Hydrochloric Acid → HCID 11454785, compound

HRID 1373867Notes

Reaction equation

HRID 1373867 reaction equation
C([O:3][C:4](=[O:33])[CH2:5][O:6][C:7]1[CH:16]=[CH:15][C:14]2[C:9](=[CH:10][CH:11]=[C:12]([C:17]3[S:21][C:20]4[CH:22]=[CH:23][CH:24]=[CH:25][C:19]=4[C:18]=3[C:26](=[O:31])[CH2:27][CH2:28][CH2:29][CH3:30])[CH:13]=2)[C:8]=1[Br:32])C.[OH-].[K+].Cl>C1COCC1.O>[Br:32][C:8]1[C:9]2[C:14](=[CH:13][C:12]([C:17]3[S:21][C:20]4[CH:22]=[CH:23][CH:24]=[CH:25][C:19]=4[C:18]=3[C:26](=[O:31])[CH2:27][CH2:28][CH2:29][CH3:30])=[CH:11][CH:10]=2)[CH:15]=[CH:16][C:7]=1[O:6][CH2:5][C:4]([OH:33])=[O:3]

Participants

6

Reactant 3

HCID 313Hydrochloric AcidHCID 14797Potassium HydroxideHCID 69411771[1-Bromo-6-(3-pentanoyl-benzo[b]thiophen-2-yl)-naphthalen-2-yloxy]-acetic acid ethyl ester

Product 1

HCID 11454785HCID 11454785, compoundYield 75.2%

Reagents, catalysts & solvents 2

HCID 962WaterSolvent2×HCID 8028TetrahydrofuranSolvent

Procedure

A mixture of [1-bromo-6-(3-pentanoyl-benzo[b]thiophen-2-yl)-naphthalen-2-yloxy]-acetic acid ethyl ester (0.0932 g, 0.177 mmol) and potassium hydroxide (0.063 gm 1.1 mmol) in THF (5 mL) and water (5 mL) was stirred at ambient temperature for two hours. It was then poured in excess water and acidified with 2N hydrochloric acid. This was then extracted with ethyl acetate and washed with water and brine. The organic phase was dried with anhydrous magnesium sulfate, filtered, solvent evaporated and dried in vacuo at 64° C. for 25 hours to yield [1-bromo-6-(3-pentanoyl-benzo[b]thiophen-2-yl)-naphthalen-2-yloxy]-acetic acid as a light yellow solid (0.0662 g, 75.2%): MP: 164–5° C.; mass spectrum (+EI, [M+H]+) m/z 497/499. 1H NMR (500 MHz, DMSO-d6): δ13.0–13.2 (br, 1H), 8.24 (d, 1H, J=8.70 Hz), 8.07–8.13 (m, 3H), 7.95–7.97 (m, 1H), 7.76 (dd, 1H, J=8.78 Hz and 1.91 Hz), 7.45–7.51 (m, 3H), 5.02 (s, 2H), 2.42 (t, 2H, J=7.22 Hz), 1.40–1.46 (m, 2H), 0.97–1.04 (m, 2H), 0.58 ppm (t, 3H, J=7.41 Hz). Elemental Analysis for C25H21BrO4S: Calcd: C, 60.37; H, 4.26; N, 0.00; Found: C, 60.23; H, 4.35; N, 0.00.

Workup

  1. extractionThis was then extracted with ethyl acetate
  2. washwashed with water and brine
  3. dry with materialThe organic phase was dried with anhydrous magnesium sulfate
  4. filtrationfiltered
  5. customsolvent evaporated
  6. customdried in vacuo at 64° C. for 25 hours

Sources & evidence

ORD record
ord-e6878d6335194100b007a5b207769fe9
Source dataset
uspto-grants-2007_01
Patent number
US07163954B2

Reaction notes

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