STUDIES OF SOME HINDERED 2, 2′-BITHIENYLS AND 3, 3′-BRIDGED 2, 2′-BITHIENYLS WITH SPECIAL REFERENCE TO THEIR UV SPECTRA AND …

…, A Burkhardt, A Nkansah, R Shabana…

文献索引：Amer, A.; Burkhardt, A.; Nkansah, A.; Shabana, R.; Galal, A.,; et al. Phosphorus, Sulfur and Silicon and the Related Elements, 1989 , vol. 42, p. 63 - 72

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被引用次数: 24

摘要

Abstract Some hindered bithienyl derivatives have been synthesized by cross-coupling reaction of Grignard reagents using NiCl2 (dppp)(dppp= Ph2PCH2CH2CH2PPh2) or by reductive dimerization in the presence of Zn/NiCl2 (PPh3) 2. Their UV spectra and oxidation potentials are discussed in terms of their coplanarity and of the inductive effect of the substituent.