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H. Sharghi, and M. Hosseini, “Solvent-free and one-step Beckmann rearrangement of ketones and aldehydes by zinc oxide,” Synthesis, Vol. 2002, No. 8, 2002, pp. 1057 1060. doi:10.1055/s-2002-28520

has been cited by the following article:

• TITLE: ZnO Nanobelts: An Efficient Catalyst for Synthesis of 5-Arylidine-2,4-Thiazolidinediones and 5-Arylidine-Rhodanines

  AUTHORS: Suresh, Jagir S. Sandhu

  KEYWORDS: ZnO Nanobelts; Knoevenagel Condensation; 2, 4-Thiazolidinedione; Rhodanine; Solvent-Free

  JOURNAL NAME: International Journal of Organic Chemistry, Vol.2 No.3A, November 30, 2012

  ABSTRACT: A facile preparation of ZnO nanobelts by chemical precipitation technique and its utility as catalyst in Knoevenagel condensation of 2,4-thiazolidinedione/rhodanine has been described. X-ray diffraction and transmission electron microscopy techniques revealed the formation ZnO nanobelts. Scanning electron microscopic observations indicate that the lengths of nanobelts are ranging from a few hundreds of micrometers to a few millimeters. Its use for the condensation of aldehydes and active methylene compounds under solvent free reaction condition at 90℃ afforded the corresponding products in excellent yields in minute time.