Water → (7-Bromo-2,3-dihydrobenzo[b][1,4]dioxin-2-yl)methanol

関与物質

反応条件

反応手順

To a stirred solution of 5-bromosalicylaldehyde (5.0 g, 24.9 mmol), and epichlorohydrin (5.6 mL, 72.1 mmol) in 20 mL of DMF at 80° C. was added K2CO3 slowly in portions. The resulting mixture was then heated at 90° C. for 3 h. Reaction was then stopped, water was added, extracted with diethyl ether. The organic extracts were washed with water, brine, dried over Na2SO4, concentrated in vacuo. The residue was purified on a SiO2 flash column chromatography eluting with 15-30% EtOAc/hexanes to give 2.82 g (44%) of the title compound as colorless oil.

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