1-Fluoro-2-fluoromethyl-3-butyn-2-ol → 8-Fluoro-9-(4-fluoro-3-fluoromethyl-3-hydroxy-but-1-ynyl)-4,5-dihydro-6-oxa-3-thia-1-aza-benzo[e]azulene-2-carboxylic acid amide

HRID 575083Notes

Reaction equation

HRID 575083 reaction equation
Br[C:2]1[C:3]([F:19])=[CH:4][C:5]2[O:14][CH2:13][CH2:12][C:11]3[S:10][C:9]([C:15]([NH2:17])=[O:16])=[N:8][C:7]=3[C:6]=2[CH:18]=1.[F:20][CH2:21][C:22]([CH2:26][F:27])([OH:25])[C:23]#[CH:24]>CS(C)=O.C(N(CC)CC)C.O>[F:19][C:3]1[C:2]([C:24]#[C:23][C:22]([CH2:26][F:27])([OH:25])[CH2:21][F:20])=[CH:18][C:6]2[C:7]3[N:8]=[C:9]([C:15]([NH2:17])=[O:16])[S:10][C:11]=3[CH2:12][CH2:13][O:14][C:5]=2[CH:4]=1

Participants

6

Reactant 2

HCID 184244281-Fluoro-2-fluoromethyl-3-butyn-2-olHCID 866930599-Bromo-8-fluoro-4,5-dihydro-[1]benzoxepino[5,4-d]thiazole-2-carboxamide

Product 1

HCID 866931128-Fluoro-9-(4-fluoro-3-fluoromethyl-3-hydroxy-but-1-ynyl)-4,5-dihydro-6-oxa-3-thia-1-aza-benzo[e]azulene-2-carboxylic acid amide

Reagents, catalysts & solvents 3

HCID 679Dimethyl SulfoxideSolventHCID 962WaterSolventHCID 8471TriethylamineSolvent

Procedure

The title compound was prepared according to a procedure similar to that described in Procedure G. Into a 10-mL sealed tube purged and maintained with an inert atmosphere of nitrogen, was placed a suspension of 9-Bromo-8-fluoro-4,5-dihydro-6-oxa-3-thia-1-aza-benzo[e]azulene-2-carboxylic acid amide (200 mg, 0.58 mmol, 1.00 equiv), 1-fluoro-2-(fluoromethyl)but-3-yn-2-ol (280 mg, 1.75 mmol, 3.00 equiv) and Pd(PPh3)Cl2 (82 mg, 0.20 equiv) in DMSO (0.7 mL) and triethylamine (0.7 mL). The final reaction mixture was irradiated with microwave radiation for 1 h at 70° C. The resulting solution was diluted with 15 mL of water. The resulting solution was extracted with 3×15 mL of dichloromethane and the organic layers combined and dried over anhydrous sodium sulfate and concentrated under vacuum. The residue was applied onto a silica gel column with DCM:MeOH (10:1). This resulted in 72.9 mg (32%) of 8-Fluoro-9-(4-fluoro-3-fluoromethyl-3-hydroxy-but-1-ynyl)-4,5-dihydro-6-oxa-3-thia-1-aza-benzo[e]azulene-2-carboxylic acid amide as a off-white solid. LC-MS: (ES, m/z): 383[M+H]+; 1H-NMR: (400 MHz, CD3OD, ppm) δ 8.735 (d, 1H), 6.875 (d, 1H), 4.559 (d, 4H), 4.400 (t, 2H), 3.450 (t, 2H).

Workup

  1. customInto a 10-mL sealed tube
  2. custompurged
  3. temperaturemaintained with an inert atmosphere of nitrogen
  4. customThe final reaction mixture
  5. customwas irradiated with microwave radiation for 1 h at 70° C
  6. extractionThe resulting solution was extracted with 3×15 mL of dichloromethane
  7. dry with materialdried over anhydrous sodium sulfate
  8. concentrationconcentrated under vacuum
  9. customThis resulted in 72.9 mg (32%) of 8-Fluoro-9-(4-fluoro-3-fluoromethyl-3-hydroxy-but-1-ynyl)-4,5-dihydro-6-oxa-3-thia-1-aza-benzo[e]azulene-2-carboxylic acid amide as a off-white solid

Sources & evidence

ORD record
ord-11970572e0ff4192a9c51f0c6ee17efc
Source dataset
uspto-grants-2015_05
Patent number
US09034866B2

Reaction notes

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