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Dimethylformamide → (S)-Methyl 2-(7-(4-(allyloxy)-4-methylpiperidin-1-yl)-2-(5'-fluoro-2'-hydroxy-[1,1'-biphenyl]-3-yl)-5-methylpyrazolo[1,5-a]pyrimidin-6-yl)-2-(tert-butoxy)acetate

HRID 1400741
Notes
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Reaction equation

HRID 1400741 reaction equation
[CH2:1]([O:4][C:5]1([CH3:38])[CH2:10][CH2:9][N:8]([C:11]2[N:16]3[N:17]=[C:18]([C:20]4[CH:25]=[CH:24][CH:23]=[C:22](Br)[CH:21]=4)[CH:19]=[C:15]3[N:14]=[C:13]([CH3:27])[C:12]=2[C@H:28]([O:33][C:34]([CH3:37])([CH3:36])[CH3:35])[C:29]([O:31][CH3:32])=[O:30])[CH2:7][CH2:6]1)[CH:2]=[CH2:3].[F:39][C:40]1[CH:41]=[CH:42][C:43]([OH:49])=[C:44](B(O)O)[CH:45]=1.CN(C=O)C.C([O-])([O-])=O.[Na+].[Na+]>CCOC(C)=O.C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1>[CH2:1]([O:4][C:5]1([CH3:38])[CH2:10][CH2:9][N:8]([C:11]2[N:16]3[N:17]=[C:18]([C:20]4[CH:21]=[C:22]([C:42]5[CH:41]=[C:40]([F:39])[CH:45]=[CH:44][C:43]=5[OH:49])[CH:23]=[CH:24][CH:25]=4)[CH:19]=[C:15]3[N:14]=[C:13]([CH3:27])[C:12]=2[C@H:28]([O:33][C:34]([CH3:37])([CH3:36])[CH3:35])[C:29]([O:31][CH3:32])=[O:30])[CH2:7][CH2:6]1)[CH:2]=[CH2:3]
ParticipantsConditionsProcedureWorkupSources & evidenceReaction notes

Participants

7

Reactant 4

HCID 6228DimethylformamideHCID 10340Sodium CarbonateHCID 37724765-Fluoro-2-hydroxyphenylboronic acidHCID 86710779(S)-methyl 2-(7-(4-(allyloxy)-4-methylpiperidin-1-yl)-2-(3-bromophenyl)-5-methylpyrazolo[1,5-a]pyrimidin-6-yl)-2-(tert-butoxy)acetate

Product 1

HCID 86710797
(S)-Methyl 2-(7-(4-(allyloxy)-4-methylpiperidin-1-yl)-2-(5'-fluoro-2'-hydroxy-[1,1'-biphenyl]-3-yl)-5-methylpyrazolo[1,5-a]pyrimidin-6-yl)-2-(tert-butoxy)acetate
Yield 75.1%

Reagents, catalysts & solvents 2

HCID 178418397HCID 178418397, compoundCatalystHCID 8857Ethyl AcetateSolvent

Conditions

Temperature
90 °C

Procedure

To (S)-methyl 2-(7-(4-(allyloxy)-4-methylpiperidin-1-yl)-2-(3-bromophenyl)-5-methylpyrazolo[1,5-a]pyrimidin-6-yl)-2-(tert-butoxy)acetate (0.24 g, 0.41 mmol, 1 equiv), (5-fluoro-2-hydroxyphenyl)boronic acid (96 mg, 0.62 mmol, 1.5 equiv), and Pd(PPh3)4 (47 mg, 0.041 mmol, 0.1 equiv) was added DMF (4.1 mL that had been degassed by sparging with nitrogen for 10 min) Na2CO3 (0.41 mL of a 2 M aqueous solution, 0.82 mmol, 2 equiv) was added and the reaction was heated to 90° C. for 3 h. Upon cooling to ambient temperature, the reaction was diluted with EtOAc and washed with water. The EtOAc layer was dried (Na2SO4) and concentrated in vacuo. The crude product was purified by flash column chromatography (0-60% acetone in hexane) to provide the product as a yellow foam (0.19 g, 75%). 1H NMR (400 MHz, CDCl3) δ 8.13-8.08 (m, 1H), 8.05-8.00 (m, 1H), 7.67-7.48 (m, 3H), 7.09-6.94 (m, 4H), 6.07-5.92 (m, 1H), 5.45-5.36 (m, 1H), 5.22-5.07 (m, 2H), 4.04-3.97 (m, 2H), 3.81-3.77 (m, 3H), 3.77-3.74 (m, 4H), 2.74-2.65 (m, 3H), 2.08-1.94 (m, 3H), 1.80-1.68 (m, 1H), 1.36 (s, 3H), 1.24 (s, 9H). LCMS (M+1)=617.35.

Workup

  1. additionwas added
  2. temperatureUpon cooling to ambient temperature
  3. washwashed with water
  4. dry with materialThe EtOAc layer was dried (Na2SO4)
  5. concentrationconcentrated in vacuo
  6. customThe crude product was purified by flash column chromatography (0-60% acetone in hexane)

Sources & evidence

ORD record
ord-797f7f59ca9d486781ce794bc68ea62a
Source dataset
uspto-grants-2014_12
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US08906929B2

Reaction notes

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On this pageParticipantsConditionsProcedureWorkupSources & evidenceReaction notes