dc.description.sourcetitle | Chirality | |
dc.description.volume | 16 | |
dc.description.issue | 4 | |
dc.description.page | 220-227 | |
dc.description.coden | CHRLE | |
dc.identifier.isiut | 000220854600003 | |
Appears in Collections: | Staff Publications |
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