dc.contributor.author |
Burilov V. |
|
dc.contributor.author |
Garipova R. |
|
dc.contributor.author |
Mironova D. |
|
dc.contributor.author |
Sultanova E. |
|
dc.contributor.author |
Bogdanov I. |
|
dc.contributor.author |
Ocherednyuk E. |
|
dc.contributor.author |
Evtugyn V. |
|
dc.contributor.author |
Osin Y. |
|
dc.contributor.author |
Rizvanov I. |
|
dc.contributor.author |
Solovieva S. |
|
dc.contributor.author |
Antipin I. |
|
dc.date.accessioned |
2021-02-25T20:54:55Z |
|
dc.date.available |
2021-02-25T20:54:55Z |
|
dc.date.issued |
2020 |
|
dc.identifier.uri |
https://dspace.kpfu.ru/xmlui/handle/net/162603 |
|
dc.description.abstract |
© The Royal Society of Chemistry 2020. A new imidazolium amphiphilic calix[4]arene with terminal acetylene fragments in the polar region was synthesized according to a two step scheme including regioselective chloromethylation of distal di-O-butyl calix[4]arene and subsequent interaction with 1-(hex-5-yn-1-yl)-1H-imidazole. The aggregation properties (CAC, the size and zeta potential of aggregates) of alkynyl calix[4]arene as well as of previously synthesized azidopropyl calix[4]arene and their 1 : 1 mixture were disclosed. Macrocycles with azide and alkyne fragments in the polar region were covalently cross-linked under CuAAC conditions in water. Successful cross-linking of molecules has been proven by IR spectroscopy and MALDI-TOF spectrometry. The obtained polymeric particles were studied both in solution and the solid state and the presence of submicron (∼200 nm) and micron (∼1-5 μm) particles with the prevalence of the latter was found. The average molecular weight of the polymer according to the static light scattering data was found to be 639 ± 44 kDa. The obtained polymeric imidazolium-triazole particles were tested as a support for Pd(OAc)2in the Mizoroki-Heck reaction carried out in both organic and water media. In both solvents (especially in water) the addition of imidazolium-triazole particles to Pd(OAc)2increased the conversion of 4-iodanisole. It was found that the ratio between the products (1,1 and 1,2-substituted ethylenes) changes drastically on going from DMF to water from 1 : 5 to 1 : 40 when using supported Pd(OAc)2 |
|
dc.title |
New poly-imidazolium-triazole particles by CuAAC cross-linking of calix[4]arene bis-azide/alkyne amphiphiles - a prospective support for Pd in the Mizoroki-Heck reaction |
|
dc.type |
Article |
|
dc.relation.ispartofseries-issue |
1 |
|
dc.relation.ispartofseries-volume |
11 |
|
dc.collection |
Публикации сотрудников КФУ |
|
dc.relation.startpage |
584 |
|
dc.source.id |
SCOPUS-2020-11-1-SID85100429728 |
|