Optically active polymerization catalyst and synthesis of optically active polymer

Abstract

Abstract PURPOSE:Polymerization of a monomer is conducted using an optically active catalyst which is composed of an anionic initiator of a specific organoalkali metal compound and asymmetric ligands such as (+)-sparteine to produce optically active macromolecules of a high specific rotation with a polymerization degree readily controlled. CONSTITUTION:An optically active polymerization catalyst which is composed of an anionic initiator of the formula: RX (X is alkali metal; R is 1-50C hydrocarbon whose conjugate acid RH has 20-25 pKa in ether) such as fluorenyl lithium and asymmetric ligands of (-)- or (+)-sparteine is used to effect polymerization of a monomer such as triphenylmethyl methacrylate to give an optically active macromolecule with high specific rotation.

Inventors

• 👤 Yoshio Okamoto
• 👤 佳男 岡本
• 👤 Koichi Hatada
• 👤 畑田　耕一

Bibliographic Details