SYNTHESIS AND CATIONIC RING-OPENING POLYMERIZATION OF 1, 4-ANHYDRO-2, 3-DI-O-(P-AZIDOBENZYL)-α-D-RIBOPYRANOSE

Your Location：

Home >

Browse articles >

SYNTHESIS AND CATIONIC RING-OPENING POLYMERIZATION OF 1, 4-ANHYDRO-2, 3-DI-O-(P-AZIDOBENZYL)-α-D-RIBOPYRANOSE

Papers | Updated：2021-06-21

- SYNTHESIS AND CATIONIC RING-OPENING POLYMERIZATION OF 1, 4-ANHYDRO-2, 3-DI-O-(P-AZIDOBENZYL)-α-D-RIBOPYRANOSE
- Vol. 17, Issue 2, Pages: 123-128(1999)
- Affiliations：
- Author bio：
- Funds：
- DOI：
  CLC：
- Published：20 April 1999
- Accepted：
Scan QR Code
SYNTHESIS AND CATIONIC RING-OPENING POLYMERIZATION OF 1, 4-ANHYDRO-2, 3-DI-O-(P-AZIDOBENZYL)-α-D-RIBOPYRANOSE[J]. 1999, 17(2): 123-128.
DOI：

SYNTHESIS AND CATIONIC RING-OPENING POLYMERIZATION OF 1, 4-ANHYDRO-2, 3-DI-O-(P-AZIDOBENZYL)-α-D-RIBOPYRANOSE[J]. 1999, 17(2): 123-128. DOI：

摘要

New highly stereoregular 2

3 -di- O-(p-azidobenzyl )-(1 →5 ) - α-D -ribofuranan was synthesized byselective ring-opening polymerization of 1

4-anhydro-2

3 - di-O -(p-azidobenzyl )-α-D -ribopyranose(ADABR) using phosphorus pentafluoride or tin tetrachloride as catalyst at low temperature indichloromethane. The monomer was obtained by the reaction of p - bromomethyl -phenyleneazide with 1

4 -anhydro-α-D-ribose in DMF. The structure of poly(ADANR) was identified by specific rotation and 13C-NMR spectroscopy.Acid chloride-AgCl4 complex catalyst such as CH2=C(CH3)C+OClO4- used in the polymerization resulted in polymers with mixed stryctures

i.e.(1→5)-α-D-ribofuranosidic and (1→4)-β-D-ribopyranosidic units.However

with C6H5C+OClO4- as catalyst

pure(1→5)-α-D-ribofuranan was obtained.The effects of catalyst

polymerization temperature and time on polymer stereoregularity were examined

and the mechanism of the ring-opning polymerization was discussed.

Abstract

New highly stereoregular 2

3 -di- O-(p-azidobenzyl )-(1 →5 ) - α-D -ribofuranan was synthesized byselective ring-opening polymerization of 1

4-anhydro-2

i.e.(1→5)-α-D-ribofuranosidic and (1→4)-β-D-ribopyranosidic units.However

with C6H5C+OClO4- as catalyst

pure(1→5)-α-D-ribofuranan was obtained.The effects of catalyst

polymerization temperature and time on polymer stereoregularity were examined

and the mechanism of the ring-opning polymerization was discussed.

关键词

Keywords

references

Views

Downloads

CSCD

Alert me when the article has been cited

Submit

Tools

Publicity Resources

pH-Responsive L-Cysteine-conjugated Polydopamine Nanocarriers for Controlled Release of Emamectin Benzoate against Pieris brassicae

Improvements of Hydrophobicity and Toughness of Epoxy Coatings Modified with Hydroxyl-terminated Fluororubber

Pyrimidoisoindigo-based Polymers for Ambipolar Charge Transport

End-group and Side-chain Dual-engineering of Selenium-fused Acceptors for 20.08% Efficiency Polymer Solar Cells with Low Energy Loss

Sequence-encoded Conformation Pathways in Viscoelastic Microphase Separation of Multiblock Copolymers

Related Author

No data

Related Institution

No data

⁰