01422nas a2200253   4500008004100000022001400041245011600055210006900171260011000240300001400350490000700364520044900371653001700820653002600837653003000863653001800893653001400911653002600925100002300951700002200974700002000996700002201016856013001038       2012                        eng d  a0376-471000aCu-II-exchanged montmorillonite K10 clay-catalyzed direct carboxylation of terminal alkynes with carbon dioxide0 aCuIIexchanged montmorillonite K10 claycatalyzed direct carboxyla  aDR K S KRISHNAN MARG, PUSA CAMPUS, NEW DELHI 110 012, INDIAbNATL INST SCIENCE COMMUNICATION-NISCAIRcSEP  a1325-13290 v513 a<p>A new, simple and straight-forward protocol for direct carboxylation of terminal alkynes has been developed using Cu-II-montmorillonite K10 clay as a heterogeneous catalyst and CO2 as the C1 carbon feedstock. Also coupling of terminal alkynes with CO2 (1 atm) in the presence of alkyl halides has been achieved under the same reaction conditions, thereby providing access to a variety of functionalized alkyl-2-alkynoates in high yields.</p>10aAlkyl esters10aAlkyne C-H activation10aCarbon dioxide activation10aCarboxylation10aCatalysts10aMontmorillonite clays1 aAher, Ravindra, D.1 aGade, Madhuri, H.1 aReddy, Santhosh1 aSudalai, Arumugam  uhttps://library.ncl.res.in/content/cu-ii-exchanged-montmorillonite-k10-clay-catalyzed-direct-carboxylation-terminal-alkynes-0