| Identification | Back Directory | [Name]
METHYL TETRAHYDRO-4-OXO-2H-THIOPYRAN-3-CARBOXYLATE | [CAS]
4160-61-6 | [Synonyms]
3-Methoxycarbonyl-4-thianone
Methyl 4-oxothiane-3-carboxylate
3-methoxycarbonyltetrahydropyran-4-one
3-Carbomethoxytetrahydro-1,4-thiapyrone
3-(Carbomethoxy)tetrahydrothiopyran-4-one
4-oxotetrahydro-2H-thiopyran-3-carboxylate
Methyl 4-oxotetrahydrothiopyran-3-carboxylate
ETHYL TETRAHYDRO-4-OXO-2H-THIOPYRAN-3-CARBOXYLATE
Methyletetrahydro-4-oxo-2H-thiopyran-3-carboxylate
METHYL TETRAHYDRO-4-OXO-2H-THIOPYRAN-3-CARBOXYLATE
methyl 4-oxo-tetrahydro-2H-thiopyran-3-carboxylate
Methyl tetrahydro-4-oxo-2H-thiopyran-3-carboxylate ,96%
4-OXO-TETRAHYDRO-THIOPYRAN-3-CARBOXYLIC ACID METHYL ESTER
2H-Thiopyran-3-carboxylic acid, tetrahydro-4-oxo-, Methyl ester
METHYL TETRAHYDRO-4-OXO-2H-THIOPYRAN-3-CARBOXYLATE ISO 9001：2015 REACH | [EINECS(EC#)]
145-852-9 | [Molecular Formula]
C7H10O3S | [MDL Number]
MFCD00203485 | [MOL File]
4160-61-6.mol | [Molecular Weight]
174.22 |
| Chemical Properties | Back Directory | [Boiling point ]
285℃ | [density ]
1.244 | [Fp ]
137℃ | [storage temp. ]
Sealed in dry,Room Temperature | [form ]
Liquid or Solid | [pka]
10.41±0.20(Predicted) | [color ]
Clear colorless to pale yellow |
| Questions And Answer | Back Directory | [Uses]
Methyl tetrahydro-4-oxo-2H-thiaran-3-carboxylic acid is a carboxylic acid ester derivative that can be used as an organic intermediate. |
| Hazard Information | Back Directory | [Chemical Properties]
Light pink liquid | [Synthesis]
General procedure for the synthesis of methyl tetrahydro-4-oxo-2H-thiopyran-3-carboxylate from dimethyl 3,3'-thiodipropionate: 2.7098 g of NaH (60%) was added to a dry 250 ml three-necked flask, followed by the addition of 40 ml of anhydrous tetrahydrofuran (THF) and stirring for 10 min at room temperature. Dimethyl 3,3'-thiodipropionate (10.1015 g) dissolved in THF was added slowly dropwise. After dropwise addition, the reaction mixture was heated to reflux for about 1 hour. The reflux was continued for 1 hour after rinsing the dropping funnel with 10 ml of THF. The reaction was stopped and cooled to room temperature. The pH of the reaction solution was adjusted to 6-7 with 2% hydrochloric acid and then extracted with dichloromethane (30 ml x 3). The organic layers were combined, washed with saturated sodium chloride solution, collected and dried over anhydrous sodium sulfate. After filtration, the solvent was removed under reduced pressure to give 7.5639 g of a yellow oily liquid product in 88.7% yield. | [References]
[1] Synthesis, 2007, # 10, p. 1584 - 1586
[2] Patent: CN104086562, 2016, B. Location in patent: Paragraph 0136; 0137
[3] Patent: CN105153190, 2017, B. Location in patent: Paragraph 0134; 0165; 0166
[4] Organic Letters, 2018, vol. 20, # 19, p. 6104 - 6107
[5] Journal of the American Chemical Society, 1997, vol. 119, # 18, p. 4285 - 4291 |
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