[Methoxy(tetrahydro-4H-pyran-4-ylidene)methoxy](trimethyl)silane → Methyl 4-{[4-(2-{[4-(benzyloxy)-1,2-benzisoxazol-3-yl]oxy}ethyl)piperidin-1-yl]methyl}tetrahydro-2H-pyran-4-carboxylate

Participants

Reaction Steps

[Methoxy(tetrahydro-4H-pyran-4-ylidene)methoxy](trimethyl)silane (2.2 g, 10.0 mmol, EXAMPLE 1, step 3) was added to the mixture of 4-(benzyloxy)-3-{2-[1-(ethoxymethyl)piperidin-4-yl]ethoxy}-1,2-benzisoxazole (3.4 g, 8.4 mmol, EXAMPLE 7, step 4) and magnesium chloride (40 mg, 0.42 mmol) in acetonitrile (16.0 mL) at ambient temperature. After being stirred at room temperature for 3 h, the mixture was concentrated in vacuo to give an oil. The residual oil was purified by silica gel column chromatography (ethyl acetate/hexane 2:3) to give 3.2 g (75%) of the title compound as a colorless oil.

Provenance & Evidence