Polymerization, Stimuli‐induced Depolymerization, and Precipitation‐driven Macrocyclization in a Nitroaldol Reaction System
Yunchuan Qi,Olof Ramström +1 more
TL;DR: In this paper , a dynamic covalent polymers of different topology have been synthesized from an aromatic dialdehyde and α,ω-dinitroalkanes via the nitroaldol reaction.
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Abstract: Abstract Dynamic covalent polymers of different topology have been synthesized from an aromatic dialdehyde and α,ω‐dinitroalkanes via the nitroaldol reaction. All dinitroalkanes yielded dynamers with the dialdehyde, where the length of the dinitroalkane chain played a vital role in determining the structure of the final products. For longer dinitroalkanes, linear dynamers were produced, where the degree of polymerization reached a plateau at higher feed concentrations. In the reactions involving 1,4‐dinitrobutane and 1,5‐dinitropentane, specific macrocycles were formed through depolymerization of the linear chains, further driven by precipitation. At lower temperature, the same systemic self‐sorting effect was also observed for the 1,6‐dinitrohexane‐based dynamers. Moreover, the dynamers showed a clear adaptive behavior, displaying depolymerization and rearrangement of the dynamer chains in response to alternative building blocks as external stimuli.
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Citations
Polymerization, Stimuli‐induced Depolymerization, and Precipitation‐driven Macrocyclization in a Nitroaldol Reaction System
Yunchuan Qi,Olof Ramström +1 more
TL;DR: In this paper , a dynamic covalent polymers of different topology have been synthesized from an aromatic dialdehyde and α,ω-dinitroalkanes via the nitroaldol reaction.
7
Self-healable, Regenerable, and Degradable Dynamic Covalent Nitroalcohol Organogels.
TL;DR: In this article , a dynamic covalent gels were synthesized from an aromatic trialdehyde and α,ω-dinitroalkanes via the nitroaldol reaction in organic solvents.
2
Spontaneous and Selective Macrocyclization in Nitroaldol Reaction Systems
Yunchuan Qi,Mubarak Ayinla,Stephen M. Clifford,Olof Ramström +3 more
- 13 Sep 2023
TL;DR: Sure, here is the TLDR in 35 words:
Spontaneous and selective macrocyclization in nitroaldol reaction systems generates lowellane macrocycles through dynamic polymerization and self-sorting processes.
2
Metal‐Free, Hindered, Regioselective Access to Multifunctional Groups Diarylamines via S<sub>N</sub>Ar Substitution of P‐Nitroso Aromatic Methyl Ether by Arylamines
Shuliang Zou,Yazhou Zhang,Qing Wu,Tianming Zhao,Yutao Li,Bing Liu,Xianguo Ma +6 more
TL;DR: Metal-free, hindered SN Ar access to multifunctional groups diarylamines from arylamines and p-nitroso aromatic methyl ether derivatives.
Self-healable, Regenerable, and Degradable Dynamic Covalent Nitroalcohol Organogels
30 Dec 2022
TL;DR: In this paper , a dynamic covalent gels were synthesized from an aromatic trialdehyde and α,ω-dinitroalkanes via the nitroaldol reaction in organic solvents.
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