Synfacts, Table of Contents Synfacts 2015; 11(2): 0142DOI: 10.1055/s-0034-1379832 Synthesis of Materials and Unnatural Products © Georg Thieme Verlag Stuttgart · New YorkDyeing of LaughterContributor(s): Timothy M. Swager , Kathleen R. WhiteRecommend Article Abstract Buy ArticleKey words Key wordsazo coupling - dyes - N-heterocyclic carbenes - nitrous oxide Full Text