Sodium periodate → 2-(2-Isopropyl-2H-[1,2,4]triazol-3-yl)-4,5-dihydro-6-oxa-3-thia-1-aza-benzo[e]azulene-8-carbaldehyde

Participants

Reaction Steps

To a solution of 2-(2-Isopropyl-2H-[1,2,4]triazol-3-yl)-8-vinyl-4,5-dihydro-6-oxa-3-thia-1-aza-benzo[e]azulene (0.200 g, 0.591 mmol) in tetrahydrofuran (20 mL) and water (10 mL) was added osmium tetraoxide (0.0473 mmol, 4% wt in water, 0.3 ml) followed by sodium metaperiodate (0.253 g, 0.00118 mol) slowly. The mixture was stirred at room temperature for 6 hours. The reaction was quenched with saturated sodium thiosulfate, then diluted with ethyl acetate and extracted 3 times with ethyl acetate. The organic phases were combined, dried with Na2SO4 and concentrated to give 2-(2-Isopropyl-2H-[1,2,4]triazol-3-yl)-4,5-dihydro-6-oxa-3-thia-1-aza-benzo[e]azulene-8-carbaldehyde. MS(ESI+) 341.1

Provenance & Evidence