1,1‘-Binaphthyl Dimers, Oligomers, and Polymers:  Molecular Recognition, Asymmetric Catalysis, and New Materials

Abstract

† Dedicated to Professor William von Eggers Doering at Harvard University for his generous contribution to the Chemistry Graduate Program (CGP) of P. R. China.

Chiral Cu(II) salen complexes catalyzed aerobic oxidative biaryl coupling-probing the reaction by EPR

“…The reaction mixture was stirred for 6 h at ambient temperature then maintained at 5 ο C. The compound formed was filtered and washed by dichloromethane (20 …”

“…Use of oxygen present in air as oxidizing agent is gaining attention by being abundant and cost effective [19]. Enantioselective oxidative coupling of 2-naphthol is an important oxidation reaction in asymmetric synthesis [20][21][22]. Enantioselective oxidative coupling of 2-naphthol using chiral copper amine complexes has been attempted by several research groups [23][24][25].…”

BINOLs modified at 3, 3′-positions: chemists’ preferred choice in asymmetric catalysis

“…[3][4][5][6][7][8][9][10][11] In a word, BINOL derivatives have played a very important role in asymmetric catalysis, and have attracted a great deal of interest. [10][11][12][13] On the other hand, only a limited number of reactions are induced by BINOL derivatives due to their lower Brønsted acidity.…”

Synthesis of a series of soluble main-chain chiral nonracemic poly(alkyl-aryl ketone)

“…In order to achieve such goals materials must be stable and possess functional groups. Considerable attention has been focused on the synthesis of optically active polymers with chirality in the main-chain because the polymers typically exist or have the tendency to form helical and rigid-rod configuration, which offers enhanced capability in chiral applications [5][6][7][8]. Although it has constantly been great synthetic challenges in constructing mainchain chiral polymers, there are a number of strategies developed to build chirality into the polymer backbones.…”