683779-79-5

Upstream product

• 6627-91-4 2-cyanomethylbenzoic acid 
• 4815-24-1 2-amino-4,5-dimethyl-3-thiophenecarboxylic acid ethyl ester 
• 1201634-28-7 2,3-dimethyl-4-piperidino-11H-thieno[3',2':5,6]pyrimido[1,2-b]isoquinolin-11-one 
• 1201634-29-8 2,3-dimethyl-4-morpholino-11H-thieno[3',2':5,6]pyrimido[1,2-b]isoquinolin-11-one 
• 1201634-27-6 2,3-dimethyl-4-tetrahydro-1H-1-pyrrrolyl-11H-thieno[3',2':5,6]pyrimido[1,2-b]isoquinolin-11-one 

Downstream Products

• 1158978-36-9 C₂₄H₂₀N₂O₄S 

Relevant academic research and scientific papers

Synthesis of substituted 4-aminothieno[2,3-d]-, 4-aminothieno[3,2-d]- and 4-aminothieno[3,4-d]pyrimidines

A study was carried out on the nucleophilic cleavage of the lactam bond in 4-amino(pyrrolidino, piperidino, morpolino)thieno[2,3-d]-, -[3,2-d]-, and -[3,4-d]pyrimido[1,2-b]isoquinolin-11-ones. This bond is readily cleaved upon heating in methanolic NaOH a

Positional isomers of thienopyrimidinones

Condensation of o-cyanomethylbenzoic acids with esters of 2-aminothiophene-3-carboxylic and 3-amino-thiophene-2-carboxylic acids to give isomeric 2-(4-oxo-3,4-dihydrothieno[2,3-d]pyrimidin-2-ylmethyl)-benzoic acids and their ethyl and phenacyl esters. Met