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Here two new phosphazene\u2010functionalized organosilsesquioxane cage\u2010based porous polymers were synthesized successively by a Friedel\u2010Crafts reaction of hexapyrrolylcyclotriphosphazene with octavinylsilsesquioxane in the presence of AlCl<jats:sub>3<\/jats:sub> and CF<jats:sub>3<\/jats:sub>SO<jats:sub>3<\/jats:sub>H as catalysts. The nature of acid catalysts barely influenced the character of pores due to the interaction of catalysts with basic nitrogen atoms of phosphazene units. The obtained polymers exhibited high efficiency as metal\u2010free catalysts for the Knoevenagel reaction. This work opens new perspectives in the use of porous polymers based on cage\u2010like organosiloxane compounds as basic catalysts for various reactions.<\/jats:p>","DOI":"10.1002\/asia.202100444","type":"journal-article","created":{"date-parts":[[2021,5,27]],"date-time":"2021-05-27T22:14:38Z","timestamp":1622153678000},"page":"1901-1905","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":17,"title":["Preparation of Porous Polymers Based on the Building Blocks of Cyclophosphazene and Cage\u2010like Silsesquioxane and Their Use as Basic Catalysts for Knoevenagel Reactions"],"prefix":"10.1002","volume":"16","author":[{"given":"Mikhail","family":"Soldatov","sequence":"first","affiliation":[{"name":"Key Laboratory of Special Functional Aggregated Materials Ministry of Education School of Chemistry and Chemical Engineering Shandong University  Jinan 250100 P. R. China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yiqi","family":"Wang","sequence":"additional","affiliation":[{"name":"Key Laboratory of Special Functional Aggregated Materials Ministry of Education School of Chemistry and Chemical Engineering Shandong University  Jinan 250100 P. R. China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4821-5698","authenticated-orcid":false,"given":"Hongzhi","family":"Liu","sequence":"additional","affiliation":[{"name":"Key Laboratory of Special Functional Aggregated Materials Ministry of Education School of Chemistry and Chemical Engineering Shandong University  Jinan 250100 P. R. China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2021,6,10]]},"reference":[{"key":"e_1_2_2_1_1","unstructured":"\u00a0"},{"key":"e_1_2_2_2_2","doi-asserted-by":"publisher","DOI":"10.1021\/cr200440z"},{"key":"e_1_2_2_3_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.progpolymsci.2011.09.002"},{"key":"e_1_2_2_4_2","doi-asserted-by":"publisher","DOI":"10.1021\/acs.chemrev.6b00439"},{"key":"e_1_2_2_5_2","doi-asserted-by":"publisher","DOI":"10.1039\/C7CS00071E"},{"key":"e_1_2_2_6_1","unstructured":"\u00a0"},{"key":"e_1_2_2_7_2","doi-asserted-by":"publisher","DOI":"10.1007\/12_077"},{"key":"e_1_2_2_8_2","volume-title":"Polymer\/POSS Nanocomposites and Hybrid Materials. Preparation, Properties, Applications","year":"2018"},{"key":"e_1_2_2_9_2","doi-asserted-by":"publisher","DOI":"10.1039\/D0DT00587H"},{"key":"e_1_2_2_10_2","author":"Soldatov M.","year":"2021","journal-title":"Prog. Polym. 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