Potassium Carbonate → HCID 53316516, compound

HRID 855004Notes

Reaction equation

HRID 855004 reaction equation
[Cl:1][C:2]1[CH:3]=[C:4]2[C:9](=[C:10](I)[CH:11]=1)[O:8][CH:7]([C:13]([F:16])([F:15])[F:14])[C:6]([C:17]([O-:19])=[O:18])=[CH:5]2.[F:20][C:21]1[CH:26]=[CH:25][C:24](B(O)O)=[CH:23][CH:22]=1.C([O-])([O-])=O.[K+].[K+]>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>[Cl:1][C:2]1[CH:3]=[C:4]2[C:9](=[C:10]([C:24]3[CH:25]=[CH:26][C:21]([F:20])=[CH:22][CH:23]=3)[CH:11]=1)[O:8][CH:7]([C:13]([F:16])([F:15])[F:14])[C:6]([C:17]([OH:19])=[O:18])=[CH:5]2

Participants

5

Reactant 3

HCID 11430Potassium CarbonateHCID 2856454-Fluorophenylboronic acidHCID 86599478HCID 86599478, compound

Product 1

HCID 53316516HCID 53316516, compoundYield 34%

Reagents, catalysts & solvents 1

HCID 178418397HCID 178418397, compoundCatalyst

Conditions

Temperature
100 °C

Procedure

To 0.400 g (0.428 mmole) of Wang resin 6-chloro-8-iodo-2-(trifluoromethyl)-2H-chromene-3-carboxylate was added 50 mg (0.043 mmole) tetrakis(triphenylphosphine)palladium(0), 0.180 g (1.285 mmole) 4-fluorophenylboronic acid, 0.857 mL K2CO3 (2M soln degassed), and 4 mL degassed DMF. The reaction mixture was heated to 100° C. for 18 hr. The reaction mixture was transferred and washed as follows: DMF (×5), H2O (×5), MeOH (×5), and CH2Cl2 (×5). The resin was treated with 2 mL (TFA:CH2CL2, 1:1) for 30 minutes. The filtrate was collected and treatment was repeated. The resin was washed with CH2Cl2 (×2) and all filtrates were combined and concd. The resulting oil was purified using reverse phase chromatography to afford 0.055 g (34%) of a yellow crystalline solid: 1H NMR (CDCl3/400 MHz) 5.66 (q, 1H, J=6.8 Hz), 7.10-7.15 (m, 2H), 7.26 (d, 1H, J=2.4 Hz), 7.37 (d, 1H, J=2.4 Hz), 7.42-7.47 (m, 2H), 7.90 (s, 1H); MS (ES+) 373 (M+1, 100); HRMS (ES−) m/z calcd for (C17H9O3ClF4) 371.0093, found 371.0067.

Workup

  1. customdegassed DMF
  2. washwashed
  3. additionThe resin was treated with 2 mL (TFA:CH2CL2, 1:1) for 30 minutes
  4. customThe filtrate was collected
  5. washThe resin was washed with CH2Cl2 (×2)
  6. customThe resulting oil was purified

Sources & evidence

ORD record
ord-f12766a3e41d488da02232621a57a46b
Source dataset
uspto-grants-2007_08
Patent number
US07259266B2

Reaction notes

Loading…