5-Carbethoxy-4,6-dimethyl-2-pyrone

Names

[ Name ]:
5-Carbethoxy-4,6-dimethyl-2-pyrone

[Synonym ]:
Ethyl isodehydroacetate
Ethylisodehydroacetate
2H-Pyran-5-carboxylic acid,4,6-dimethyl-2-oxo-,ethyl ester
4,6-dimethyl-2-oxo-2H-pyran-5-carboxylic acid ethyl ester
Ethyl 4,6-dimethyl-2-oxo-2H-pyran-5-carboxylate
5-Carbethoxy-4,6-dimethyl-2-pyrone
(2,3-Dimethylphenoxy)acetic acid
EINECS 222-195-3
ethyl 2,4-dimethyl-6-oxo-pyran-3-carboxylate
ethyl 4,6-dimethyl-2-oxopyran-5-carboxylate
MFCD00006643
Ethyl isodehydracetate

Chemical & Physical Properties

[ Density]:
1.167 g/mL at 25 °C(lit.)

[ Boiling Point ]:
290-295 °C(lit.)

[ Melting Point ]:
17-18 °C(lit.)

[ Molecular Formula ]:
C₁₀H₁₂O₄

[ Molecular Weight ]:
196.20000

[ Flash Point ]:
>230 °F

[ Exact Mass ]:
196.07400

[ PSA ]:
56.51000

[ LogP ]:
1.43330

[ Index of Refraction ]:
n20/D 1.515(lit.)

[ Water Solubility ]:
Insoluble

MSDS

Click to get detail MSDS

Safety Information

[ Personal Protective Equipment ]:
Eyeshields;Gloves

[ Hazard Codes ]:
Xi

[ Safety Phrases ]:
S24/25

[ RIDADR ]:
NONH for all modes of transport

[ WGK Germany ]:
3

[ HS Code ]:
2932209090

Synthetic Route

Click to get detail synthetic route

Precursor & DownStream

Precursor

DownStream

Customs

[ HS Code ]: 2932209090

[ Summary ]:
2932209090. other lactones. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

Articles

A convenient preparation of the side-chain lactone ring of a withanolide precursor.

Steroids 54(3) , 313-20, (1989)

Condensation of C22 and C21 steroidal aldehydes with ethyl 4,6-dimethyl-2-oxo-2H-pyran-5-carboxylate 1 in alkaline medium, followed by decarboxylation, provides a simple route to the alpha, beta-unsat...

Related Compounds

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