Sodium Carbonate → HCID 68891491, compound

HRID 2218766Notes

Reaction equation

HRID 2218766 reaction equation
Br[CH:2]=[C:3]1[C:9]2[CH:10]=[CH:11][C:12]([F:14])=[CH:13][C:8]=2[CH2:7][O:6][C:5]2[CH:15]=[C:16]([F:19])[CH:17]=[CH:18][C:4]1=2.CC1(C)C(C)(C)OB([C:28]2[CH:37]=[CH:36][C:31]3[NH:32][C:33](=[O:35])[NH:34][C:30]=3[CH:29]=2)O1.C([O-])([O-])=O.[Na+].[Na+].O1CCOCC1>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.CO>[F:19][C:16]1[CH:17]=[CH:18][C:4]2[C:3](=[CH:2][C:28]3[CH:37]=[CH:36][C:31]4[NH:32][C:33](=[O:35])[NH:34][C:30]=4[CH:29]=3)[C:9]3[CH:10]=[CH:11][C:12]([F:14])=[CH:13][C:8]=3[CH2:7][O:6][C:5]=2[CH:15]=1

Participants

7

Reactant 4

HCID 10340Sodium CarbonateHCID 312751,4-DioxaneHCID 438110655-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-benzo[d]imidazol-2(3H)-oneHCID 67335876HCID 67335876, compound

Product 1

HCID 68891491HCID 68891491, compoundYield 27.1%

Reagents, catalysts & solvents 2

HCID 178418397HCID 178418397, compoundCatalystHCID 887MethanolSolvent

Conditions

Temperature
-26 °C

Procedure

Following procedures essentially as described in Example 219, mix 11-bromomethylene-3,8-difluoro-6,11-dihydro-dibenzo[b,e]oxepine (E-isomer, 326 mg, 1.0 mmol), 5-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-1,3-dihydro-benzoimidazol-2-one (250 mg, 0.961 mmol), Na2CO3 (2M in water, 1.20 mL, 2.40 mmol), dioxane (7 mL), and Pd(PPh3)4 (58 mg, 0.051 mmol). Purify the crude product on silica gel (12 g) eluting with 50% to 70% THF/hexanes to afford two lots of yellow solid weighing 180 mg and 151 mg. Dissolve the 180 mg lot in boiling MeOH (20 mL), concentrate to 10 mL and cool to −26° C. to precipitate 165 mg (46%) of the title compound as a white solid. Repeat the recrystallization on the 151 mg lot to afford 98 mg (27%) of the title compound as a white solid. HPLC (ISO80-10) t=2.38 min, 97%; MS [ES] 375 (M−H), 377 (M+H); 1H-NMR (DMSO-d6) δ 10.57 (s, 1H), 10.46 (s, 1H), 7.57 (dd, 1H, J=8.4, 7.0 Hz), 7.49 (dd, 1H, J=9.2, 2.6 Hz), 7.08 (td, 1H, J=12.5, 4.3 Hz), 7.01 (d, 1H, J=5.7 Hz), 6.97 (s, 1H), 6.79 (td, 1H, J=12.0, 4.2 Hz), 6.73 (d, 1H, J=8.4 Hz), 6.67 (d, 1H, J=8.4 Hz), 6.61 (dd, 1H, J=10.6, 2.6 Hz), 6.52 (s, 1H), 5.78-4.78 (br d, 2H).

Workup

  1. customPurify the crude product on silica gel (12 g)
  2. washeluting with 50% to 70% THF/hexanes
  3. customto afford two lots of yellow solid
  4. dissolutionDissolve the 180 mg lot
  5. concentrationconcentrate to 10 mL
  6. customto precipitate 165 mg (46%) of the title compound as a white solid
  7. customRepeat the recrystallization on the 151 mg lot

Sources & evidence

ORD record
ord-7327163be3cf435088ad13d7c84446a6
Source dataset
uspto-grants-2008_08
Patent number
US07411072B2

Reaction notes

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