97146-41-3Relevant academic research and scientific papers
The synthesis of some new fused and substituted chromenes
El-Sayed, Ahmed M.
, p. 2709 - 2723 (2006)
Some new chromeno[2,3-b]pyrimidines, chromeno[3,2-c]pyridines, chromeno[2,3-b]pyridines and 3-chromenyl-1,3-thiazines were synthesized via the synthetic studies of the reaction of 2-imino-2H-chromen-3-thiocarboxamide with some aromatic aldehydes, active nitriles, and their ylidene derivatives. Copyright Taylor & Francis Group, LLC.
4-thioxo-benzopyrano[2,3-d]pyrimidine derivatives
-
, (2008/06/13)
4-Thioxobenzopyrano[2,3-d]-pyrimidine derivatives of the general formulae Ia or Ib STR1 are described. Compounds Ia and Ib are tautomers and are valuable intermediates for the preparation of 5H-[1]-benzopyrano[2,3-d]pyrimidine derivatives having ulcer-pro
