3-Hydroxybenzaldehyde → 3-(8-(1,3-Dioxolan-2-yl)octyloxy)benzaldehyde

HRID 332652Notes

Reaction equation

Br[CH2:2][CH2:3][CH2:4][CH2:5][CH2:6][CH2:7][CH2:8][CH2:9][CH:10]1[O:14][CH2:13][CH2:12][O:11]1.[OH:15][C:16]1[CH:17]=[C:18]([CH:21]=[CH:22][CH:23]=1)[CH:19]=[O:20].C(=O)([O-])[O-].[K+].[K+]>CN(C)C=O.O>[O:11]1[CH2:12][CH2:13][O:14][CH:10]1[CH2:9][CH2:8][CH2:7][CH2:6][CH2:5][CH2:4][CH2:3][CH2:2][O:15][C:16]1[CH:17]=[C:18]([CH:21]=[CH:22][CH:23]=1)[CH:19]=[O:20]

Participants

Conditions

Temperature: 80 °C

Procedure

To a stirred solution of 2-(8-bromooctyl)-1,3-dioxolane (5 g, 18.85 mmol) in dimethyl formamide (100 mL) was added 3-hydroxybenzaldehyde (2.37 g, 19.42 mmol) and potassium carbonate (5.37 g, 38.83 mmol). The reaction mixture was stirred at 80° C. for 16 hours. The reaction mixture was diluted with water and extracted with ethyl acetate (×3). The combined organic extracts were washed with saturated aqueous sodium hydrogen carbonate solution and brine, dried (sodium sulfate), filtered, and concentrated under reduced pressure. The crude material was purified by silica gel column chromatography eluting with 0-100% ethyl acetate in iso-hexane to afford the title compound (4.66 g, 78%).

Workup

extractionextracted with ethyl acetate (×3)
washThe combined organic extracts were washed with saturated aqueous sodium hydrogen carbonate solution and brine
dry with materialdried (sodium sulfate)
filtrationfiltered
concentrationconcentrated under reduced pressure
customThe crude material was purified by silica gel column chromatography
washeluting with 0-100% ethyl acetate in iso-hexane

Sources & evidence

ORD record: ord-7ea8671f9a0a407fa9595951e2b5b456
Source dataset: uspto-grants-2014_11
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08877774B2

Reaction notes

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