Iwamoto, H., Yoshimura, M., Sonoda, T. and Kobayashi, H. (1983) Anion-Catalyzed Phase-Transfer Catalysis. I. Application to Diazo-Coupling Reactions. Bulletin of the Chemical Society of Japan, 56, 796-801.
http://dx.doi.org/10.1246/bcsj.56.796

has been cited by the following article:

• TITLE: One-Pot Four Component Reaction for the Synthesis of Formazans in an Environmentally Benign Procedure Mediated by KHSO4

  AUTHORS: Pranab Jyoti Das, Jesmin Begum

  KEYWORDS: Formazan, One Pot Synthesis, Solvent Free, Four Component Reaction, Microwave, KHSO4

  JOURNAL NAME: Green and Sustainable Chemistry, Vol.5 No.3, August 18, 2015

  ABSTRACT: A microwave mediated solvent free one pot synthesis of formazans is developed using the solid acid, KHSO4. The products were obtained in a short reaction time in high yield. This study was undertaken to find an alternative and green method for the synthesis of formazans in the absence of corrosive mineral acids, buffered solutions and volatile organic compounds (VOCs).