1. Zhi-tang Huang and Zhi-rong Liu:
Synthesis of Imidazo[1,2-a]pyridine and Pyrido[1,2-a]pyrimidine Derivatives by the Addition and Cyclocondensation Reactions of Ketenaminals Containing Imidazolidine or Hexahydropyrimidine Ring with Esters of α,β-Unsaturated Acids
Heterocycles, Vol 24, Issue 8, 1986, pp.2247-2254
- DOI:
http://dx.doi.org/DOI:10.3987/R-1986-08-2247
2. James B. Patrick, Elizabeth K. Saunders:
Studies on the nenitzescu synthesis of 5-hydroxyindoles
Tetrahedron Letters, Volume 20, Issue 42, 1979, Pages 4009-4012
- DOI:
http://dx.doi.org/doi:10.1016/S0040-4039(01)86490-X
Nitrogen Bridgehead Compounds. Part 50. Vilsmeier-Haack Acylation of 6,7,8,9-Tetrahydro-4H-pyrido[1,2-a]pyrimidin-4-ones
Journal of Heterocyclic Chemistry Volume 22, 1985, pp. 593-599
- DOI:
http://dx.doi.org/DOI:10.1002/jhet.1985.5570220302