Novel Deconjugative Esterification of 2-Cyclohexylideneacetic Acids through 4-(Pyrrolidin-1-yl)pyridine-catalyzed Carbodiimide Couplings

Novel Deconjugative Esterification of 2-Cyclohexylideneacetic Acids through 4-(Pyrrolidin-1-yl)pyridine-catalyzed Carbodiimide Couplings

4-(Pyrrolidin-1-yl)pyridine-catalyzed deconjugative esterification of 2-cyclohexylideneacetic acids afforded isopropyl 2-(cyclohex-1-enyl)acetate by employing 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide hydrochloride as a coupling reagent. On the other hand, 4-(pyrrolidin-1-yl)pyridine-catalyzed e...

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Veröffentlicht in:Chemistry letters 2006-11, Vol.35 (11), p.1286-1287
Hauptverfasser: Sano, Shigeki, Harada, Etsuko, Azetsu, Tomohiro, Ichikawa, Takashi, Nakao, Michiyasu, Nagao, Yoshimitsu
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container_end_page 1287
container_issue 11
container_start_page 1286
container_title Chemistry letters
container_volume 35
creator Sano, Shigeki
Harada, Etsuko
Azetsu, Tomohiro
Ichikawa, Takashi
Nakao, Michiyasu
Nagao, Yoshimitsu
description 4-(Pyrrolidin-1-yl)pyridine-catalyzed deconjugative esterification of 2-cyclohexylideneacetic acids afforded isopropyl 2-(cyclohex-1-enyl)acetate by employing 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide hydrochloride as a coupling reagent. On the other hand, 4-(pyrrolidin-1-yl)pyridine-catalyzed esterification with 1,3-dicyclohexylcarbodiimide was not accompanied by deconjugation and gave isopropyl 2-cyclohexylideneacetate.
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title Novel Deconjugative Esterification of 2-Cyclohexylideneacetic Acids through 4-(Pyrrolidin-1-yl)pyridine-catalyzed Carbodiimide Couplings
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