Introduction：Basic information about Ethyl chrysanthemumate CAS 97-41-6, including its chemical name, molecular formula, synonyms, physicochemical properties, and safety information, etc.
Ethyl chrysanthemumate Basic information
| Product Name: | Ethyl chrysanthemumate |
| Synonyms: | (1R,3S)-2,2-dimethyl-3-(2-methylprop-1-enyl)-1-cyclopropanecarboxylic acid ethyl ester;2,2-DIMETHYL-3-(2-METHYL-1-PROPENYL)CYCLOPROPANE CARBOXYLIC ACID ETHYL ESTER;2,2-DIMETHYL-3-(1-ISOBUTENYL)CYCLOPROPANE-1-CARBOXYLIC ACID ETHYL ESTER;ethyl 2,2-dimethyl-3-(2-methylpropenyl)cyclopropanecarboxylate;CHRYSANTHEMUM MONOCARBOXYLIC ACID ETHYL ESTER;CHRYSANTHEMYLMONOCARBOXYLIC ACID ETHYL ESTER;ETHYL CHRYSANTHEMATE;ETHYL CHRYSANTHEMUMATE |
| CAS: | 97-41-6 |
| MF: | C12H20O2 |
| MW: | 196.29 |
| EINECS: | 202-579-7 |
| Product Categories: | Cyclopropanes;Simple 3-Membered Ring Compounds;Pharmaceutical Intermediates;3 |
| Mol File: | 97-41-6.mol |
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Ethyl chrysanthemumate Chemical Properties
| Boiling point | 112 °C10 mm Hg(lit.) |
| density | 0.906 g/mL at 25 °C(lit.) |
| refractive index | n20/D 1.461(lit.) |
| Fp | 184 °F |
| storage temp. | 2-8°C |
| solubility | Chloroform (Slightly), Methanol (Slightly) |
| form | Liquid |
| color | Yellow |
| Odor | at 10.00 % in dipropylene glycol. herbal wine fruity everlasting flower chrysanthemum sweet |
| Odor Type | herbal |
| BRN | 2045740 |
| LogP | 4.181 (est) |
| CAS DataBase Reference | 97-41-6(CAS DataBase Reference) |
| NIST Chemistry Reference | Ethyl chrysanthemate(97-41-6) |
| EPA Substance Registry System | Cyclopropanecarboxylic acid, 2,2-dimethyl-3-(2-methyl-1-propenyl)-, ethyl ester (97-41-6) |
Safety Information
| Safety Statements | 24/25 |
| RIDADR | UN1993 |
| WGK Germany | 2 |
| RTECS | GZ1727000 |
| TSCA | TSCA listed |
| HazardClass | 3 |
| HS Code | 29162090 |
Ethyl chrysanthemumate Usage And Synthesis
| Chemical Properties | clear colorless to yellow liquid. Very slightly soluble in water, soluble inalcohol and oils. Powerful, winey-herbaccous, sweet andethereal, very pleasant odor of intriguingcomplexity, and with a powerfully liftingminty undertone. The spicy-hcrbaccous, warmand almost green-floral notes resemble certainnotes in the Jasmin complex. |
| Uses | Ethyl Chrysanthemate is an organic building block used in the synthesis of various chemical compounds, such as insecticide, Resmethrin (R144685). It is used in the preparation of trans-norchrysanthemates and trans-norpyrethrates, having insecticidal activity. |
| Synthesis Reference(s) | Tetrahedron Letters, 22, p. 1783, 1981 DOI: 10.1016/S0040-4039(01)90438-1
Synthesis, p. 600, 1976 DOI: 10.1055/s-1976-24132 |
| Purification Methods | Purify the ester by vacuum distillation. The free trans-acid has m 54o (from EtOAc), and the free cis-acid has m 113-116o (from EtOAc). The 4-nitrophenyl ester has m 44-45o (from pet ether) [Campbell & Harper J Chem Soc 283 1945, IR: Allen et al. J Org Chem 22 1291 1957]. [Beilstein 9 II 45.] |
Ethyl chrysanthemumate Preparation Products And Raw materials
| Raw materials | Ethylene glycol-->Copper-->Hydroquinone-->Methyl acetate-->methyl(±)cis，trans-2，2-dimethyl-3-(2-methyl-1-propenyl cyclopropane carboxylate)-->diazoacetic acid-->2,5-Dimethyl-2,4-hexadiene-->Ethyl diazoacetate |
| Preparation Products | Tetramethrin-->Allethrin-->2,2-Dimethyl-3-(2-methylpropyl)cyclopropanecarboxylic acid p-(methoxymethyl)benzyl ester-->2,2-DIMETHYL-3-(2-METHYLPROP-1-ENYL)CYCLOPROPANECARBOXYLIC ACID-->trans-(±)-2,2-dimethyl-3-(2-methylprop-1-enyl)cyclopropanecarboxylic acid-->PYRETHRIN 2 |
