Urea → 7-Chloroquinazoline-2,4-diol

Participants

Reaction Conditions

Reaction Steps

A mixture of 2-amino-4-chlorobenzoic acid (2.00 g, 11.6 mmol) and urea (2.80 g, 46.6 mmol) was heated to 200° C. for 1 h. The mixture was allowed to cool to room temperature and the resulting mass was triturated well with water. The product was collected by filtration (2.30 g, 100%). The MS and NMR data are in agreement with those that have been previously described: Organic Process Research & Development, 2003, 7, 700-706. 1H NMR (600 MHz, DMSO-d6): 12.00 (br s, 2H), 8.59-8.53 (m, 1H), 7.93-7.80 (m, 2H).

Provenance & Evidence