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Potentiometric study of complexes of cyclopropane-1,1-dicarboxylic, cyclopentane-1,1-dicarboxylic and cyclohexane-1,1-dicarboxylic acids with some bivalent metal ions

✍ Scribed by Ezio Roletto; Adriano Vanni; Giorgio Ostacoli

Book ID
118909382
Publisher
Elsevier Science
Year
1972
Weight
242 KB
Volume
34
Category
Article
ISSN
0022-1902

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Formation and stability of the mixed complexes of Cuzc-2,2'-dipyridyl with cyclohexane-l,I-dicarboxylic acid have been investigated by means of potentiometric measurements of hydrogen ion concentration, at 25" C and in a medium 0.1 M (Na,H)C104. Complexes as CuDipL and CuDipL2 have been considered.

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## Abstract A novel Lewis acid‐catalyzed [3+4] annulation of 2‐(heteroaryl)cyclopropane‐1,1‐dicarboxylates with cyclopentadiene is reported. This reaction proceeds __via__ an electrophilic attack of the Lewis acid‐activated donor‐acceptor cyclopropane onto cyclopentadiene followed by Friedel–Crafts