Highly efficient synthesis of 3-amino-/alkylthio-cyclobut-2-en-1-ones based on the cyclization of acyl ketene dithioacetals

Yu-Long Zhao, Shao-Chun Yang, Chong-Hui Di, Xiao-Dan Han, Qun Liu
  • Chemical Communications, January 2010, Royal Society of Chemistry
  • DOI: 10.1039/c0cc02470h