Potassium Carbonate → 8-t-Butyl-2-(4,6-dimethoxy pyrimid-2-ylaminomethyl)-1,4-dioxaspiro(4,5)decane

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Reaction Steps

8-t-butyl-2-aminomethyl-1,4-dioxaspiro(4,5)decane (3.3 g, 14.5 mmol), 4,6-dimethoxy-2-methylsulfonyl-pyrimidine (3.16 g, 14.5 mmol) and potassium carbonate (2.76 g, 20 mmol) were heated to 160° C. for 1 hour. The reaction mixture was then extracted with toluene and the concentrated extracts purified by flash chromatography using a 3:1 mixture of toluene and ethylacetate. 3.5 g of a faint yellow oil was obtained which crystallised on standing. NMR analysis indicated the product being a mixture of diastereoisomers. M.p.: 76°-106° C.

Provenance & Evidence