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α,β-Unsaturated Carbonyl Compounds with Sterically Protected Carbonyl Groups—Enforced a3versus a1 Reactivity

✍ Scribed by Prof. Dr. Dieter Seebach; Dipl.-Chem. Rita Locher


Book ID
101550741
Publisher
John Wiley and Sons
Year
1979
Tongue
English
Weight
207 KB
Volume
18
Category
Article
ISSN
0044-8249

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## Abstract The reaction of 5,7‐diphenyl‐4,7‐dihydro‐1,2,4‐triazolo[1,5‐__a__]pyrimidine (**1**) with α,β‐unsaturated carbonyl compounds **2a‐f** led to the formation of the alkylated heterocycles **3a‐f** (Figure 1). However, the reaction of 5‐methyl‐7‐phenyl‐4,7‐dihydro‐1,2,4‐triazolo[1,5‐__a__]p