Triethylamine → {(S)-6-[(R)-4-Bromomethyl-5-trifluoromethyl-indan-1-yloxy]-2,3-dihydro-benzofuran-3-yl}-acetic acid methyl ester

HRID 1422630Notes

Reaction equation

HRID 1422630 reaction equation
CS([Br:5])(=O)=O.[CH3:6][O:7][C:8](=[O:35])[CH2:9][C@H:10]1[C:14]2[CH:15]=[CH:16][C:17]([O:19][C@H:20]3[C:28]4[C:23](=[C:24]([CH2:33]O)[C:25]([C:29]([F:32])([F:31])[F:30])=[CH:26][CH:27]=4)[CH2:22][CH2:21]3)=[CH:18][C:13]=2[O:12][CH2:11]1.C(N(CC)CC)C>ClCCl>[CH3:6][O:7][C:8](=[O:35])[CH2:9][C@H:10]1[C:14]2[CH:15]=[CH:16][C:17]([O:19][C@H:20]3[C:28]4[C:23](=[C:24]([CH2:33][Br:5])[C:25]([C:29]([F:32])([F:31])[F:30])=[CH:26][CH:27]=4)[CH2:22][CH2:21]3)=[CH:18][C:13]=2[O:12][CH2:11]1

Participants

5

Reactant 3

HCID 8471TriethylamineHCID 190026Methanesulfonyl bromideHCID 86700812{(S)-6-[(R)-4-Hydroxymethyl-5-trifluoromethyl-indan-1-yloxy]-2,3-dihydro-benzofuran-3-yl}-acetic acid methyl ester

Product 1

HCID 86700813{(S)-6-[(R)-4-Bromomethyl-5-trifluoromethyl-indan-1-yloxy]-2,3-dihydro-benzofuran-3-yl}-acetic acid methyl ester

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

Methylsulfonyl bromide (0.96 mL) is added to a solution of {(S)-6-[(R)-4-hydroxymethyl-5-trifluoromethyl-indan-1-yloxy]-2,3-dihydro-benzofuran-3-yl}-acetic acid methyl ester (2.00 g) and triethylamine (1.98 mL) in dichloromethane (20 mL) chilled in an ice bath. The cooling bath is removed, and the solution is stirred at room temperature overnight. More dichloromethane is added, and the resulting solution is washed with aqueous NaHCO3 solution and brine, dried (Na2SO4), and concentrated. The residue is chromatographed on silica gel (cyclohexane/ethyl acetate) to give the title compound. LC (method 4): tR=1.24 min.

Workup

  1. temperaturechilled in an ice bath
  2. customThe cooling bath is removed
  3. additionMore dichloromethane is added
  4. washthe resulting solution is washed with aqueous NaHCO3 solution and brine
  5. dry with materialdried (Na2SO4)
  6. concentrationconcentrated
  7. customThe residue is chromatographed on silica gel (cyclohexane/ethyl acetate)

Sources & evidence

ORD record
ord-b812af822070495dac7dd6a551ba2b69
Source dataset
uspto-grants-2015_01
Patent number
US08927531B2

Reaction notes

Loading…