Ammonia methanol → 4,4-Difluoro-9-(3-hydroxy-3-methyl-but-1-ynyl)-4,5-dihydro-6-oxa-3-thia-1-aza-benzo[e]azulene-2-carboxylic acid amide

HRID 575115Notes

Reaction equation

HRID 575115 reaction equation
C[O:2][C:3]([C:5]1[S:6][C:7]2[C:8]([F:26])([F:25])[CH2:9][O:10][C:11]3[CH:18]=[CH:17][C:16]([C:19]#[C:20][C:21]([OH:24])([CH3:23])[CH3:22])=[CH:15][C:12]=3[C:13]=2[N:14]=1)=O.[NH3:27].CO>C1COCC1>[F:25][C:8]1([F:26])[C:7]2[S:6][C:5]([C:3]([NH2:27])=[O:2])=[N:14][C:13]=2[C:12]2[CH:15]=[C:16]([C:19]#[C:20][C:21]([OH:24])([CH3:23])[CH3:22])[CH:17]=[CH:18][C:11]=2[O:10][CH2:9]1

Participants

4

Reactant 2

HCID 21705897Ammonia methanolHCID 866931434,4-Difluoro-9-(3-hydroxy-3-methyl-but-1-ynyl)-4,5-dihydro-6-oxa-3-thia-1-aza-benzo[e]azulene-2-carboxylic acid methyl ester

Product 1

HCID 717147314,4-Difluoro-9-(3-hydroxy-3-methyl-but-1-ynyl)-4,5-dihydro-6-oxa-3-thia-1-aza-benzo[e]azulene-2-carboxylic acid amideYield 30%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

To a solution of 4,4-Difluoro-9-(3-hydroxy-3-methyl-but-1-ynyl)-4,5-dihydro-6-oxa-3-thia-1-aza-benzo[e]azulene-2-carboxylic acid methyl ester (86 mg, 0.227 mmol) in THF (5 mL) at room temperature, NH3/CH3OH (self-made, 5 mL) was added. The mixture was stirred at room temperature for 3 h, then concentrated to give a residue which was purified by flash column chromatography (silica gel, EtOAc in hexane from 0 to 50%) to give 4,4-Difluoro-9-(3-hydroxy-3-methyl-but-1-ynyl)-4,5-dihydro-6-oxa-3-thia-1-aza-benzo[e]azulene-2-carboxylic acid amide as an off-white solid (25 mg, 30%). 1H NMR (400 MHz, DMSO-d6): δ 8.76 (s, 1H), 8.60 (d, J=2.1 Hz, 1H), 8.18 (s, 1H), 7.46 (dd, J1=8.4 Hz, J2=2.2 Hz, 1H), 7.22 (d, J=8.4 Hz, 1H), 5.49 (s, 1H), 4.75 (t, J=10.7 Hz, 2H), 1.49 (s, 6H); LC-MS (ESI & APCI): 365.4 (M+1).

Workup

  1. concentrationconcentrated
  2. customto give a residue which
  3. customwas purified by flash column chromatography (silica gel, EtOAc in hexane from 0 to 50%)

Sources & evidence

ORD record
ord-fef5ac7ef5e941219f91856f20cf1f58
Source dataset
uspto-grants-2015_05
Patent number
US09034866B2

Reaction notes

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