Synthesis and Reactions of Some New Heterocyclic Compounds Related to Pyrrolylthieno[2,3-d]Pyrimidines and Thieno[2,3-d][4,5-d] Dipyrimidines
作者:Maisa I. Abdel Moneam
DOI:10.1080/104265090509144
日期:2005.2
ABSTRACT Condensation of ethyl-5-amino-2,4-diphenylthieno[2,3-d]pyrimidine-6-carboxylate (3a) with 2,5-dimethoxy tetrahydrofurane in acetic acid gives the corresponding 5-pyrrolyl derivative 4, which in turn could be easily reacted with hydrazine hydrate in ethanol yielding the carbohydrazide derivative 5. Reaction of 5 with aromatic aldehydes, acetylacetone, carbon disulfide or phenylisothiocyanate