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The preferred conformation of cis-1,4-dihydro-4-tritylbiphenyl: A flexible cyclohexa-1,4-diene

โœ Scribed by M.C. Grossel; A.K. Cheetham; D.A.O. Hope; K.P. Lam; M.J. Perkins


Book ID
108384780
Publisher
Elsevier Science
Year
1979
Tongue
French
Weight
109 KB
Volume
20
Category
Article
ISSN
0040-4039

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An improved protocol for the Prins desym
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Improved conditions are reported for the Prins-pinacol rearrangement of cyclohexa-1,4-diene-derived acetals. The use of triflic acid gives particularly clean reaction, resulting in a mixture of regioisomers in an approximately 10:1 ratio. A tethered version of this reaction is also reported, giving