Controlled Ring-Opening Polymerization of Macrocyclic Monomers Based on the Quinone Methide Elimination Cascade Reaction was written by He, Yuxiang;Wu, Ying;Zhang, Minghui;Zhang, Yuanxing;Ding, Hao;Zhang, Ke. And the article was included in Macromolecules (Washington, DC, United States) in 2021.SDS of cas: 60463-12-9 This article mentions the following:
A controlled ring-opening polymerization (ROP) of macrocyclic monomers was developed based on the nucleophilic ring-opening mechanism for the first time. This novel ROP was designed to prepare backbone functional and sequence-defined polymers with controlled mol. weights and narrow dispersities (D < 1.1) by polymerizing the macrocycles with a quinone methide elimination-based self-immolative spacer as the “ring-opening trigger”. This ROP was initiated by an efficient nucleophilic substitution of activated carbonate with a primary amine to ring open the macrocyclic monomers. The following spontaneous 1,6-elimination-decarboxylation cascade reaction disassembled the self-immolative spacer to regenerate the primary amine end group for subsequent polymer chain propagation. The versatility of this novel ROP was demonstrated by the formation of well-defined water-soluble, backbone-degradable, and sequence-defined polyurethanes and their block copolymers. In the experiment, the researchers used many compounds, for example, 3-(Hydroxymethyl)-4-nitrophenol (cas: 60463-12-9SDS of cas: 60463-12-9).
3-(Hydroxymethyl)-4-nitrophenol (cas: 60463-12-9) belongs to alcohols. Because alcohols are easily synthesized and easily transformed into other compounds, they serve as important intermediates in organic synthesis. Alcohols may be oxidized to give ketones, aldehydes, and carboxylic acids. These functional groups are useful for further reactions. Oxidation of organic compounds generally increases the number of bonds from carbon to oxygen (or another electronegative element, such as a halogen), and it may decrease the number of bonds to hydrogen.SDS of cas: 60463-12-9
Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts