Isobutylene oxide → 1-{3-[2-(2-Isopropyl-2H-[1,2,4]triazol-3-yl)-4,5-dihydro-6-oxa-3-thia-1-aza-benzo[e]azulen-8-yl]-azetidin-1-yl}-2-methyl-propan-2-ol

HRID 708159Notes

Reaction equation

HRID 708159 reaction equation
OC(C(F)(F)F)=O.[NH:8]1[CH2:11][CH:10]([C:12]2[CH:33]=[CH:32][C:15]3[C:16]4[N:17]=[C:18]([C:24]5[N:25]([CH:29]([CH3:31])[CH3:30])[N:26]=[CH:27][N:28]=5)[S:19][C:20]=4[CH2:21][CH2:22][O:23][C:14]=3[CH:13]=2)[CH2:9]1.C(N(C(C)C)CC)(C)C.[O:43]1[C:45]([CH3:47])([CH3:46])[CH2:44]1>CO>[CH:29]([N:25]1[C:24]([C:18]2[S:19][C:20]3[CH2:21][CH2:22][O:23][C:14]4[CH:13]=[C:12]([CH:10]5[CH2:11][N:8]([CH2:44][C:45]([CH3:47])([OH:43])[CH3:46])[CH2:9]5)[CH:33]=[CH:32][C:15]=4[C:16]=3[N:17]=2)=[N:28][CH:27]=[N:26]1)([CH3:31])[CH3:30]

Participants

5

Reactant 3

HCID 11208Isobutylene oxideHCID 81531DiisopropylethylamineHCID 866523168-azetidin-3-yl-2-(2-isopropyl-2H-[1,2,4]triazol-3-yl)-4,5-dihydro-6-oxa-3-thia-1-aza-benzo[e]azulene TFA salt

Product 1

HCID 582038081-{3-[2-(2-Isopropyl-2H-[1,2,4]triazol-3-yl)-4,5-dihydro-6-oxa-3-thia-1-aza-benzo[e]azulen-8-yl]-azetidin-1-yl}-2-methyl-propan-2-olYield 38.1%

Reagents, catalysts & solvents 1

HCID 887MethanolSolvent

Procedure

To a mixture of 8-azetidin-3-yl-2-(2-isopropyl-2H-[1,2,4]triazol-3-yl)-4,5-dihydro-6-oxa-3-thia-1-aza-benzo[e]azulene TFA salt 235 (250 mg, 0.52 mmol) in MeOH (3 mL) was added diisopropylethylamine (110 μL, 0.62 mmol) followed by 1,2-epoxy-2-methylpropane (230 μL, 2.6 mmol) and the reaction mixture was stirred at RT for 18 hours. The reaction mixture was concentrated in vacuo and the residue purified by flash chromatography (SiO2, 0-7.5% MeOH in DCM) to give a solid that was recrystallised from heptane to give 421 (87 mg, 38%). LCMS: RT=7.41 min, [M+H]+=440. 1H NMR δ (ppm) (DMSO-d6): 8.26 (1H, d, J=8.17 Hz), 8.06 (1H, d, J=0.59 Hz), 7.16 (1H, dd, J=8.23, 1.81 Hz), 7.00 (1H, d, J=1.76 Hz), 5.83-5.75 (1H, m), 4.32 (2H, t, J=5.03 Hz), 4.00 (1H, s), 3.65 (2H, t, J=6.98 Hz), 3.61-3.51 (1H, m), 3.39 (2H, t, J=5.08 Hz), 3.14 (2H, t, J=6.52 Hz), 2.32 (2H, s), 1.51 (6H, d, J=6.59 Hz), 1.03 (6H, s)

Workup

  1. concentrationThe reaction mixture was concentrated in vacuo
  2. customthe residue purified by flash chromatography (SiO2, 0-7.5% MeOH in DCM)
  3. customto give a solid
  4. customthat was recrystallised from heptane

Sources & evidence

ORD record
ord-16d0a5a1b41e4710bc0c70e9a2e298b3
Source dataset
uspto-grants-2015_11
Patent number
US09175009B2

Reaction notes

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