2,3-Dihydro-1,4-benzodioxin-6-carbaldehyde → HCID 14795475, compound

Participants

Reaction Conditions

Reaction Steps

2.18 g (0.013 mol) of 1,4-benzodioxan-6-aldehyde, 80 ml of ethanol and 2.4 ml of glacial acetic acid are mixed together and 2.8 g (0.012 mol) of 5,6-diamino-1,3-dipropyluracil are added thereto. The clear solution is refluxed for 21/4 hours and then cooled to 60° C. At this temperature, 2.1 ml (0.013 mol) of diethylazodicarboxylate are added dropwise and the viscous suspension produced is mixed with 80 ml of ethanol and refluxed for 2 hours. After a further 20 hours at ambient temperature the mixture is cooled to 5° C., the solid matter is filtered under suction and washed with ethanol and ether. 4.1 g of the title compound are obtained in the form of a grey solid (=92% of theory), melting point 280°-282° C.

Provenance & Evidence