Detail of "52079-23-9"

CAS Number:
52079-23-9
Name:
(S)-(-)-alpha-Hydroxy-gamma-butyrolactone
Molecular Structure:
Formula:
C₄H₆O₃
Molecular Weight:
102.09
Synonyms:
2(3H)-Furanone,dihydro-3-hydroxy-, (S)-;(3S)-3-Hydroxydihydrofuran-2(3H)-one;(3S)-3-Hydroxytetrahydrofuran-2-one;(3S)-Dihydro-3-hydroxy-2(3H)furanone;2(3H)-Furanone,dihydro-3-hydroxy-, (3S)-;(S)-3-Hydroxydihydrofuran-2(3H)-one;(S)-a-Hydroxy-g-butyrolactone;L-a-Hydroxy-g-butyrolactone;
Density:
1.393 g/cm³
Boiling Point:
249.3 °C at 760 mmHg
Flash Point:
122.1 °C
Appearance:
colourless liquid

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Supplier:Hangzhou Imaginechem Co., Ltd [ China (Mainland)]

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4-Substituted-2-hydroxybutanoates and process for producing them: 4-Substituted-2-hydroxybutanoates and process for producing them. Yoshida, Naoyuki; Miyazawa, Kazutoshi (Chisso Corp., Japan). Eur. Pat. Appl. EP 467132 A2 22 Jan 1992, 6 pp. DESIGNATED STATES: R: CH, DE, FR, GB, IT, LI. (European Patent Organization). CODEN: EPXXDW. CLASS: ICM: C07C069-675. ICS: C07C067-307; C07C067-02; C07C255-20; C07C253-16. APPLICATION: EP 91-110749 28 Jun 1991. PRIORITY: JP 90-187095 17 Jul 1990. DOCUMENT TYPE: Patent CA Section: 23 (Aliphatic Compounds) Title compds. XCH2CH2CH(OH)CO2R (I; X = Bu, Cl, iodo, cyano; R = C1-10 alkyl) are prepd. by ring opening of a butyrolactone and esterifying the compd. obtained. Racemic a-hydroxy-g-butyrolactone, vinyl acetate, and lipase PS were reacted to give (R)-(+)-a-acetoxy-g-butyrolactone which was treated with K2CO3, the mixt. stirred for 5 h at room temp. and neutralized with HCl, and after removal of the salt, (R)-(+)-a-hydroxy-g-butyrolactone (II) was obtained. 52079-23-9 and 139768-05-1 are just another two chemicals used in this study. II in EtOH was treated with HCl to give (R)-I (X = Cl, R = Et). .