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Cyclobutanone formation via in situ generated vinyl ketene complexes of chromium

✍ Scribed by Wulff, William D.; Kaesler, Ralph W.

Book ID
126414638
Publisher
American Chemical Society
Year
1985
Tongue
English
Weight
424 KB
Volume
4
Category
Article
ISSN
0276-7333

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On the Claisen Rearrangement of Allyl Et
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## Abstract Mixed acetals 7 of benzeneseleninylacetaldehyde, prepared by a simple 2‐step procedure from mono‐ and bicyclic allylic alcohols **5**, undergo benzeneselenenic acid elimination to transient ketene acetals **8** which afford Ξ³, δ‐unsaturated esters **9** __via__ the ester __Claisen__ rea