Dimethylformamide → 3-(2-cyano-6,7-dihydropyrido[3,2-b]thieno[2,3-d]oxepin-9-yl)-2-(2,4-difluorophenyl)-2H-1,2,4-triazole

HRID 84680Notes

Reaction equation

HRID 84680 reaction equation
Cl[C:2]1[CH:3]=[CH:4][C:5]2[O:6][CH2:7][CH2:8][C:9]3[CH:15]=[C:14]([C:16]4[N:17]([C:21]5[CH:26]=[CH:25][C:24]([F:27])=[CH:23][C:22]=5[F:28])[N:18]=[CH:19][N:20]=4)[S:13][C:10]=3[C:11]=2[N:12]=1.[CH3:29][N:30](C)C=O>[C-]#N.[Zn+2].[C-]#N.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:2]1[CH:3]=[CH:4][C:5]2[O:6][CH2:7][CH2:8][C:9]3[CH:15]=[C:14]([C:16]4[N:17]([C:21]5[CH:26]=[CH:25][C:24]([F:27])=[CH:23][C:22]=5[F:28])[N:18]=[CH:19][N:20]=4)[S:13][C:10]=3[C:11]=2[N:12]=1)#[N:30]

Participants

5

Reactant 2

HCID 6228DimethylformamideHCID 579003099-Chloro-2-[2-(2,4-difluoro-phenyl)-2H-[1,2,4]triazol-3-yl]-4,5-dihydro-6-oxa-1-thia-10-aza-benzo[e]azulene

Product 1

HCID 579005063-(2-cyano-6,7-dihydropyrido[3,2-b]thieno[2,3-d]oxepin-9-yl)-2-(2,4-difluorophenyl)-2H-1,2,4-triazoleYield 60%

Reagents, catalysts & solvents 2

HCID 11186Zinc cyanide (Zn(CN)2)CatalystHCID 178418397HCID 178418397, compoundCatalyst

Conditions

Temperature
200 °C

Procedure

To solution containing 3-(2-chloro-6,7-dihydropyrido[3,2-b]thieno[2,3-d]oxepin-9-yl)-2-(2,4-difluorophenyl)-2H-1,2,4-triazole (0.030 g, 0.072 mmol), zinc cyanide (16.9 mg, 0.144 mmol), and tetrakis(triphenylphosphine)palladium(0) (4.16 mg, 0.00360 mmol) in N,N-dimethylformamide (1.00 mL, 12.9 mmol) was evacuated then back-filled with nitrogen. The reaction mixture was heated in microwave to 200° C. for 10 min. The reaction mixture was quenched with sat.NH4Cl then extracted EtOAc (3×). The crude product was purified by column chromatography (EtOAc/Hex) (eluted 50% EtOAc) to give 366 (60% yield). MS: (ESI+)=408.0

Workup

  1. customwas evacuated
  2. additionthen back-filled with nitrogen
  3. customThe reaction mixture was quenched
  4. customThe crude product was purified by column chromatography (EtOAc/Hex) (eluted 50% EtOAc)

Sources & evidence

ORD record
ord-eb4ee33259fa4b959f2cd9cc45cb7c27
Source dataset
uspto-grants-2014_09
Patent number
US08846762B2

Reaction notes

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