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REGIOSELECTIVE FORMATION OF β-KETOAMIDES IN THE DIBENZOCYCLOOCTANE FAMILY

✍ Scribed by Moore, J. A.; Mitchell, T. D.

Book ID
127012459
Publisher
Taylor and Francis Group
Year
1988
Tongue
English
Weight
389 KB
Volume
20
Category
Article
ISSN
0030-4948

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UV irradiation of (E,E)-arylidene-b-ionones 1 leads to photoisomerization resulting in (Z,E) arylidene-b-ionones 2, which undergo electrocyclization to 1,7,7-trimethyl-3-(E-2%-arylethenyl)-2-oxabicyclo[4.4.0]deca-3,5-dienes 3, and the latter in the excited state add regioselectively, involving only