4-[3-(Bicyclo[2.2.1]hept-2-yloxy)-4-Methoxyphenyl]-4-Hydroxy-1,2,3,4-Tetrahydro-2-Pyrimidinone → HCID 178488672, compound

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Reaction Steps

The hydroxypyrimidinone of Example 60 (0.2 g, 0.61 mmol) is dissolved in 5 ml ethanol, treated with 2.5 ml 1N NCl and refluxed for 6 hours. The reaction is cooled to room temperature, quenched with water and the product extracted 3× ethyl acetate. The organics are washed, dried, filtered and concentrated in vacuo to yield a crude substance which is crystallized from ethyl acetate to give 60 ml (31.5%) of the pyrimidinone as a crystalline solid. This material is a 7:3 mixture of endo-exo bicycloalkyl isomers.

Provenance & Evidence