2-Methylbut-3-yne-1,2-diol → (+/-)-9-(3,4-Dihydroxy-3-methyl-but-1-ynyl)-8-fluoro-4,5-dihydro-6-oxa-3-thia-1-aza-benzo azulene-2-carboxylic acid amide

HRID 575088Notes

Reaction equation

HRID 575088 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.[CH3:20][C:21]([OH:26])([C:24]#[CH:25])[CH2:22][OH:23]>CS(C)=O.C(N(CC)CC)C.O.Cl[Pd](Cl)([P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1)[P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1>[OH:26][C:21]([CH3:20])([CH2:22][OH:23])[C:24]#[C:25][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

Participants

7

Reactant 2

HCID 221369052-Methylbut-3-yne-1,2-diolHCID 866930599-Bromo-8-fluoro-4,5-dihydro-[1]benzoxepino[5,4-d]thiazole-2-carboxamide

Product 1

HCID 86693117(+/-)-9-(3,4-Dihydroxy-3-methyl-but-1-ynyl)-8-fluoro-4,5-dihydro-6-oxa-3-thia-1-aza-benzo azulene-2-carboxylic acid amide

Reagents, catalysts & solvents 4

HCID 178418476HCID 178418476, compoundCatalystHCID 679Dimethyl SulfoxideSolventHCID 962WaterSolventHCID 8471TriethylamineSolvent

Procedure

The title compound was prepared according to a procedure similar to that described in Procedure G. Into a 8-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), 2-methylbut-3-yne-1,2-diol (200 mg, 2.00 mmol, 3.50 equiv) and Pd(PPh3)2Cl2 (40 mg, 0.06 mmol, 0.10 equiv) in DMSO (1 mL) and triethylamine (1 mL). The final reaction mixture was irradiated with microwave radiation for 1 h at 70° C. The resulting solution was diluted with 20 mL, of water. The solids were collected by filtration and washed by acetonitrile (10 mL). This resulted in 30 mg (14%) of 9-(3,4-Dihydroxy-3-methyl-but-1-ynyl)-8-fluoro-4,5-dihydro-6-oxa-3-thia-1-aza-benzo[e]azulene-2-carboxylic acid amide as a light brown solid. LC-MS (ES, m/z): 363[M+H]+; 1H-NMR (300 MHz, DMSO-d6, ppm) δ 8.64 (d, 1H), 8.438 (br s, 1H), 7.873 (br s, 1H), 6.997 (d, 1H), 5.397 (s, 1H), 4.971 (t, 1H), 4.383 (t, 2H), 3.510-3.380 (m, 4H), 1.426 (s, 3H).

Workup

  1. customInto a 8-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. filtrationThe solids were collected by filtration
  7. washwashed by acetonitrile (10 mL)
  8. customThis resulted in 30 mg (14%) of 9-(3,4-Dihydroxy-3-methyl-but-1-ynyl)-8-fluoro-4,5-dihydro-6-oxa-3-thia-1-aza-benzo[e]azulene-2-carboxylic acid amide as a light brown solid

Sources & evidence

ORD record
ord-53de05fecc944ae6b712fd6aa50d793f
Source dataset
uspto-grants-2015_05
Patent number
US09034866B2

Reaction notes

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