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

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Names

[ CAS No. ]:
3385-34-0

[ 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

  • Ethyl acetoacetate
  • Ethyl 2,3-Butadienoate
  • malonoyl chloride
  • Ethyl iodide
  • sodium acetyl acetic acid ethyl ester
  • E-Ethyl β-chlorocrotonate
  • Sulfuric acid
  • benzene

DownStream

  • Methyl isodehydracetate
  • 2H-Pyran-5-carboxylicacid, 4,6-dimethyl-2-oxo-
  • trans-3-methylenecyclopropane-1,2-dicarboxylic acid
  • Chrysophanic acid
  • 2H-Pyran-5-carboxylicacid, 3-bromo-4,6-dimethyl-2-oxo-, ethyl ester
  • (8-acetyloxy-3-methyl-9,10-dioxo-anthracen-1-yl) acetate
  • 3,3-Dimethylacrylic acid
  • 2,4-Dimethyl-6-oxo-1,6-dihydro-3-pyridinecarboxylic acid

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...


More Articles

Related Compounds

  • 3-Bromo-5-carbethoxy-4,6-dimethyl-2-pyrone
  • 5-(4,6-dimethyl-2,3-dihydro-1H-inden-5-yl)cyclohexane-1,3-dione
  • 2-MERCAPTO-4,6-DIMETHYLNICOTINIC ACID
  • 5-fluoro-4,6-dimethyl-2,3-dihydro-1H-indene
  • 5-chloro-4,6-dimethyl-2,3-dihydro-1H-indene
  • 5-aminoacetamido-4,6-dimethyl-2-hydroxyisophthalic acid diethyl ester
  • 1-(4,5,6,7-Tetrahydro-1-benzothiophen-2-yl)ethane-1-thiol
  • 2-(2-Methanesulfonylethyl)azetidine
  • 3,7-Bis(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-10H-phenothiazine
  • 5-Thiazolecarboxylic acid, 2-iodo-4-(1-methylethyl)-, ethyl ester
  • 1,3-Dioxolan-2-one, 4-[(4-ethenylphenoxy)methyl]-
  • 4-(3-Iodo-4-methylphenyl)morpholin-3-one
  • 1H-Pyrrole-3-carboxylic acid, 2-(4-methylphenyl)-, methyl ester
  • 2-methyl-3-(4-methyl-1H-imidazol-5-yl)propanoic acid
  • 3-Bromo-2-(3-(trifluoromethyl)phenyl)-5,6-dihydro-4H-pyrrolo[1,2-b]pyrazole
  • (5-Bromo-2-(methoxymethoxy)phenyl)boronic acid
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