3-Nitrophenylboronic Acid → HCID 89629882, compound

HRID 882152Notes

Reaction equation

Cl[C:2]1[C:3]2[CH:10]=[CH:9][NH:8][C:4]=2[N:5]=[CH:6][N:7]=1.[N+:11]([C:14]1[CH:15]=[C:16](B(O)O)[CH:17]=[CH:18][CH:19]=1)([O-:13])=[O:12].C(=O)([O-])[O-].[Na+].[Na+].CCOC(C)=O>CN(C=O)C.C1C=CC(P(C2C=CC=CC=2)[C-]2C=CC=C2)=CC=1.C1C=CC(P(C2C=CC=CC=2)[C-]2C=CC=C2)=CC=1.Cl[Pd]Cl.[Fe+2].C(Cl)Cl>[N+:11]([C:14]1[CH:19]=[C:18]([C:2]2[C:3]3[CH:10]=[CH:9][NH:8][C:4]=3[N:5]=[CH:6][N:7]=2)[CH:17]=[CH:16][CH:15]=1)([O-:13])=[O:12]

Participants

Conditions

Temperature: 115 °C

Procedure

A mixture of 4-chloro-7H-pyrrolo[2,3-d]pyrimidine (10 g, 65 mmol), 3-nitrophenylboronic acid (17.4 g, 104 mmol), Pd(dppf)Cl2—CH2Cl2 (2.13 g, 2.60 mmol), and 2 M sodium carbonate (81.5 mL, 163 mmol) in DMF (217 mL) was degassed for 10 minutes and then heated at 115° C. for 1 hour. After the reaction mixture was cooled to room temperature, water (700 mL) and sorbitol (20 g) were added which led to the precipitation of the desired product. After 30 minutes of stirring, the precipitate was filtered to give the crude product which was then slurried from EtOAc (100 mL) and hexanes (150 mL) for 30 minutes. Filtration of the precipitate gave 4-(3-nitrophenyl)-7H-pyrrolo[2,3-d]pyrimidine. LRMS (ESI) calc'd for C12H9N4O2 [M+H]+: 241, found 241.

Workup

customwas degassed for 10 minutes
temperatureAfter the reaction mixture was cooled to room temperature
additionwater (700 mL) and sorbitol (20 g) were added which
customled to the precipitation of the desired product
filtrationthe precipitate was filtered
customto give the crude product which
filtrationFiltration of the precipitate

Sources & evidence

ORD record: ord-36f54bd4f48e4f7c85035297cf69b2a2
Source dataset: uspto-grants-2015_03
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08993756B2

Reaction notes

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