SYNTHESIS OF CHIRAL BINAPHTHYL CROWN ETHERS AND THEIR USE IN ANIONIC POLYMERIZATION OF METHYL METHACRYLATE AS INITIATOR LIGANDS*

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SYNTHESIS OF CHIRAL BINAPHTHYL CROWN ETHERS AND THEIR USE IN ANIONIC POLYMERIZATION OF METHYL METHACRYLATE AS INITIATOR LIGANDS*

Papers | Updated：2021-06-21

- SYNTHESIS OF CHIRAL BINAPHTHYL CROWN ETHERS AND THEIR USE IN ANIONIC POLYMERIZATION OF METHYL METHACRYLATE AS INITIATOR LIGANDS*
- Vol. 22, Issue 1, Pages: 63-68(2004)
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- Published：20 February 2004
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SYNTHESIS OF CHIRAL BINAPHTHYL CROWN ETHERS AND THEIR USE IN ANIONIC POLYMERIZATION OF METHYL METHACRYLATE AS INITIATOR LIGANDS*[J]. 2004, 22(1): 63-68.
DOI：

SYNTHESIS OF CHIRAL BINAPHTHYL CROWN ETHERS AND THEIR USE IN ANIONIC POLYMERIZATION OF METHYL METHACRYLATE AS INITIATOR LIGANDS*[J]. 2004, 22(1): 63-68. DOI：

摘要

Some chiral binaphthyl crown ethers were synthesized. The anionic polymerization of methyl methacrylate (MMA) was carried out in the presence of t-BuOK

Ph2CHK or Ph2CHNa (RM)

and RM coordination initiator by using chiral binaphthyl crown ethers as ligands

respectively. The results showed that in the former case the PMMA obtained has mainly isotactic structure but without optical activity

while in the later case the PMMA produced predominately has syndiotactic structure also without optical activity.

Abstract

Some chiral binaphthyl crown ethers were synthesized. The anionic polymerization of methyl methacrylate (MMA) was carried out in the presence of t-BuOK

Ph2CHK or Ph2CHNa (RM)

and RM coordination initiator by using chiral binaphthyl crown ethers as ligands

respectively. The results showed that in the former case the PMMA obtained has mainly isotactic structure but without optical activity

while in the later case the PMMA produced predominately has syndiotactic structure also without optical activity.

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