反应详情

A mixture of 2-(2-Isopropyl-2H-[1,2,4]triazol-3-yl)-4,5-dihydro-6-oxa-1,3a-diaza-benzo[e]azulene-8-carbaldehyde (0.35, 0.90 mmol), methylamine (0.9 mL, 1.80 mmol, 2M solution in THF) and 4 Å molecular sieves in CHCl3 were stirred at RT for 1.5 h before sodium triacetoxyborohydride (0.57 g, 2.7 mmol) was added. The resultant mixture was stirred for 16 h then washed with saturated aqueous sodium bicarbonate. The aqueous phase was extracted with 10% methanol in DCM and the combined organic phases dried (Na2SO4) and concentrated in vacuo. The resultant residue was subjected to flash chromatography (SiO2, gradient 0 to 20% methanol in DCM) to give [2-(2-Isopropyl-2H-[1,2,4]triazol-3-yl)-4,5-dihydro-6-oxa-1,3a-diaza-benzo[e]azulen-8-ylmethyl]-methyl-amine (109 mg, 36%). LCMS: RT=1.90 min, [M+H]+=339

1. additionwas added
2. washthen washed with saturated aqueous sodium bicarbonate
3. extractionThe aqueous phase was extracted with 10% methanol in DCM
4. dry with materialthe combined organic phases dried (Na2SO4)
5. concentrationconcentrated in vacuo