Boron tribromide → Anacetrapib metabolite M1

HRID 409339Notes

Reaction equation

HRID 409339 reaction equation
[F:1][C:2]([F:44])([F:43])[C:3]1[CH:4]=[C:5]([CH:13]2[O:17][C:16](=[O:18])[N:15]([CH2:19][C:20]3[CH:25]=[C:24]([C:26]([F:29])([F:28])[F:27])[CH:23]=[CH:22][C:21]=3[C:30]3[CH:35]=[C:34]([CH:36]([CH3:38])[CH3:37])[C:33]([F:39])=[CH:32][C:31]=3[O:40]C)[CH:14]2[CH3:42])[CH:6]=[C:7]([C:9]([F:12])([F:11])[F:10])[CH:8]=1.B(Br)(Br)Br>C(Cl)Cl>[F:44][C:2]([F:1])([F:43])[C:3]1[CH:4]=[C:5]([C@H:13]2[O:17][C:16](=[O:18])[N:15]([CH2:19][C:20]3[CH:25]=[C:24]([C:26]([F:28])([F:29])[F:27])[CH:23]=[CH:22][C:21]=3[C:30]3[CH:35]=[C:34]([CH:36]([CH3:38])[CH3:37])[C:33]([F:39])=[CH:32][C:31]=3[OH:40])[C@H:14]2[CH3:42])[CH:6]=[C:7]([C:9]([F:12])([F:11])[F:10])[CH:8]=1

Participants

4

Reactant 2

HCID 25134Boron tribromideHCID 498494512-Oxazolidinone, 5-[3,5-bis(trifluoromethyl)phenyl]-3-[[4'-fluoro-2'-methoxy-5'-(1-methylethyl)-4-(trifluoromethyl)[1,1'-biphenyl]-2-yl]methyl]-4-methyl-, (4S,5R)-

Product 1

HCID 11527411Anacetrapib metabolite M1Yield 73.8%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

A solution of 4S,5R)-5-(3,5-bis(trifluoromethyl)phenyl)-3-((4′-fluoro-5′-isopropyl-2′-methoxy-4-(trifluoromethyl)biphenyl-2-yl)methyl)-4-methyl-1,3-oxazolidin-2-one (54) [prepared by methods described in WO2007/005572] (1.4 g) in DCM (5 mL) was treated with BBr3 (0.9 mL) at 15-16° C. and the reaction mixture stirred for 1 hr. The mixture was quenched with ice and diluted with EtOAc (150 mL). The mixture was washed with water, sat'd NaHCO3 solution, and brine, dried (Na2SO4), filtered and the solvent concentrated under reduced pressure. The crude product was purified by chromatography on silica gel to give 1.01 g (60%) of 55. 1H NMR (CDCl3) δ: 7.85 (s, 1H), 7.75-7.62 (m, 4H), 7.42 (m, 1H), 6.96 (dd, 1H), 7.69 (dd, 1H), 5.64 (d, 0.5H), 5.39 (d, 0.5H), 4.92-4.80 (m, 1H), 4.18 (d, 0.5H), 3.99 (d, 0.5H), 3.85 (m, 0.5H), 3.75 (m, 0.5H), 3.19 (m, 1H), 1.17-1.25 (m, 6H), 0.57 (d, 1.5H), 0.45 (d, 1.5H).

Workup

  1. customThe mixture was quenched with ice
  2. additiondiluted with EtOAc (150 mL)
  3. washThe mixture was washed with water
  4. dry with materialdried (Na2SO4)
  5. filtrationfiltered
  6. concentrationthe solvent concentrated under reduced pressure
  7. customThe crude product was purified by chromatography on silica gel

Sources & evidence

ORD record
ord-a8b2e7fc65e045a88e96e451de2036b1
Source dataset
uspto-grants-2014_06
Patent number
US08759383B2

Reaction notes

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