1-Hydroxybenzotriazole → N-(2-hydroxy-2-methylpropyl)-2-(1-isopropyl-1H-1,2,4-triazol-5-yl)-4,5-dihydrobenzo[b]pyrazolo[1,5-d][1,4]oxazepine-9-carboxamide

HRID 2044342Notes

Reaction equation

HRID 2044342 reaction equation
[CH:1]([N:4]1[C:8]([C:9]2[CH:10]=[C:11]3[N:17]([N:18]=2)[C:16]2[CH:19]=[C:20]([C:23](O)=[O:24])[CH:21]=[CH:22][C:15]=2[O:14][CH2:13][CH2:12]3)=[N:7][CH:6]=[N:5]1)([CH3:3])[CH3:2].CCN(C(C)C)C(C)C.CN(C(ON1N=NC2C=CC=NC1=2)=[N+](C)C)C.F[P-](F)(F)(F)(F)F.C1C=CC2N(O)N=NC=2C=1.[NH2:69][CH2:70][C:71]([CH3:74])([OH:73])[CH3:72]>CN(C=O)C>[OH:73][C:71]([CH3:74])([CH3:72])[CH2:70][NH:69][C:23]([C:20]1[CH:21]=[CH:22][C:15]2[O:14][CH2:13][CH2:12][C:11]3[N:17]([N:18]=[C:9]([C:8]4[N:4]([CH:1]([CH3:2])[CH3:3])[N:5]=[CH:6][N:7]=4)[CH:10]=3)[C:16]=2[CH:19]=1)=[O:24]

Participants

7

Reactant 5

HCID 757711-HydroxybenzotriazoleHCID 81531DiisopropylethylamineHCID 951022-Propanol, 1-amino-2-methyl-HCID 9886157Methanaminium, N-((dimethylamino)(3H-1,2,3-triazolo(4,5-b)pyridin-3-yloxy)methylene)-N-methyl-, hexafluorophosphate(1-) (1:1)HCID 582047582-(2-Isopropyl-2H-[1,2,4]triazol-3-yl)-4,5-dihydro-6-oxa-1,10b-diaza-benzo[e]azulene-9-carboxylic acid

Product 1

HCID 68355376N-(2-hydroxy-2-methylpropyl)-2-(1-isopropyl-1H-1,2,4-triazol-5-yl)-4,5-dihydrobenzo[b]pyrazolo[1,5-d][1,4]oxazepine-9-carboxamideYield 67.3%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

2-(2-Isopropyl-2H-[1,2,4]triazol-3-yl)-4,5-dihydro-6-oxa-1,10b-diaza-benzo[e]azulene-9-carboxylic acid (0.2 g, 0.59 mmol) was suspended in DMF (5 mL) and DIPEA (0.21 mL, 1.2 mmol) added. The resultant solution was treated with HATU (0.23 g, 0.6 mmol) and HOBT (81 mg, 0.6 mmol) before the addition of 1-amino-2-methyl-propan-2-ol (52.5 mg, 0.59 mmol) then stirred for 18 h at RT. The reaction mixture was concentrated in vacuo and the resultant residue partitioned between DCM and water. The aqueous layer was extracted three times with DCM and the combined organic extracts washed with water, dried (Na2SO4), filtered and concentrated in vacuo. The resultant residue was subjected to flash chromatography (SiO2, gradient 0 to 10% MeOH in ethyl acetate) and recrystallistion from ethyl acetate to give 116 (163 mg, 67%). 1H NMR (CDCl3, 400 MHz): δ 8.46 (d, J=2.2 Hz, 1H); 7.94 (s, 1H); 7.72 (dd, J=8.4, 2.2 Hz, 1H); 7.22 (d, J=8.4 Hz, 1H); 6.86 (s, 1H); 6.66 (s, 1H); 5.74-5.61 (m, 1H); 4.57 (t, J=5.7 Hz, 2H); 3.50 (d, J=5.9 Hz, 2H); 3.22 (t, J=5.7 Hz, 2H); 2.18 (s, 1H); 1.59 (d, J=6.6 Hz, 6H); 1.31 (s, 6H). LCMS: RT=9.53 min, M+H+=411

Workup

  1. concentrationThe reaction mixture was concentrated in vacuo
  2. customthe resultant residue partitioned between DCM and water
  3. extractionThe aqueous layer was extracted three times with DCM
  4. washthe combined organic extracts washed with water
  5. dry with materialdried (Na2SO4)
  6. filtrationfiltered
  7. concentrationconcentrated in vacuo

Sources & evidence

ORD record
ord-acaef077cc1049be88a1a2cbd69afd5c
Source dataset
uspto-grants-2013_11
Patent number
US08586574B2

Reaction notes

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