A New Iterative Approach for the Synthesis of Oligo (phenyleneethynediyl) Derivatives and Its Application for the Preparation of Fullerene Oligo ( …
JF Nierengarten, T Gu, G Hadziioannou…
Index: Nierengarten, Jean-Francois; Gu, Tao; Hadziioannou, Georges; Tsamouras, Dimitris; Krasnikov, Victor Helvetica Chimica Acta, 2004 , vol. 87, # 11 p. 2948 - 2966
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Citation Number: 42
Abstract
Abstract Disymmetrically substituted oligo (phenyleneethynediyl)(OPE) derivatives were prepared from 2, 5-bis (octyloxy)-4-[(triisopropylsilyl) ethynyl] benzaldehyde (5) by an iterative approach using the following reaction sequence: i) Corey–Fuchs dibromoolefination, ii) treatment with an excess of lithium diisopropylamide, and iii) a metal- catalyzed cross-coupling reaction of the resulting terminal alkyne with 2, 5-diiodo-1, 4-bis ( ...
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