Chemical Research in Chinese Universities ›› 2019, Vol. 35 ›› Issue (1): 33-40.doi: 10.1007/s40242-018-8248-1

• Articles • Previous Articles     Next Articles

A Highly Efficient and Recyclable Solid Acid Catalyst for Synthesis of Spiro-oxindole Dihydroquinazolinones Under Ultrasound Irradiation

YANG Xiufang1,2,3, WANG Xiaogang1, WANG Tingting1, WANG Weitao1,2, ZHANG Jin1,2, MA Yangmin1,2,3   

  1. 1. College of Chemistry & Chemical Engineering, Shaanxi University of Science and Technology, Xi'an 710021, P. R. China;
    2. Shaanxi Key Laboratory of Chemical Additives for Industry, Shaanxi University of Science and Technology, Xi'an 710021, P. R. China;
    3. Shaanxi Research Institute of Agricultural Products Processing Technology, Shaanxi University of Science and Technology, Xi'an 710021, P. R. China
  • Received:2018-08-03 Revised:2018-09-03 Online:2019-02-01 Published:2018-10-22
  • Contact: YANG Xiufang, WANG Weitao E-mail:yangxf@sust.edu.cn;wangweitao@sust.edu.cn
  • Supported by:
    Supported by the Science and Technology Innovation Project of Shaanxi Province, China(No.2016KTTSNY03-04) and the Scientific Research Project of the Education Department of Shaanxi Province, China(Nos.17JK0107, 18JK0117).

Abstract: A simple, efficient and green procedure for the synthesis of spiro-oxindole dihyfroquinazolinones was developed by multi-component condensation of isatoic anhydride, aniline and isatin in the presence of a novel solid acid catalyst under ultrasound irradiation. The present environmentally benign protocol offers several advantages, such as shorter reaction time, a wide range of functional group tolerance, the use of an inexpensive heterogeneous catalyst, and a high yield of products via a simple experimental and work-up procedure. The mesoporous solid acid catalyst was directly prepared from phytic acid by microwave-sulfonation method without template. The phytic acid based solid acid was fully characterized by means of Fourier transform infrared spectroscopy (FTIR), Raman spectroscopy, X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and transmission electron microscopy (TEM). The catalyst can be recovered and reused for at least five runs without significant impact on the product yields.

Key words: Microwave-sulfonation method, Solid acid catalyst, Spiro-oxindole dihyfroquinazolinone