Diisopropylethylamine → 10-(1-tert-butylpiperidin-4-ylthio)-2-(1-isopropyl-1H-1,2,4-triazol-5-yl)-5,6-dihydrobenzo[f]imidazo[1,2-d][1,4]oxazepine

HRID 1530523Notes

Reaction equation

HRID 1530523 reaction equation
Br[C:2]1[CH:3]=[CH:4][C:5]2[O:14][CH2:13][CH2:12][N:11]3[C:7](=[N:8][C:9]([C:15]4[N:16]([CH:20]([CH3:22])[CH3:21])[N:17]=[CH:18][N:19]=4)=[CH:10]3)[C:6]=2[CH:23]=1.[C:24]([N:28]1[CH2:33][CH2:32][CH:31]([SH:34])[CH2:30][CH2:29]1)([CH3:27])([CH3:26])[CH3:25].CC1(C)C2C(=C(P(C3C=CC=CC=3)C3C=CC=CC=3)C=CC=2)OC2C(P(C3C=CC=CC=3)C3C=CC=CC=3)=CC=CC1=2.CCN(C(C)C)C(C)C>O1CCOCC1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.[Pd].[Pd]>[C:24]([N:28]1[CH2:33][CH2:32][CH:31]([S:34][C:2]2[CH:3]=[CH:4][C:5]3[O:14][CH2:13][CH2:12][N:11]4[CH:10]=[C:9]([C:15]5[N:16]([CH:20]([CH3:22])[CH3:21])[N:17]=[CH:18][N:19]=5)[N:8]=[C:7]4[C:6]=3[CH:23]=2)[CH2:30][CH2:29]1)([CH3:27])([CH3:25])[CH3:26]

Participants

7

Reactant 4

HCID 81531DiisopropylethylamineHCID 6360441,1'-(9,9-Dimethyl-9H-xanthene-4,5-diyl)bis(1,1-diphenylphosphine)HCID 5820501010-bromo-2-(1-isopropyl-1H-1,2,4-triazol-5-yl)-5,6-dihydrobenzo[f]imidazo[1,2-d][1,4]oxazepineHCID 866714621-tert-Butylpiperidine-4-thiol

Product 1

HCID 6655859110-(1-tert-butylpiperidin-4-ylthio)-2-(1-isopropyl-1H-1,2,4-triazol-5-yl)-5,6-dihydrobenzo[f]imidazo[1,2-d][1,4]oxazepine

Reagents, catalysts & solvents 2

HCID 9811564Bis(dibenzylideneacetone)palladiumCatalystHCID 312751,4-DioxaneSolvent

Conditions

Temperature
120 °C

Procedure

A mixture of 9-bromo-2-(2-isopropyl-2H-[1,2,4]triazol-3-yl)-4,5-dihydro-6-oxa-1,3a-diazabenzo[e]azulene (100 mg, 0.27 mmol), 1-tert-butylpiperidine-4-thiol (120 mg, 0.69 mmol), Pd2(dba)3 (24 mg, 10 mol %), XantPhos (31 mg, 20 mol %) and DIPEA (186 μL, 1.07 mmol) in dioxane (3 mL) was purged with argon and heated at 120° C. for 40 min using microwave irradiation. The reaction mixture was diluted with DCM and purified by column chromatography (Si-PCC, gradient 0-20% MeOH in DCM then C18, gradient 20-50% MeOH in H2O). The resulting residue was loaded onto an Isolute® SCX-2 cartridge which was washed with MeOH and the product eluted with 2M NH3/MeOH. The residue was triturated with Et2O affording 139 as a white solid (16 mg, 51%). LCMS: RT 3.11 min [M+H]+ 467.4. 1H NMR (DMSO, 400 MHz): δ 8.54 (1H, d, J=2.35 Hz), 7.94 (1H, d, J=0.67 Hz), 7.77 (1H, s), 7.36 (1H, dd, J=8.49, 2.37 Hz), 7.02 (1H, d, J=8.48 Hz), 5.92-5.91 (1H, m), 4.55-4.49 (4H, m), 3.06-3.04 (3H, m), 2.30 (2H, t, J=11.23 Hz), 2.08-1.96 (2H, m), 1.65-1.64 (2H, m), 1.58 (6H, d, J=6.65 Hz), 1.08 (9H, s)

Workup

  1. customwas purged with argon
  2. custommicrowave irradiation
  3. additionThe reaction mixture was diluted with DCM
  4. custompurified by column chromatography (Si-PCC, gradient 0-20% MeOH in DCM
  5. washwas washed with MeOH
  6. washthe product eluted with 2M NH3/MeOH
  7. customThe residue was triturated with Et2O affording 139 as a white solid (16 mg, 51%)

Sources & evidence

ORD record
ord-6530fbe663e94622ac71a1fe5dd95bac
Source dataset
uspto-grants-2015_07
Patent number
US09090628B2

Reaction notes

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