Potassium Carbonate → methyl (4-{3-cyano-5-[1-(tetrahydro-2H-pyran-2-yl)-1H-1,2,4-triazol-3-yl]-4-vinyl-2-thienyl}pyridin-2-yl)carbamate

HRID 2402087Notes

Reaction equation

HRID 2402087 reaction equation
Br[C:2]1[C:3]([C:29]#[N:30])=[C:4]([C:18]2[CH:23]=[CH:22][N:21]=[C:20]([NH:24][C:25](=[O:28])[O:26][CH3:27])[CH:19]=2)[S:5][C:6]=1[C:7]1[N:11]=[CH:10][N:9]([CH:12]2[CH2:17][CH2:16][CH2:15][CH2:14][O:13]2)[N:8]=1.[CH:31]([B-](F)(F)F)=[CH2:32].[K+].C(=O)([O-])[O-].[K+].[K+]>CN(C)C=O.O.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>[C:29]([C:3]1[C:2]([CH:31]=[CH2:32])=[C:6]([C:7]2[N:11]=[CH:10][N:9]([CH:12]3[CH2:17][CH2:16][CH2:15][CH2:14][O:13]3)[N:8]=2)[S:5][C:4]=1[C:18]1[CH:23]=[CH:22][N:21]=[C:20]([NH:24][C:25](=[O:28])[O:26][CH3:27])[CH:19]=1)#[N:30]

Participants

7

Reactant 3

HCID 11430Potassium CarbonateHCID 23679353Potassium vinyltrifluoroborateHCID 68095977Methyl (4-{4-bromo-3-cyano-5-[1-(tetrahydro-2H-pyran-2-yl)-1H-1,2,4-triazol-3-yl]-2-thienyl}pyridin-2-yl)carbamate

Product 1

HCID 68100370methyl (4-{3-cyano-5-[1-(tetrahydro-2H-pyran-2-yl)-1H-1,2,4-triazol-3-yl]-4-vinyl-2-thienyl}pyridin-2-yl)carbamate

Reagents, catalysts & solvents 3

HCID 178418397HCID 178418397, compoundCatalystHCID 962WaterSolventHCID 6228DimethylformamideSolvent

Conditions

Temperature
140 °C

Procedure

A mixture of methyl (4-{4-bromo-3-cyano-5-[1-(tetrahydro-2H-pyran-2-yl)-1H-1,2,4-triazol-3-yl]-2-thienyl}pyridin-2-yl)carbamate (1.14 g, 2.33 mmol), potassium vinyltrifluoroborate (0.624 g, 4.66 mmol), tetrakis(triphenylphosphine)platinum (0) (0.145 g, 0.116 mmol) and potassium carbonate (0.967 g, 7.00 mmol) in N,N-dimethylformamide (14.0 mL) and water (5.0 mL) in a microwave vial was heated under nitrogen atmosphere at 140° C. in a microwave for 15 min. The mixture was cooled to room temperature, quenched with water, extracted with DCM, washed with water then brine, dried over Na2SO4, filtered and rotavaped to give a crude product. Purification on a silica gel column using MeOH/DCM (0/100 to 5/95) afforded the desired product (1.16 g, with PPh3 and O═PPh3 contaminated) with Rf on TLC (MeOH/DCM 5/95) of 0.4, and de-carbamide product (0.627 g, yield 58%). LC/MS: (FA) ES+ 437. 1H NMR (400 MHz, d-chloroform) δ 8.52 (s, 1H), 8.45 (s, 1H), 8.41 (m, 1H), 8.33 (s, 1H), 7.51-7.59 (m, 1H), 7.46-7.49 (m, 1H), 6.28-6.33 (m, 1H), 5.66-5.69 (m, 1H), 5.51-5.54 (m, 1H), 4.09-4.12 (m, 1H), 3.86 (s, 3H), 3.75-3.78 (m, 1H), 2.00-2.20 (m, 3H), 1.68-1.77 (m, 3H).

Workup

  1. temperatureThe mixture was cooled to room temperature
  2. customquenched with water
  3. extractionextracted with DCM
  4. washwashed with water
  5. dry with materialbrine, dried over Na2SO4
  6. filtrationfiltered
  7. customto give a crude product
  8. customPurification on a silica gel column

Sources & evidence

ORD record
ord-dc419a1e33be4186bfefa8f33b167776
Source dataset
uspto-grants-2014_08
Patent number
US08796271B2

Reaction notes

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