Potassium Cyanide → 4-[3-[6-(3-Bromo-5-cyanomethyl-phenoxy)-hexyl]-2-(2-ethoxy carbonylethyl)-phenoxy]-butyric acid ethyl ester

HRID 416981Notes

Reaction equation

[CH2:1]([O:3][C:4](=[O:42])[CH2:5][CH2:6][CH2:7][O:8][C:9]1[CH:14]=[CH:13][CH:12]=[C:11]([CH2:15][CH2:16][CH2:17][CH2:18][CH2:19][CH2:20][O:21][C:22]2[CH:27]=[C:26]([CH2:28]OS(C)(=O)=O)[CH:25]=[C:24]([Br:34])[CH:23]=2)[C:10]=1[CH2:35][CH2:36][C:37]([O:39][CH2:40][CH3:41])=[O:38])[CH3:2].[C-:43]#[N:44].[K+]>CN(C=O)C.CCOC(C)=O>[CH2:1]([O:3][C:4](=[O:42])[CH2:5][CH2:6][CH2:7][O:8][C:9]1[CH:14]=[CH:13][CH:12]=[C:11]([CH2:15][CH2:16][CH2:17][CH2:18][CH2:19][CH2:20][O:21][C:22]2[CH:27]=[C:26]([CH2:28][C:43]#[N:44])[CH:25]=[C:24]([Br:34])[CH:23]=2)[C:10]=1[CH2:35][CH2:36][C:37]([O:39][CH2:40][CH3:41])=[O:38])[CH3:2]

Participants

Conditions

Temperature: 60 °C

Procedure

To a solution of 4-[3-[6-(3-bromo-5-methanesulfonyloxymethyl-phenoxy)-hexyl]-2-(2-ethoxycarbonyl-ethyl)-phenoxy]-butyric acid ethyl ester (2.51 g, 3.74 mmol) in DMF (40 mL), KCN (292 mg, 4.48 mmol) was added and stirred a 60° C. overnight. The reaction was diluted with EtOAc (250 mL) washed with water (100 mL×2), brine (50 mL), dried with Na2SO4. Concentration under reduced pressure provided an oil. Flash column chromatography (30% EtOAc/Hex) provided a light yellow oil (1.19 g, 53% yield). 1H NMR (CDCl3): δ 7.08 (t, 1H), 7.04 (s, 1H), 6.99 (s, 1H), 6.79 (s, 1H), 6.77 (d, 1H), 6.68 (d, 1H), 4.17-4.06 (m, 4H), 4.01-3.91 (m, 4H), 3.68 (s, 2H), 2.97 (dd, 2H), 2.63 (dd, 2H), 2.56-2.46 (m, 4H), 2.17-0.89 (m, 16H).

Workup

washwashed with water (100 mL×2), brine (50 mL)
dry with materialdried with Na2SO4
concentrationConcentration under reduced pressure
customprovided an oil

Sources & evidence

ORD record: ord-bc0a5ca5f672412bbb3123df565fbb56
Source dataset: uspto-grants-2012_01
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08088936B2

Reaction notes

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