71222-77-0

Upstream product

• 71222-75-8 9-anilino-6-methyl-4-oxo-6,7,8,9-tetrahydro-4H-pyrido[1,2-a]pyrimidine-3-carboxylic acid 
• 62-53-3 aniline 
• 70943-70-3 9-bromo-6-methyl-4-oxo-6,7,8,9-tetrahydro-4H-pyrido[1,2-a]pyrimidine-3-carboxylic acid 

Downstream Products

• 104314-47-8 6-methyl-9-phenylamino-6,7-dihydro-4H-pyrido<1,2-a>pyrimidin-4-one 

Relevant academic research and scientific papers

Nitrogen Bridgehead Compounds, Part 49. Synthesis and Stereochemistry of 9-Aminotetrahydro-4H-pyridopyrimidin-4-ones.

The 9-phenylaminotetrahydro-4H-pyridopyrimidin-4-ones (4)-(9), synthesized from the 9-bromo compounds (1)-(3), displayed imine-enamine tautomerism.In solution (if R2 H) the equilibrium mixtures contain both cis- and trans-imines.The e

Antiallergic nitrogen bridge-head compounds

Antiallergic and antiasthmatic compounds of the formula STR1 of which 9-phenylamino-6-methyl-4-oxo-6,7-dihydro-4H-pyrido(1,2-a)pyrimidine-3-carboxylic acid and optically active antipodes and salts thereof are examples.