Potassium Carbonate → trans-2-[3-(2-Oxopropylsulfonyl)-4-n-propoxy-5-(3-hydroxy-n-propoxy)phenyl]-5-(3,4,5-trimethoxyphenyl) tetrahydrofuran

HRID 982471Notes

Reaction equation

HRID 982471 reaction equation
[O:1]=[C:2]([CH3:35])[CH2:3][S:4]([C:7]1[CH:8]=[C:9]([C@H:18]2[CH2:22][CH2:21][C@H:20]([C:23]3[CH:28]=[C:27]([O:29][CH3:30])[C:26]([O:31][CH3:32])=[C:25]([O:33][CH3:34])[CH:24]=3)[O:19]2)[CH:10]=[C:11]([OH:17])[C:12]=1[O:13][CH2:14][CH2:15][CH3:16])(=[O:6])=[O:5].Br[CH2:37][CH2:38][CH2:39][OH:40].C(=O)([O-])[O-].[K+].[K+]>CN(C=O)C.C(OCC)C>[O:1]=[C:2]([CH3:35])[CH2:3][S:4]([C:7]1[CH:8]=[C:9]([C@H:18]2[CH2:22][CH2:21][C@H:20]([C:23]3[CH:24]=[C:25]([O:33][CH3:34])[C:26]([O:31][CH3:32])=[C:27]([O:29][CH3:30])[CH:28]=3)[O:19]2)[CH:10]=[C:11]([O:17][CH2:37][CH2:38][CH2:39][OH:40])[C:12]=1[O:13][CH2:14][CH2:15][CH3:16])(=[O:5])=[O:6]

Participants

6

Reactant 3

HCID 11430Potassium CarbonateHCID 123083-Bromo-1-propanolHCID 15078290trans-2-[3-(2-Oxopropylsulfonyl)-4-propoxy-5-hydroxyphenyl]-5-(3,4,5-trimethoxyphenyl)tetrahydrofuran

Product 1

HCID 15078291trans-2-[3-(2-Oxopropylsulfonyl)-4-n-propoxy-5-(3-hydroxy-n-propoxy)phenyl]-5-(3,4,5-trimethoxyphenyl) tetrahydrofuran

Reagents, catalysts & solvents 2

HCID 3283Diethyl EtherSolventHCID 6228DimethylformamideSolvent

Conditions

Temperature
80 °C

Procedure

A mixture of trans-2-[3-(2-oxopropylsulfonyl)-4-propoxy-5-hydroxyphenyl]-5-(3,4,5-trimethoxyphenyl)tetrahydrofuran (30 mg, 0.059 mmol), 3-bromo-1-propanol (12 uL, 0.13 mmol) and potassium carbonate (17 mg, 0.12 mmol) in DMF (0.5 mL) was heated at 80° C. with stirring under nitrogen for 1 h. The reaction mixture was cooled and diluted with ethyl ether. It was washed with water (2 x), brine, dried, filtered, and evaporated to a residue, which was purified by preparative TLC (hexane-ethyl acetate; 7:3, v/v) to give the title compound: Rf 0.3; NMR (CDCl3) δ 2.38 (s, SO2CH2COCH3), 4.15 and 4.24 (2 t, OCH2CH2), 4.48 (s, SO2CH2), 5.22 (m, H-2 and H-5).

Workup

  1. temperatureThe reaction mixture was cooled
  2. washIt was washed with water (2 x), brine
  3. customdried
  4. filtrationfiltered
  5. customevaporated to a residue, which
  6. customwas purified by preparative TLC (hexane-ethyl acetate

Sources & evidence

ORD record
ord-17696e70d4a948b6aa427da6776a590e
Source dataset
uspto-grants-1991_02
Patent number
US04996203

Reaction notes

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