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Updated: Jul 17, 2025

Facile Protocol for the Synthesis of Self-assembling Polyamine-based Peptide Amphiphiles PPAs and Related Biomaterials
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Published on: June 25, 2018

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多元组分合成的多氨基氨酸化物和随后的脱聚合

Jan-Willem Lamberink-Ilupeju1, Mathew J Willans1, Joe B Gilroy1

  • 1Department of Chemistry, The University of Western Ontario, London, Ontario N6A 587, Canada.

Inorganic chemistry
|September 7, 2023
PubMed
概括

新的聚合物,poly ((α-aminophosphine chalcogenide) 通过聚合,从初级素,二胺和素中合成. 这些聚合物可以通过减少条件和易斯酸完全降解聚合回原材料.

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Synthesis of Information-bearing Peptoids and their Sequence-directed Dynamic Covalent Self-assembly09:34

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Preparation of 1° Amines: Gabriel Synthesis01:28

Preparation of 1° Amines: Gabriel Synthesis

Direct alkylation is not a suitable method for synthesizing amines because it produces polyalkylated products. Gabriel synthesis is the most preferred method to exclusively make primary amines. The method uses phthalimide, which contains a protected form of nitrogen that participates in alkylation only once to predominantly give primary amines.
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Step-growth or condensation polymerization is a stepwise reaction of bi or multifunctional monomers to form long-chain polymers. As all the monomers are reactive, most of the monomers are consumed at the early stages of the reaction to form small chains of reactive oligomers, which then combine to form long polymer chains in the late stages. Hence, the reaction has to proceed for a long time to achieve high molecular weight polymers.
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The polymerization process that involves carbanion as an intermediate is called anionic polymerization. It is also a type of addition or chain-growth polymerization. Anionic polymerization gets initiated by a strong nucleophile such as an organolithium or a Grignard reagent. The most commonly used initiator for anionic polymerization is butyl lithium. Monomers involved in anionic polymerization must possess a vinyl group bonded to one or two electron-withdrawing groups. For instance,...
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The cationic polymerization mechanism consists of three steps: initiation, propagation, and termination. In the initiation step of the polymerization process, the π bond of a monomer gets protonated by the Lewis acid catalyst, which is formed from boron trifluoride and water. The protonation of the π bond generates a carbocation stabilized by the electron‐donating group. In the propagation step, the π bond of the second monomer acts as a nucleophile and attacks the...
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