N-bromobutanimide → (4-{7-[Bis-(2-trimethylsilanyl-ethoxymethyl)-amino]-6-bromo-3-quinolin-3-yl-pyrazolo[1,5-a]pyrimidin-5-yl}-cyclohexyl)-acetic acid ethyl ester

HRID 2047065Notes

Reaction equation

HRID 2047065 reaction equation
[CH3:1][Si:2]([CH3:48])([CH3:47])[CH2:3][CH2:4][O:5][CH2:6][N:7]([CH2:39][O:40][CH2:41][CH2:42][Si:43]([CH3:46])([CH3:45])[CH3:44])[C:8]1[N:13]2[N:14]=[CH:15][C:16]([C:17]3[CH:18]=[N:19][C:20]4[C:25]([CH:26]=3)=[CH:24][CH:23]=[CH:22][CH:21]=4)=[C:12]2[N:11]=[C:10]([CH:27]2[CH2:32][CH2:31][CH:30]([CH2:33][C:34]([O:36][CH2:37][CH3:38])=[O:35])[CH2:29][CH2:28]2)[CH:9]=1.[Br:49]N1C(=O)CCC1=O>C(#N)C>[CH3:44][Si:43]([CH3:46])([CH3:45])[CH2:42][CH2:41][O:40][CH2:39][N:7]([CH2:6][O:5][CH2:4][CH2:3][Si:2]([CH3:1])([CH3:47])[CH3:48])[C:8]1[N:13]2[N:14]=[CH:15][C:16]([C:17]3[CH:18]=[N:19][C:20]4[C:25]([CH:26]=3)=[CH:24][CH:23]=[CH:22][CH:21]=4)=[C:12]2[N:11]=[C:10]([CH:27]2[CH2:32][CH2:31][CH:30]([CH2:33][C:34]([O:36][CH2:37][CH3:38])=[O:35])[CH2:29][CH2:28]2)[C:9]=1[Br:49]

Participants

4

Reactant 2

HCID 67184N-bromobutanimideHCID 66738318HCID 66738318, compound

Product 1

HCID 66733730(4-{7-[Bis-(2-trimethylsilanyl-ethoxymethyl)-amino]-6-bromo-3-quinolin-3-yl-pyrazolo[1,5-a]pyrimidin-5-yl}-cyclohexyl)-acetic acid ethyl esterYield 93%

Reagents, catalysts & solvents 1

HCID 6342AcetonitrileSolvent

Procedure

To a 25 mL roundbottom flask was charged ethyl 2-(4-(7-(bis((2-(trimethylsilyl)ethoxy)-methyl)amino)-3-(quinolin-3-yl)pyrazolo[1,5-a]pyrimidin-5-yl)cyclohexyl)acetate (198 mg, 287 μmol) and acetonitrile (10 mL). To this solution was added N-bromosuccinimide (56 mg, 316 μmol). The resulting reaction mixture was stirred at room temperature for 1 hour. The reaction mixture was concentrated in vacuo and the resulting oil was then purified via silica gel chromatography (0% to 30% ethyl acetate in hexanes gradient) to yield ethyl 2-(4-(7-(bis((2-(trimethylsilyl)ethoxy)methyl)amino)-6-bromo-3-(quinolin-3-yl)pyrazolo[1,5-a]pyrimidin-5-yl)cyclohexyl)acetate (205 mg, 266 μmol, 93% yield) as yellow oil.

Workup

  1. customThe resulting reaction mixture
  2. concentrationThe reaction mixture was concentrated in vacuo
  3. customthe resulting oil was then purified via silica gel chromatography (0% to 30% ethyl acetate in hexanes gradient)

Sources & evidence

ORD record
ord-1a893cd38bcf47af9fae2e7d3a4c989b
Source dataset
uspto-grants-2013_11
Patent number
US08591943B2

Reaction notes

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