Dichloromethane → N-cyclohexyl-N-thiazol-2-yl-1-(2-chlorobenzoyl)-5-hydroxy-2-methylindole-3-acetamide

HRID 2219672

Reaction equation

HRID 2219672 reaction equation
[CH:1]1([N:7]([C:32]2[S:33][CH:34]=[CH:35][N:36]=2)[C:8](=[O:31])[CH2:9][C:10]2[C:18]3[C:13](=[CH:14][CH:15]=[C:16]([O:19]C)[CH:17]=3)[N:12]([C:21](=[O:29])[C:22]3[CH:27]=[CH:26][C:25](Cl)=[CH:24][CH:23]=3)[C:11]=2[CH3:30])[CH2:6][CH2:5][CH2:4][CH2:3][CH2:2]1.B(Br)(Br)Br.[Cl:41]CCl>>[CH:1]1([N:7]([C:32]2[S:33][CH:34]=[CH:35][N:36]=2)[C:8](=[O:31])[CH2:9][C:10]2[C:18]3[C:13](=[CH:14][CH:15]=[C:16]([OH:19])[CH:17]=3)[N:12]([C:21](=[O:29])[C:22]3[CH:27]=[CH:26][CH:25]=[CH:24][C:23]=3[Cl:41])[C:11]=2[CH3:30])[CH2:2][CH2:3][CH2:4][CH2:5][CH2:6]1

Participants

4

Reactant 3

HCID 6344DichloromethaneHCID 25134Boron tribromideHCID 58618036N-cyclohexyl-N-thiazol-2-yl-1-(4-chlorobenzoyl)-5-methoxy-2-methylindole-3-acetamide

Product 1

HCID 69311092N-cyclohexyl-N-thiazol-2-yl-1-(2-chlorobenzoyl)-5-hydroxy-2-methylindole-3-acetamide

Procedure

To a solution of 2 g (3.83 mmol) of N-Cyclohexyl-N-thiazol-2-yl-1-(4-chlorobenzoyl)-5-methoxy-2-methylindole-3-acetamide in 20 mL of anhydrous dichloromethane under nitrogen at −78° C. was added dropwise 1.1 mL (11.5 mmol) of boron tribromide over 15 minutes. The reaction was allowed to warm to room temperature and stirred for 20 hr before quenching with water (5 mL). The layers were separated and the organic layer dried (Na2SO4), filtered and evaporated. The residue was chromatographed on silica to give the title compound. 1H NMR (DMSO) δ 9.24 (1H, s), 7.79 (2H, bs), 7.70 (4H, m), 6.87 (1H, d), 6.81 (1H, d), 6.59 (1H, dd), 4.43 (1H, bs), 3.40 2.08 (1H, m), 1.77 (4H, m), 1.61 (1H, m), 1.32 (4H, m). 5H concealed by DMSO and water signals.

Workup

  1. custombefore quenching with water (5 mL)
  2. customThe layers were separated
  3. dry with materialthe organic layer dried (Na2SO4)
  4. filtrationfiltered
  5. customevaporated
  6. customThe residue was chromatographed on silica

Sources & evidence

ORD record
ord-e4d6537816ac4fc1be6ed4a14f3a09b8
Source dataset
uspto-grants-2008_08
Patent number
US07414067B2

Linked notes

Loading…