Synthesis of highly substituted N-​(furan-​3-​ylmethylene)​benzenesulfonamides by a gold(I)​-​catalyzed oxidation​/1,​2-​alkynyl migration​/cyclization cascade - Wang, Tao; Huang, Long; Shi, Shuai; Rudolph, Matthias; Hashmi, A. Stephen K. (Chemistry - a European journal, 2014)