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H. Wahe, J. T. Mbafor, A. E. Nkengfack, Z. T. Fomum, R. A. Cherkasov, O. Sterner and D. Doepp, “Heterocycles of Biological Importance: Part 7. Syn-thesis of Biologicallyactivepyrimido[2,1-b]benzothiazoles from Acetylenic Acids and2-Aminobenzothiazoles,” Arkivoc, Vol. 2003, No. 15, 2003, pp. 107-114.

has been cited by the following article:

• TITLE: A New and Efficient Method for the Synthesis of Pyrimido[2,1-b]Benzothiazole Derivatives

  AUTHORS: Fatemeh Chadegani, Fatemeh Darviche, Saeed Balalaie

  KEYWORDS: 4H-Pyrimido [2, 1-b] Benzothiazole; Tandem Knoevenagel-Michael Reaction; One-Pot Reaction; Green Chemistry

  JOURNAL NAME: International Journal of Organic Chemistry, Vol.2 No.1, March 15, 2012

  ABSTRACT: The one-pot three-component reaction of 2-aminobenzothiazole, benzaldehyde derivatives and β-ketoester, β-diketone or malonate derivatives in solvent-free conditions provides the corresponding pyrimido [2,1-b] benzothiazole derivatives at 60?C in 60% - 72% yields without using any catalyst in an optimistic time.