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In this study, we report the first heterogeneous, metal\u2010free organocatalytic protocol for the three\u2010component synthesis of propargylic esters from terminal alkynes, CO\n                    <jats:sub>2<\/jats:sub>\n                    , and alkyl halides, employing a vinyl addition polynorbornene (VA\u2010PNB)\u2010supported\n                    <jats:italic>N<\/jats:italic>\n                    \u2010Heterocyclic Carbene (NHC) precatalyst. Optimization studies revealed that the immobilized\n                    <jats:italic>tert<\/jats:italic>\n                    \u2010butyl\u2010substituted NHC outperforms other structural variants, promoting the carboxylative coupling under metal\u2010free conditions. The catalyst can be recovered by filtration and regenerated through mild acid treatment. A gradual decrease in activity is observed upon reuse due to retained potassium carbonate used as a base in the reaction, but the catalyst activity can be recovered with further washing. The method demonstrates excellent chemoselectivity with cinnamyl\u2010type electrophiles, offering a sustainable and operationally simple approach to valuable functionalized esters, without the need for transition metals.\n                  <\/jats:p>","DOI":"10.1002\/cssc.70872","type":"journal-article","created":{"date-parts":[[2026,7,11]],"date-time":"2026-07-11T07:17:43Z","timestamp":1783754263000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Heterogeneous Organocatalytic Synthesis of Propargylic Esters Using a Polymer\u2010Supported\n                    <i>N<\/i>\n                    \u2010Heterocyclic Carbene"],"prefix":"10.1002","volume":"19","author":[{"given":"Dimitrios K.","family":"Giannopoulos","sequence":"first","affiliation":[{"name":"Department of Chemistry National and Kapodistrian University of Athens  Athens 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