J. J. Wade, C. B. Tose, C. J. Matson and V. L. Stelzer, “Synthesis and Antiallergic Activity of Some Acidic Derivatives of 4H-Pyrimido[2,1-b]benzazol-4-ones,” Journal of Medicinal Chemistry, Vol. 26, No. 4, 1983, pp. 608-611. doi:10.1021/jm00358a031

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.