Some reactions of 3-amino-2-carboethoxy-4, 6-dimethylthieno [2, 3-b]-pyridine. Synthesis of some new thienopyridopyrimidines

…, AM Kamal El-Dean, MSK Youssef…

Index: Hassan, Kh. M.; El-Dean, A.M. Kamal; Youssef, M. S. K.; Atta, F. M.; Abbady, M. S. Phosphorus, Sulfur and Silicon and the Related Elements, 1990 , vol. 47, p. 283 - 289

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Citation Number: 9

Abstract

Abstract Thienopyridine oxazinone (1) has been prepared and explored as a precursor by its reaction with some reagents namely, ammonium acetate, aliphatic amines, aromatic amines, hydrazine hydrate, thiosemicarbazide, and ethyl glycinate to give pyridothienopyrimidines (11-VII). The pyrimidinone compound (11) was converted to the 4- chloro derivative (X) by its reaction with excess POCl3 Interaction of the 4- ...