1,4-Dioxane → 6-(2-chloro-4-(1-methylcyclobutoxy)-7-((2-(trimethylsilyl)ethoxy)methyl)-7H-pyrrolo[2,3-d]pyrimidin-5-yl)-2-methylbenzo[d]oxazole

HRID 1487653Notes

Reaction equation

[Cl:1][C:2]1[N:3]=[C:4]([O:20][C:21]2([CH3:25])[CH2:24][CH2:23][CH2:22]2)[C:5]2[C:10](I)=[CH:9][N:8]([CH2:12][O:13][CH2:14][CH2:15][Si:16]([CH3:19])([CH3:18])[CH3:17])[C:6]=2[N:7]=1.[CH3:26][C:27]1[O:28][C:29]2[CH:35]=[C:34](B3OC(C)(C)C(C)(C)O3)[CH:33]=[CH:32][C:30]=2[N:31]=1.P([O-])([O-])([O-])=O.[K+].[K+].[K+].O1CCOCC1>O>[Cl:1][C:2]1[N:3]=[C:4]([O:20][C:21]2([CH3:25])[CH2:24][CH2:23][CH2:22]2)[C:5]2[C:10]([C:34]3[CH:33]=[CH:32][C:30]4[N:31]=[C:27]([CH3:26])[O:28][C:29]=4[CH:35]=3)=[CH:9][N:8]([CH2:12][O:13][CH2:14][CH2:15][Si:16]([CH3:19])([CH3:18])[CH3:17])[C:6]=2[N:7]=1

Participants

Conditions

Temperature: 70 °C

Procedure

To a degassed mixture of 2-chloro-5-iodo-4-(1-methylcyclobutoxy)-7-((2-(trimethylsilyl)ethoxy)methyl)-7H-pyrrolo[2,3-d]pyrimidine (1 equiv), 2-methyl-6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzo[d]oxazole (1.1 equiv) and tripotassium phosphate trihydrorate (3.0 equiv) in a 9:1 mixture of 1,4-dioxane and water (0.45 M) was added palladium 1,1-bis(diphenylphosphion)-ferrocene dicholoride (0.1 equiv). The reaction mixture was stirred at 70° C. for 2 h. The reaction mixture was cooled to room temperature and concentrated. The residue was purified by silica gel chromatography (0-25% ethyl acetate in petroleum ether) to afford the title compound (49% yield) as a yellow solid. MS (ESI) m/z 499.2 [M+H]+.

Workup

temperatureThe reaction mixture was cooled to room temperature
concentrationconcentrated
customThe residue was purified by silica gel chromatography (0-25% ethyl acetate in petroleum ether)

Sources & evidence

ORD record: ord-aca9720b0f154b98967045239521aeab
Source dataset: uspto-grants-2016_08
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US09428509B2

Reaction notes

Loading…