Amine-Catalyzed Chain Polymerization of Ethyl Glyoxylate from Alcohol and Thiol Initiators

Hewitt David R. O.; Grubbs Robert B.

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Amine-Catalyzed Chain Polymerization of Ethyl Glyoxylate from Alcohol and Thiol Initiators

机译：醇和硫醇引发剂的胺催化链聚合乙基乙二氧硅酸酯

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Polyacetals have significant potential as degradable polymers, but aldehyde polymerizations are generally difficult to control. Here we show that polymerization of ethyl glyoxylate can be initiated from alcohols or thiols by activation with triethylamine to afford poly(ethyl glyoxylate) with controllable molecular weights and relatively low dispersities (D = 1.3-1.4), as evidenced by MALDI-TOF mass spectrometry. Stabilization against depolymerization by chain-capping with benzyl chloroformate was found to proceed without side reactions observed from chain-capping with tolyl isocyanate. The use of the stronger base DBU leads to competing side reactions that limit polymer molecular weight.

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《ACS Macro Letters》 |2021年第3期|共5页
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Hewitt David R. O.; Grubbs Robert B.;
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SUNY Stony Brook Dept Chem Stony Brook NY 11794 USA;

SUNY Stony Brook Dept Chem Stony Brook NY 11794 USA;

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正文语种 eng
中图分类有机化学;
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Amine-Catalyzed Chain Polymerization of Ethyl Glyoxylate from Alcohol and Thiol Initiators

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