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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 904529Generated: October 30, 2026

Acetate → 4-oxo-2-phenyl-4H-pyrido[1,2-a]thieno[2,3-d]pyrimidine-7-carboxamide

https://huagongshe.com/reaction/904529

Reaction equation

Participants

RoleNameHCIDCharge
ReactantAcetateHCID 175—
Reactant6-ChloronicotinamideHCID 80456—
Reactantethyl 2-amino-5-phenylthiophene-3-carboxylateHCID 638860—
Product4-oxo-2-phenyl-4H-pyrido[1,2-a]thieno[2,3-d]pyrimidine-7-carboxamideHCID 128623674.1%

Reaction Steps

From 4.7 g (0.030 mol) of 6-chloro-3-pyridinecarboxamide (Aldrich Chemical Company) and 7.5 g (0.030 mol) of 2-amino-5-phenyl-3-thiophenecarboxylic acid, ethyl ester (Chemische Berichte, Vol. 99, pages 94-100, 1966), following the procedure of Example 22, there is obtained 0.4 g of 4-oxo-2-phenyl-4H-pyrido[1,2-a]thieno[2,3-d]pyrimidine-7-carboxamide, monoacetate; mp 348°-352° C. after recrystallization from glacial acetic acid.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04230707
Source datasetuspto-grants-1980_10
ORD IDord-893ab790e9ed4fa29744aa97721bbdde
Source noteuspto-grants-1980_10