Potassium Hydroxide → (4S,5R)-5-[3,5-bis(trifluoromethyl)phenyl]-3-[(2'-chloro-4-cyclopropyl-5'-isopropylbiphenyl-2-yl)methyl]-4-methyl-1,3-oxazolidin-2-one

HRID 1028675Notes

Reaction equation

HRID 1028675 reaction equation
[F:1][C:2]([F:39])([F:38])[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](Br)[CH:23]=[CH:22][C:21]=3[C:27]3[CH:32]=[C:31]([CH:33]([CH3:35])[CH3:34])[CH:30]=[CH:29][C:28]=3[Cl:36])[C@H:14]2[CH3:37])[CH:6]=[C:7]([C:9]([F:12])([F:11])[F:10])[CH:8]=1.[CH:40]1(B(O)O)[CH2:42][CH2:41]1.[OH-].[K+]>O1CCOCC1.C1C=CC(P(C2C=CC=CC=2)[C-]2C=CC=C2)=CC=1.C1C=CC(P(C2C=CC=CC=2)[C-]2C=CC=C2)=CC=1.Cl[Pd]Cl.[Fe+2]>[F:1][C:2]([F:39])([F:38])[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]([CH:40]4[CH2:42][CH2:41]4)[CH:23]=[CH:22][C:21]=3[C:27]3[CH:32]=[C:31]([CH:33]([CH3:35])[CH3:34])[CH:30]=[CH:29][C:28]=3[Cl:36])[C@H:14]2[CH3:37])[CH:6]=[C:7]([C:9]([F:12])([F:11])[F:10])[CH:8]=1

Participants

6

Reactant 3

HCID 14797Potassium HydroxideHCID 2760897Cyclopropylboronic acidHCID 11556418(4S,5R)-5-[3,5-bis(trifluoromethyl)phenyl]-3-[(4-bromo-2'-chloro-5'-isopropylbiphenyl-2-yl)methyl]-4-methyl-1,3-oxazolidin-2-one

Product 1

HCID 11527223(4S,5R)-5-[3,5-bis(trifluoromethyl)phenyl]-3-[(2'-chloro-4-cyclopropyl-5'-isopropylbiphenyl-2-yl)methyl]-4-methyl-1,3-oxazolidin-2-one

Reagents, catalysts & solvents 2

HCID 178418228Bis(cyclopenta-1,4-dien-1-yl(diphenyl)phosphane);dichloropalladium;iron(2+)CatalystHCID 312751,4-DioxaneSolvent

Procedure

To a solution of (4S,5R)-5-[3,5-bis(trifluoromethyl)phenyl]-3-[(4-bromo-2′-chloro-5′-isopropylbiphenyl-2-yl)methyl]-4-methyl-1,3-oxazolidin-2-one (27 mg, 0.043 mmol) in 1,4-dioxane (1 mL) was added cyclopropylboronic acid (9 mg, 0.10 mmol), [1,1′-bis(diphenylphosphino)ferrocene]dichloropalladium (II) (10.4 mg, 30 mol %) and aqueous potassium hydroxide (42 μL, 3M, 3 eq.). The reaction mixture was purged with nitrogen and then sealed in a microwave vessel. The reaction vessel was subject to microwave irradiation at 120° C. for 20 min. Crude mixture was worked up with water and EtOAc. The combined organic extracts were dried over Na2SO4 and concentrated in vacuo to give the crude product. This was purified by preparative TLC plate eluted by 20% EtOAc in hexanes to afford the titled compound. LC-MS: 595.99 (M+1)+. 1H NMR (CDCl3, 500 MHz) a 6:4 mixture of rotamers δ 7.82-7.86 (m, 1 H), 7.66-7.72 (m, 2 H), 7.36-7.40 (m, 1 H), 7.21-7.23 (m, 0.5 H), 7.11-7.19 (m, 3 H), 7.01-7.08 (m, 1.5 H), 5.58 (d, J=8.0 Hz, 0.4 H), 5.50 (d, J=8.0 Hz, 0.6 H), 4.88 (d, J=15.1 Hz, 0.6H), 4.71 (d, J=15.6 Hz, 0.4H), 3.76-3.95 (m, 2 H), 2.84-2.95 (m, 1H), 1.92-2.00 (m, 1 H), 1.18-1.29 (m, 6 H), 1.00-1.07 (m, 2 H), 0.71-0.82 (m, 2 H), 0.47 (d, J=6.6 Hz, 1.2 H), 0.42 (d, J=6.6 Hz, 1.8 H).

Workup

  1. customThe reaction mixture was purged with nitrogen
  2. customsealed in a microwave vessel
  3. customirradiation at 120° C. for 20 min
  4. dry with materialThe combined organic extracts were dried over Na2SO4
  5. concentrationconcentrated in vacuo
  6. customto give the crude product
  7. customThis was purified by preparative TLC plate
  8. washeluted by 20% EtOAc in hexanes

Sources & evidence

ORD record
ord-b8b951c29326462ca070ccca3df11853
Source dataset
uspto-grants-2014_05
Patent number
US08735435B2

Reaction notes

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