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Reactivity of 3,6-dimethoxy-3, 6-dimethylcyclohexa-1, 4-diene: nuclear versus benzylic nucleophilic substitution

✍ Scribed by Francisco Alonso; Isidoro Barba; Miguel Yus


Book ID
108372305
Publisher
Elsevier Science
Year
1990
Tongue
French
Weight
727 KB
Volume
46
Category
Article
ISSN
0040-4020

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Abstmct: The reaction of 3,6-dimethary-3,6-dimethylcyclohea-l.4diene (I) with an ewess of dt@wtt silyl en01 ethers derived from ketones in the presence of zinc dichloride kads to the corresponding ketones regioselectively arylated at the (I position.

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## Abstract The acid catalyzed condensation of 4,5‐diaminopyrazoles and chalcones gave the hitherto unknown 1‐benzyl‐2,4,6‐triphenyl‐2,3‐dihydropyrazolo[3,4‐__b__][1,4]diazepines derivatives. The structure of all products was supported by ir, ^1^H and ^13^C‐nmr and mass spectra.