Methanol → HCID 21941479, compound

Participants

Reaction Steps

To the stirred solution of 6,7-dihydro-5H-pyrazolo[5,1-b][1,3]oxazine-2-carboxylate: (4.0 g, 20 mmol) of in 100 ml of THF was added 0.71 g of lithium borohydride and 1.03 g of methanol. The solution was heated at 40 C. for 2.5 hour. The reaction was quenched by 1N HCl, and adjusted to pH 1.3 and stirred at room temperature for 1 hour. The reaction mixture was adjusted pH to 8 with k2CO3. The reaction mixture was extracted with ethyl acetate. The organic layer was dried over MgSO4, and concentrated to an oil and column chromatographyed to give 2.08 g of the desired product (67%); (M+H) 155.

Provenance & Evidence