PROCESS FOR THE PREPARATION OF 2,4,6-OCTATRIENE-1-OIC ACID AND 2,4,6-OCTATRIENE-1-OL
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United States of America Patent
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Issued Date -
Jan 26, 2012
app pub date -
Apr 16, 2010
filing date -
Apr 17, 2009
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Abandoned
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Abstract
The present invention concerns a process for synthesis of 2,4,6-octatriene-1-oic acid and 2,4,6-octatriene-1-ol, which comprises the following stages: a) reaction between 2,4-trans-hexadienal and triethyl phosphonoacetate to give ethyl 2,4,6-trans-octatrienoate; b) alkaline hydrolysis of ethyl 2,4,6-trans-octatrienoate to give the corresponding alkaline salt; c) acidification of said salt to give 2,4,6-trans-octatrienoic acid, which can be separated or can undergo the following further stages: d) reaction of the 2,4,6-trans-octatrienoic acid with ethyl chloroformiate to give the mixed anhydride formed by 2,4,6-trans-octatrienoic acid and ethyl carbonic acid; e) reduction of said mixed anhydride with sodium borohydride to give 2,4,6-trans-octatrienol; and optionally a purification stage of the end product.
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