NMR characterization of pentaerythritol glycolysis products of polyethylene terephthalate
Sign Up to like & getrecommendations! Published in 2017 at "International Journal of Polymer Analysis and Characterization"
DOI: 10.1080/1023666x.2016.1219835
Abstract: ABSTRACT The degradation of polyethylene terephthalate (PET) bottles has been successfully achieved by depolymerization through glycolysis with pentaerythritol. The reaction was performed at 250°C in the presence of an organotin catalyst. The glycolyzed products were… read more here.
Keywords: pentaerythritol ester; polyethylene terephthalate; glycolysis; pentaerythritol ... See more keywords
Synthesis of Pentaerythritol-Based Branching Reagents for Modification of Proteins and Nucleic Acids by [2+3] Dipolar Cycloaddition Reaction
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DOI: 10.1134/s1070363218030118
Abstract: Alkylation of pentaerythritol symmetrically substituted with propylene glycol with propargyl bromide afforded compounds containing two or three alkyne moieties. Amidophosphite reagents and solid supports were prepared for the introduction of two and three acetylene fragments… read more here.
Keywords: synthesis; dipolar cycloaddition; pentaerythritol; cycloaddition reaction ... See more keywords
ɛ-caprolactone and pentaerythritol derived oligomer for rigid polyurethane foams preparation
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DOI: 10.1177/0021955x221092878
Abstract: Copolymerization of pentaerythritol with five equivalents of ɛ-caprolactone leads to tetra-functional branched oligomer terminated with hydroxyl groups. The product was characterized by elemental analysis, IR and NMR spectroscopy, gel permeation chromatography and physical methods to… read more here.
Keywords: pentaerythritol; rigid polyurethane; polyurethane foams; polyurethane ... See more keywords
Pentaerythritol: A Versatile Substrate in Organic Transformations, Centralization on the Reaction Medium.
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DOI: 10.2174/1570179415666181115102643
Abstract: BACKGROUND Pentaerythritol (2,2-bis (hydroxymethyl) propane-1,3-diol) as white crystalline odorless solid has been synthesized in 1891. Pentaerythritol is multifaceted species in many compounds, which are wildly utilized in medicine and industry. Also, multicomponent reactions (MCRs) play… read more here.
Keywords: pentaerythritol versatile; reaction medium; pentaerythritol; versatile substrate ... See more keywords