Triethylamine → 2-(2-Isopropyl-2H-[1,2,4]triazol-3-yl)-8-[1-(2-methanesulfonyl-ethyl)-azetidin-3-yl]-4,5-dihydro-6-oxa-3-thia-1-aza-benzo[e]azulene

HRID 2385843Notes

Reaction equation

HRID 2385843 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(CC)CC)C.[CH:41]([S:43]([CH3:46])(=[O:45])=[O:44])=[CH2:42]>>[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]([CH2:42][CH2:41][S:43]([CH3:46])(=[O:45])=[O:44])[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

4

Reactant 3

HCID 8471TriethylamineHCID 19354Methyl vinyl sulfoneHCID 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 582040292-(2-Isopropyl-2H-[1,2,4]triazol-3-yl)-8-[1-(2-methanesulfonyl-ethyl)-azetidin-3-yl]-4,5-dihydro-6-oxa-3-thia-1-aza-benzo[e]azuleneYield 68%

Procedure

To a solution 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 (200 mg, 0.42 mmol) in IMS (industrial methylated spirits, 3 mL) was added triethylamine (0.20 mL, 1.47 mmol) and methyl vinyl sulfone (0.09 mL, 1.05 mmol) and the reaction mixture was stirred at RT (room temperature) for 18 hours. The reaction mixture was concentrated in vacuo and the residue purified by flash chromatography (SiO2, 0-5% MeOH in DCM). Freeze-drying from methanol and water gave 320 as a pale yellow solid (135 mg, 68%). LCMS: RT=3.10 min, [M+H]+=474. 1H NMR δ (ppm) (DMSO-d6): 8.35 (1 H, d, J=8.19 Hz), 8.11 (1 H, s), 7.29 (1 H, d, J=8.27 Hz), 7.20 (1 H, s), 5.85-5.76 (1 H, m), 4.41-4.35 (3 H, m), 4.14 (3 H, d, J=59.98 Hz), 3.68 (2 H, s), 3.53-3.41 (3 H, m), 3.13 (3 H, s), 1.55 (6 H, d, J=6.60 Hz). 2 Protons obscured by water peak

Workup

  1. concentrationThe reaction mixture was concentrated in vacuo
  2. customthe residue purified by flash chromatography (SiO2, 0-5% MeOH in DCM)
  3. dry with materialFreeze-drying from methanol and water

Sources & evidence

ORD record
ord-23baef1a74524ab992bc23ea0baed9ef
Source dataset
uspto-grants-2012_09
Patent number
US08263633B2

Reaction notes

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