Triethylamine → HCID 68587064, compound

HRID 17565Notes

Reaction equation

HRID 17565 reaction equation
[CH3:1][N:2]([CH3:8])[C@H:3]1[CH2:7][CH2:6][NH:5][CH2:4]1.C(N(CC)CC)C.[C:16]([C:18]1[C:23]2[N:24]=[C:25]([NH:27][CH2:28][CH2:29][C:30]([O:32][C:33]([CH3:36])([CH3:35])[CH3:34])=[O:31])[O:26][C:22]=2[C:21](F)=[C:20]([C:38]2[CH:43]=[CH:42][CH:41]=[CH:40][CH:39]=2)[C:19]=1[CH3:44])#[N:17]>CS(C)=O>[C:16]([C:18]1[C:23]2[N:24]=[C:25]([NH:27][CH2:28][CH2:29][C:30]([O:32][C:33]([CH3:36])([CH3:35])[CH3:34])=[O:31])[O:26][C:22]=2[C:21]([N:5]2[CH2:6][CH2:7][C@H:3]([N:2]([CH3:8])[CH3:1])[CH2:4]2)=[C:20]([C:38]2[CH:39]=[CH:40][CH:41]=[CH:42][CH:43]=2)[C:19]=1[CH3:44])#[N:17]

Participants

5

Reactant 3

HCID 8471TriethylamineHCID 7019156(3S)-(-)-3-(Dimethylamino)pyrrolidineHCID 68585188tert-butyl N-(4-cyano-7-fluoro-5-methyl-6-phenyl-1,3-benzoxazol-2-yl)-beta-alaninate

Product 1

HCID 68587064HCID 68587064, compoundYield 29%

Reagents, catalysts & solvents 1

HCID 679Dimethyl SulfoxideSolvent

Conditions

Temperature
150 °C

Procedure

(3S)-3-(dimethylamino)pyrrolidine (161 μl, 1.27 mmol) and triethylamine (177 μl, 1.27 mmol) were added to a dimethyl sulfoxide (9 ml) solution of tert-butyl N-(4-cyano-7-fluoro-5-methyl-6-phenyl-1,3-benzoxazol-2-yl)-β-alaninate (I-278) (335 mg, 0.847 mmol), followed by stirring in an oil bath at 150° C. for 5 hours. The reaction liquid was concentrated under reduced pressure, the residue was dissolved in ethyl acetate and washed with water and saturated brine. After drying over anhydrous sodium sulfate, the insoluble matter was separated by filtration, the residue obtained by concentration was purified by silica gel column chromatography (eluent, chloroform:methanol=20:1, v/v) to obtain the entitled compound (120 mg, 29%) as a brown oily substance.

Workup

  1. customThe reaction liquid
  2. concentrationwas concentrated under reduced pressure
  3. dissolutionthe residue was dissolved in ethyl acetate
  4. washwashed with water and saturated brine
  5. dry with materialAfter drying over anhydrous sodium sulfate
  6. customthe insoluble matter was separated by filtration
  7. customthe residue obtained by concentration
  8. customwas purified by silica gel column chromatography (eluent, chloroform

Sources & evidence

ORD record
ord-02128ba85eb246c388068ad31dc9d916
Source dataset
uspto-grants-2010_06
Patent number
US07737166B2

Reaction notes

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