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1,4-Dioxane hydrochloride → 2-{3-[2-(2-Isopropyl-2H-[1,2,4]triazol-3-yl)-4,5-dihydro-6-oxa-3-thia-1-aza-benzo[e]azulen-9-yl]-azetidin-1-yl}-ethanol

HRID 2385898
Notes
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Reaction equation

HRID 2385898 reaction equation
[CH:1]([N:4]1[C:8]([C:9]2[S:10][C:11]3[CH2:12][CH2:13][O:14][C:15]4[CH:22]=[CH:21][C:20]([CH:23]5[CH2:26][N:25]([CH2:27][CH2:28][O:29]C6CCCCO6)[CH2:24]5)=[CH:19][C:16]=4[C:17]=3[N:18]=2)=[N:7][CH:6]=[N:5]1)([CH3:3])[CH3:2].Cl.O1CCOCC1>CO.C(Cl)Cl>[CH:1]([N:4]1[C:8]([C:9]2[S:10][C:11]3[CH2:12][CH2:13][O:14][C:15]4[CH:22]=[CH:21][C:20]([CH:23]5[CH2:24][N:25]([CH2:27][CH2:28][OH:29])[CH2:26]5)=[CH:19][C:16]=4[C:17]=3[N:18]=2)=[N:7][CH:6]=[N:5]1)([CH3:3])[CH3:2]
ParticipantsProcedureWorkupSources & evidenceReaction notes

Participants

5

Reactant 2

HCID 204431481,4-Dioxane hydrochlorideHCID 582039862-(2-Isopropyl-2H-[1,2,4]triazol-3-yl)-9-{1-[2-(tetrahydro-pyran-2-yloxy)-ethyl]-azetidin-3-yl}-4,5-dihydro-6-oxa-3-thia-1-aza-benzo[e]azulene

Product 1

HCID 582041282-{3-[2-(2-Isopropyl-2H-[1,2,4]triazol-3-yl)-4,5-dihydro-6-oxa-3-thia-1-aza-benzo[e]azulen-9-yl]-azetidin-1-yl}-ethanolYield 32%

Reagents, catalysts & solvents 2

HCID 887Methanol
Solvent
HCID 6344DichloromethaneSolvent

Procedure

A solution of 2-(2-isopropyl-2H-[1,2,4]triazol-3-yl)-9-{1-[2-(tetrahydro-pyran-2-yloxy)-ethyl]-azetidin-3-yl}-4,5-dihydro-6-oxa-3-thia-1-aza-benzo[e]azulene (110 mg, 0.22 mmol) in MeOH (3 mL) and DCM (3 mL) was treated with 4N HCl/dioxan (2 mL, 8 mmol) and the mixture left to stand for 3 hours then concentrated in vacuo. The resultant residue was triturated with diethyl ether and dried under vacuum. Further purification by flash chromatography (SiO2, 0-10% 2N NH3/MeOH in DCM) gave 376 (29 mg, 32%). LCMS: RT=6.96 min, [M+H]+=412. 1H NMR δ (ppm) (CDCl3): 8.31 (1 H, d, J=2.34 Hz), 7.90 (1 H, s), 7.15 (1 H, dd, J=8.27, 2.35 Hz), 7.01 (1 H, d, J=8.26 Hz), 5.94-5.84 (1 H, m), 4.40-4.34 (2 H, m), 3.89-3.83 (2 H, m), 3.84-3.72 (1 H, m), 3.59-3.54 (2 H, m), 3.41-3.36 (2 H, m), 3.28-3.21 (2 H, m), 2.71-2.66 (2 H, m), 1.62 (6 H, d, J=6.65 Hz). 1 Exchangeable proton not seen

Workup

  1. waitthe mixture left
  2. concentrationthen concentrated in vacuo
  3. customThe resultant residue was triturated with diethyl ether
  4. customdried under vacuum
  5. customFurther purification by flash chromatography (SiO2, 0-10% 2N NH3/MeOH in DCM)

Sources & evidence

ORD record
ord-811418b582f74f4d8b08853302f4c554
Source dataset
uspto-grants-2012_09
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US08263633B2

Reaction notes

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On this pageParticipantsProcedureWorkupSources & evidenceReaction notes