Cited by 176biodegradable polymer synthesis and propertiesPolymer crystallization and propertiesChemical Reaction Mechanisms

Why δ-Valerolactone Polymerizes and γ-Butyrolactone Does Not

Houk, K. N., Jabbari, Arash, Hall, H. K., Alemán, Carlos·2008·The Journal of Organic Chemistry

Abstract

gamma-Butyrolactone, unlike delta-valerolactone, does not polymerize despite a strain energy of approximately 8 kcal mol-1 which could be relieved by opening the s-cis lactone ester bond to an s-trans ester bond in the polymer. To explain this anomaly, we have applied quantum mechanical methods to study the thermochemistry involved in the ring-opening reactions of gamma-butyrolactone and delta-valerolactone, the conformational preferences of model molecules that mimic their corresponding homopolyesters, and the variation of enthalpy associated to the polymerizability of such two cyclic lactones. The overall results indicate that the lack of polymerizability of gamma-butyrolactone should be attributed to the low strain of the ring, which shows much less geometric distortion in the ester group than delta-valerolactone, and the notable stability of the coiled conformations found in model compounds of poly-4-hydroxybutyrate.

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Crossref · 10.1021/jo702567v

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  • β-Propiolactone is nearly incapable of polymerization under typical conditions.

    “Indeed, the former is nearly incapable of polymerization under typical conditions.”

    From Aliphatic Polyester Block Polymer Design (2016) · cites this paper as [31]

  • Four-, six-, and seven-membered rings are favorable for ROP due to their large ring strains, while five-membered lactones such as γ-butyrolactone exhibit a less favorable enthalpy of polymerization and are usually considered nonpolymerizable.

    “Four-, six-, and seven-membered rings are favorable for ROP due to their large ring strains while five-membered lactones such as γ-butyrolactone (γ-BL) exhibits a less favorable enthalpy of polymerization and is usually considered as nonpolymerizable.277”

    From Catalysis as an Enabling Science for Sustainable Polymers (2018) · cites this paper as [277]

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Authors
Houk, K. N., Jabbari, A., Hall, H. K., & Alemán, C.
Affiliations
University of Arizona (US)
Venue
The Journal of Organic Chemistry
Published
2008-03-07
Volume
73
Issue
7
Pages
2674-2678
ISSN
  • 0022-3263 (ISSN-L)
  • 1520-6904
OpenAlex
W2333397163
Cited by
176
References
55
Citations by year
2026: 3 · 2025: 6 · 2024: 14 · 2023: 12 · 2022: 15 · 2021: 15 · 2020: 12 · 2019: 13 · 2018: 17 · 2017: 12 · 2016: 12 · 2015: 7 · 2014: 12 · 2013: 6 · 2012: 6
FWCI
2.01
Type
journal article
Language
en
Open access
closed
Locations
  • The Journal of Organic Chemistry (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Physical Sciences › Materials Science › Biomaterials › biodegradable polymer synthesis and properties
  • Physical Sciences › Materials Science › Polymers and Plastics › Polymer crystallization and properties
  • Physical Sciences › Chemistry › Organic Chemistry › Chemical Reaction Mechanisms
Keywords
δ-valerolactone, gamma-butyrolactone, ring-opening polymerization, cyclic lactones, strain energy, conformational analysis, poly-4-hydroxybutyrate, polymerizability
MeSH terms
Esters, Models, Chemical, Pyrones, Quantum Theory, Thermodynamics, 4-Butyrolactone, Molecular Structure

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