CAS No.21835-01-8,2-Cyclopenten-1-one, 3-ethyl-2-hydroxy- Suppliers

Detail of "21835-01-8"

CAS Number:

21835-01-8

Name:

2-Cyclopenten-1-one, 3-ethyl-2-hydroxy-

Superlist Name:

3-Ethyl-2-hydroxy-2-cyclopenten-1-one

Molecular Structure:

Formula:

C₇H₁₀O₂

Molecular Weight:

126.15

Synonyms:

2-Cyclopenten-1-one,3-ethyl-2-hydroxy-;2-Hydroxy-3-ethyl-2-cyclopenten-1-one;2-Hydroxy-3-ethyl-2-cyclopentenone;3-Ethyl-2-cyclopenten-2-ol-1-one;Ethylcyclotene;

EINECS:

244-606-5

Density:

1.156 g/cm³

Boiling Point:

258.3 °C at 760 mmHg

Flash Point:

107.2 °C

Hazard Symbols:

Risk Codes:

20/22

Safety:

26-36 Details

Reference

Cyclopentenone derivatives: Cyclopentenone derivatives. Ito, Shota; Asano, Takashi (Agency of Industrial Sciences and Technology, Japan). Japan. Kokai JP 51098245 30 Aug 1976 Showa, 4 pp. (Japanese). (Japan). CODEN: JKXXAF. CLASS: IC: C07C049-58. APPLICATION: JP 75-22581 24 Feb 1975. DOCUMENT TYPE: Patent CA Section: 24 (Alicyclic Compounds) Section cross-reference(s): 62 Cyclopentenone derivs. I (R = alkyl) were prepd. by treating II (R1 = alkyl, aralkyl) with RI in the presence of MeCN and alkali metal carbonates, followed by heating the resulting III in AcOH-HCl.Several substances with their cas registry numbers 21835-01-8 and 80-71-7 may be metioned in this study. I are useful in perfumes (no data). Thus, a mixt. of II (R1 = Et) 24.2, K2CO3 55, and MeI 40 g in MeCN was refluxed 6 hr to give 81% III (R = Me, R1 = Et) (IV). Reflux of 13.5 g IV in AcOH-HCl (1:1) 3 hr gave 80% I (R = Me). I (R = Et) was prepd. analogously in 72% yield. .

2-Hydroxy-3-alkyl-2-cyclopenten-1-ones: 2-Hydroxy-3-alkyl-2-cyclopenten-1-ones. (Sanyo Chemical Industries, Ltd., Japan). Jpn. Kokai Tokkyo Koho JP 58210041 A2 7 Dec 1983 Showa, 7 pp. (Japanese). (Japan). CODEN: JKXXAF. CLASS: IC: C07C049-707; C07C045-64. ICA: C07C097-10. APPLICATION: JP 82-95221 2 Jun 1982. DOCUMENT TYPE: Patent CA Section: 24 (Alicyclic Compounds) Title compds. I (R = Me, Et) were prepd. by ring opening of II in the presence of acid, cyclization of the resulting Me2NCH2COCH2CH2COR (III) in the presence of alkali, and hydrolysis of the resulting IV. Thus, addn. 89450-48-6 and 21835-01-8 which are cas registry numbers are also used here. of 20 g II (R = Me) to 105 g 10% aq. HCl and refluxing 2 h gave 91.5% III (R = Me). This (20 g) was stirred with 20 g 2% aq. NaOH 2 h at room temp. to give 9.3% IV (R = Me). Refluxing this (20 g) with 58.3 g 10% aq. HCl 2 h gave 97.5% I (R = Me). .

Detail of "21835-01-8"

2-Cyclopenten-1-one, 3-ethyl-2-hydroxy-

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CAS No.21835-01-8 3-Ethyl-2-hydroxy-2-cyclopenten-1-one

CAS No.21835-01-8 3-Ethyl-2-hydroxy-2-cyclopenten-1-one

CAS No.21835-01-8 3-Ethyl-2-hydroxy-2-cyclopenten-1-one

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CAS No.21835-01-8 3-Ethyl-2-hydroxy-2-cyclopenten-1-one

CAS No.21835-01-8 3-Ethyl-2-hydroxy-2-cyclopenten-1-one

CAS No.21835-01-8 3-Ethyl-2-hydroxy-2-cyclopenten-1-one

CAS No.21835-01-8 3-Ethyl-2-hydroxy-2-cyclopenten-1-one

CAS No.21835-01-8 3-Ethyl-2-hydroxy-2-cyclopenten-1-one

CAS No.21835-01-8 3-Ethyl-2-hydroxy-2-cyclopenten-1-one

CAS No.21835-01-8 3-Ethyl-2-hydroxy-2-cyclopenten-1-one

Reference