Detail of "3123-97-5"

CAS Number:
3123-97-5
Name:
2(3H)-Furanone,dihydro-5,5-dimethyl-
Molecular Structure:
Formula:
C₆H₁₀O₂
Molecular Weight:
114.14
Synonyms:
Valericacid, 4-hydroxy-4-methyl-, lactone (6CI);Valeric acid, 4-hydroxy-4-methyl-, g-lactone (7CI);4,4-Dimethyl-4-butanolide;4,4-Dimethylbutyrolactone;4-Methyl-4-hydroxypentanoic acid lactone;4-Methylpentan-4-olide;5,5-Dimethyldihydrofuran-2(3H)-one;5,5-Dimethyldihydrofuran-2-one;Dihydro-5,5-dimethyl-2(3H)-furanone;Isocaprolactone;NSC 128078;NSC 221122;Tetrahydro-5,5-dimethyl-2-furanone;γ,γ-Dimethyl-g-butyrolactone;γ,γ-Dimethylbutyrolactone;γ,γ-Dimethylvalerolactone;γ-Isocaprolactone;γ-Methyl-g-valerolactone;2(3H)-Furanone, dihydro-5,5-dimethyl-;5,5-Dimethyldihydrofuran-2(3H)-one;Tetrahydro-5,5-dimethyl-2-furanone;
Density:
0.995 g/cm³
Boiling Point:
191.5 °C at 760 mmHg
Flash Point:
66.9 °C

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g,g-Dimethylbutyrolactone electrochemical production: g,g-Dimethylbutyrolactone electrochemical production. (Asahi Chemical Industry Co., Ltd., Japan). Jpn. Kokai Tokkyo Koho JP 59028580 A2 15 Feb 1984 Showa, 5 pp. (Japanese). (Japan). CODEN: JKXXAF. CLASS: IC: C25B003-12; C07D307-32. APPLICATION: JP 82-138375 11 Aug 1982. DOCUMENT TYPE: Patent CA Section: 72 (Electrochemistry) Section cross-reference(s): 27 g,g-Dimethylbutyrolactone [3123-97-5] is obtained in high yield by electrochem. redn. of an acrylic acid ester such as Me acrylate 1.5 wt.% and acetone 0.5-20 wt.% in presence of 1-3 wt.% of a phosphate supporting electrolyte at pH 6-9 in a cell with a Pb, Pb alloy or Cd cathode and an Fe, Fe alloy or Pb alloy anode.

3-Methyl-2-cyclopentenones: 3-Methyl-2-cyclopentenones. (Asahi Chemical Industry Co., Ltd., Japan). Jpn. Kokai Tokkyo Koho JP 58162548 A2 27 Sep 1983 Showa, 5 pp. (Japanese). (Japan). CODEN: JKXXAF. CLASS: IC: C07C049-597; C07C045-59. ICA: B01J027-16. APPLICATION: JP 82-42792 19 Mar 1982.Several substances with their cas registry numbers 3123-97-5 and 2758-18-1 may be metioned in this study. DOCUMENT TYPE: Patent CA Section: 24 (Alicyclic Compounds) In the dehydrative condensation of methyl lactones I (R = H, alkyl) to prep. 3-methyl-2-cyclopentenones (II), the H2O formed in the reaction was removed by refluxing in a water-insol. solvent (arom. hydrocarbon) with H3PO4 or condensed phosphoric acids at 150-230°. Thus, 450 g 85% H3PO4 was refluxed with mesitylene to remove 82.5 g H2O, and then refluxed with 90 g I (R = H) at 165° to give 94.3% II (R = H) with 22.9% conversion of I (R = H). .