Ethyl (E,Z)-2,4-decadienoate
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Ethyl (E,Z)-2,4-decadienoate
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CAS No:
3025-30-7
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Formula:
C12H20O2
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Chemical Name:
Ethyl (E,Z)-2,4-decadienoate
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Synonyms:
2,4-Decadienoic acid,ethyl ester,(2E,4Z)-;2,4-Decadienoic acid,ethyl ester,(E,Z)-;Ethyl trans-2,cis-4-decadienoate;Ethyl (2E,4Z)-decadienoate;Ethyl (E,Z)-2,4-decadienoate;Ethyl (2E,4Z)-2,4-decadienoate;Pear ester
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CAS No:
Description
clear colorless to yellowish liquid Ethyl (2E,4Z)-2,4-Decadienoate has been identified in pears and has the typical aroma of Williams pears. Synthesis of ethyl (2E,4Z)-2,4-decadienoate starts from (Z)-1-heptenyl bromide, which is converted into a 1-heptenyllithium cuprate complex with lithium and copper iodide. Reaction with ethyl propiolate yields a mixture of 95% ethyl (2E,4Z)- and 5% ethyl (2E,4E)-2,4-decadienoate. Pure ethyl (2E,4Z)-2,4-decadienoate is obtained by fractional distillation. A
Characteristics
26.30000
3.24220
0.905 g/mL at 25 °C(lit.)
-60 °C
81-82 °C @ Press: 0.1 Torr
>230 °F
n20/D 1.486(lit.)
2-8°C
LD50 oral in rat: > 5gm/kg
Ethyl (E,Z)-2,4-decadienoate Use and Manufacturing
Synthesized by lithium vinyl copper oxide.
GB 2760-1996 stipulates the food spice for temporary use.
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