Regiospecific Normal Diels–Alder Reaction of trans-1, 2-Biscoumarinylethenes
KK Sanap, SD Samant
Index: Sanap, Kailas K.; Samant, Shriniwas D. Synlett, 2012 , vol. 23, # 15 p. 2189 - 2194
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Citation Number: 4
Abstract
Abstract The reaction of different 7, 8-substituted coumarin 4-acetic acids with 7- diethylaminocoumarin-3-carbaldehyde in the presence of piperidine in methanol gives 1, 2- biscoumarinylethenes. These compounds undergo regiospecific Diels–Alder reactions at their electron-rich diene components C 3–C 4–C 10–C 9, with electron-deficient dienophiles. The feasibility of normal electron-demand Diels–Alder reactions could be ...
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