Chiral Bimetallic Boronic Esters: A Donor–Acceptor Coexisting Receptor for Amines

A chiral bimetallic Lewis acid, 2,2′-(1,2-phenylene)bis[(4R,5R)-4,5-diphenyl-1,3,2-ioxaborolane] (1a), has been synthesized. The exceptionally strong binding of 1a with benzylamine was demonstrated by titrations. The complex formation ratio of 1a : amine = 1 : 2 was determined by a Job plot. The bin...

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Veröffentlicht in:Bulletin of the Chemical Society of Japan 1996-07, Vol.69 (7), p.2043-2052
Hauptverfasser: Nozaki, Kyoko, Yoshida, Masanori, Takaya, Hidemasa
Format: Artikel
Sprache:eng
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Zusammenfassung:A chiral bimetallic Lewis acid, 2,2′-(1,2-phenylene)bis[(4R,5R)-4,5-diphenyl-1,3,2-ioxaborolane] (1a), has been synthesized. The exceptionally strong binding of 1a with benzylamine was demonstrated by titrations. The complex formation ratio of 1a : amine = 1 : 2 was determined by a Job plot. The binding constants, K1 and K2, were determined by non-linear curve fitting to be K1
ISSN:0009-2673
1348-0634
DOI:10.1246/bcsj.69.2043