Self-Assembly of 3-[4'-(Diethylboryl) phenyl] pyridine and 3-[3'-(Diethylboryl) phenyl] pyridine: Synthesis, Structural Features, and Stability in Solution

S Wakabayashi, Y Sugihara, K Takakura…

Index: Wakabayashi, Shigeharu; Sugihara, Yoshikazu; Takakura, Katsuto; Murata, Shigeru; Tomioka, Hideo; Ohnishi, Shiho; Tatsumi, Kazuyuki Journal of Organic Chemistry, 1999 , vol. 64, # 19 p. 6999 - 7008

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Citation Number: 12

Abstract

The self-assembly of 3-[4'-(diethylboryl) phenyl] pyridine (3) and 3-[3'-(diethylboryl) phenyl] pyridine (4) was investigated by 1H and 11B NMR spectroscopies and vapor pressure osmometry. It can be seen that in solution 3 affords an equilibrium mixture of oligomers including a cyclic trimer as a major component via intermolecular boron-nitrogen coordination bonds, which is supported by temperature-, concentration-, and solvent- ...