N,N-Diethylethanamine trihydrofluoride → HCID 22285138, compound

HRID 381753Notes

Reaction equation

HRID 381753 reaction equation
[Si]([O:8][C:9]1[CH:10]=[C:11]2[C:15](=[CH:16][CH:17]=1)[N:14]([C:18]([O:20][C:21]([CH3:24])([CH3:23])[CH3:22])=[O:19])[C:13]([C:25]1[C:26]([Cl:35])=[N:27][C:28]3[C:33]([CH:34]=1)=[CH:32][CH:31]=[CH:30][CH:29]=3)=[CH:12]2)(C(C)(C)C)(C)C.F.F.F.C(N(CC)CC)C>C(#N)C>[Cl:35][C:26]1[C:25]([C:13]2[N:14]([C:18]([O:20][C:21]([CH3:24])([CH3:23])[CH3:22])=[O:19])[C:15]3[C:11]([CH:12]=2)=[CH:10][C:9]([OH:8])=[CH:17][CH:16]=3)=[CH:34][C:33]2[C:28](=[CH:29][CH:30]=[CH:31][CH:32]=2)[N:27]=1

Participants

4

Reactant 2

HCID 175505N,N-Diethylethanamine trihydrofluorideHCID 17930066tert-butyl 5-{[tert-butyl(dimethyl)silyl]oxy}-2-(2-chloro-3-quinolinyl)-1H-indole-1-carboxylate

Product 1

HCID 22285138HCID 22285138, compound

Reagents, catalysts & solvents 1

HCID 6342AcetonitrileSolvent

Procedure

A solution of tert-butyl 5-{[tert-butyl(dimethyl)silyl]oxy}-2-(2-chloro-3-quinolinyl)-1H-indole-1-carboxylate 1-7 (2.50 g, 4.91 mmol, 1 equiv) and triethylamine trihydrofluoride (3.60 mL, 22.1 mmol, 4.50 equiv) in acetonitrile (100 mL) was stirred at 23° C. for 20 h. The reaction mixture was concentrated, and the residue was partitioned between saturated aqueous sodium bicarbonate solution and ethyl acetate. The organic layer was washed with brine, dried over magnesium sulfate and concentrated to tert-butyl 2-(2-chloro-3-quinolinyl)-5-hydroxy-1H-indole-1-carboxylate (1-8) as a tan colored foam. 1H NMR (400 MHz, CDCl3) δ8.18 (d, 1H, J=9.0 Hz), 8.17 (s, 1H), 8.07 (d, 1H, J=8.4 Hz), 7.86 (d, 1H, J=8.1 Hz), 7.77 (br t, 1H, J=8.4 Hz), 7.61 (br t, 1H, J=8.1 Hz), 7.03 (d, 1H, J=2.6 Hz), 6.93 (dd, 1H, J=8.8, 2.6 Hz), 6.55 (s, 1H), 1.26 (s, 9H).

Workup

  1. concentrationThe reaction mixture was concentrated
  2. customthe residue was partitioned between saturated aqueous sodium bicarbonate solution and ethyl acetate
  3. washThe organic layer was washed with brine
  4. dry with materialdried over magnesium sulfate
  5. concentrationconcentrated to tert-butyl 2-(2-chloro-3-quinolinyl)-5-hydroxy-1H-indole-1-carboxylate (1-8) as a tan colored foam

Sources & evidence

ORD record
ord-24e32feb29dc494e9952c0cac8912a5d
Source dataset
uspto-grants-2001_10
Patent number
US06306874B1

Reaction notes

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