Synthesis of highly substituted 3-​formylfurans by a gold(I)​-​catalyzed oxidation​/1,​2-​alkynyl migration​/cyclization cascade - Wang, Tao; Shi, Shuai; Hansmann, Max M.; Rettenmeier, Eva; Rudolph, Matthias; Hashmi, A. Stephen K. (Angewandte Chemie. International edition, 2014)