... RSC Adv., 2014, 4, 13738-13741. ... image file: c3ra47712f-s4.tif. Scheme 4 The controlling experiment. ... Rev., 2009, 109, 5799 CrossRef CAS PubMed . For the review on decarboxylative coupling of alkynyl carboxylic acids, see: K. Park and S. Lee, RSC Adv., 2013, 3, 14165 RSC . ...