Thionyl Chloride → HCID 18762821, compound

Participants

Reaction Steps

3.80 g of 4-hydroxy-6-cyclopentylmethoxy-7-methylcarbonyloxy-quinazoline are suspended in 90 ml thionyl chloride and heated to boiling under a nitrogen atmosphere. After the addition of four drops of N,N-dimethylformamide the reaction mixture is refluxed for a further two hours. After cooling to ambient temperature the excess thionyl chloride is distilled off in a water jet vacuum. The brown residue is stirred with 30 ml toluene. The solvent is distilled off, leaving 4.30 g of a greyish-brown solid, which is reacted further without any more purification.

Provenance & Evidence