1,3,6-TRIMETHYL-2,4-DIOXO-1,2,3,4-TETRAHYDRO-PYRIMIDINE-5-CARBALDEHYDE synthesis

Yield:-

Steps:

Multi-step reaction with 2 steps
1.1: potassium carbonate / acetone / 0.5 h / 20 °C / Inert atmosphere
1.2: 8 h / 60 °C / Inert atmosphere
2.1: trichlorophosphate / 4 h / 0 - 120 °C / Inert atmosphere

References:

Battistini, Lucia;Curti, Claudio;Lombardo, Marco;Pelosi, Giorgio;Pinna, Luigi;Rassu, Gloria;Sartori, Andrea;Zambrano, Vincenzo;Zanardi, Franca [Angewandte Chemie - International Edition,2020,vol. 59,# 45,p. 20055 - 20064][Angew. Chem.,2020,vol. 132,# 45,p. 20230 - 20239,10]