Cesium carbonate → HCID 86661237, compound

HRID 1918917Notes

Reaction equation

[Si:1]([O:8][CH2:9][CH2:10][N:11]1[CH:15]=[CH:14][C:13]([NH2:16])=[N:12]1)([C:4]([CH3:7])([CH3:6])[CH3:5])([CH3:3])[CH3:2].Br[C:18]1[C:19](=[O:26])[N:20]([CH3:25])[CH:21]=[C:22]([Br:24])[CH:23]=1.CC1(C)C2C(=C(P(C3C=CC=CC=3)C3C=CC=CC=3)C=CC=2)OC2C(P(C3C=CC=CC=3)C3C=CC=CC=3)=CC=CC1=2.C([O-])([O-])=O.[Cs+].[Cs+]>O1CCOCC1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.[Pd].[Pd]>[Br:24][C:22]1[CH:23]=[C:18]([NH:16][C:13]2[CH:14]=[CH:15][N:11]([CH2:10][CH2:9][O:8][Si:1]([C:4]([CH3:7])([CH3:5])[CH3:6])([CH3:3])[CH3:2])[N:12]=2)[C:19](=[O:26])[N:20]([CH3:25])[CH:21]=1

Participants

Conditions

Temperature: 120 °C

Procedure

A mixture of 1-(2-(tert-butyldimethylsilyloxy)ethyl)-1H-pyrazol-3-amine 116b (1.2 g, 5 mmol), 3,5-dibromo-1-methylpyridin-2(1H)-one (1.3 g, 5 mmol), XantPhos (300 mg, 0.5 mmol), Pd2(dba)3 (460 mg, 0.5 mmol) and Cs2CO3 (4 g, 2.5 mmol) in dioxane (30 mL) was heated in a sealed tube at 120° C. for 2 h under nitrogen. After reaction the mixture was filtered and the filtrated was evaporated in vacuo to give a yellow solid, which was then washed with ethyl acetate (6 mL×3) to give 163a as a yellow solid (0.80 g, 38%) and used without further purification. MS: (M+H)+ 427.

Workup

customAfter reaction the mixture
filtrationwas filtered
customthe filtrated was evaporated in vacuo
customto give a yellow solid, which
washwas then washed with ethyl acetate (6 mL×3)

Sources & evidence

ORD record: ord-28b0dce8e131471ba2ebcff5524ceb87
Source dataset: uspto-grants-2013_12
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08618107B2

Reaction notes

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