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1-Ethylpiperazine → 10-[1-(4-Ethylpiperazin-1-yl)ethyl]-9-fluoro-2-(2-isopropyl-5-methyl-1,2,4-triazol-3-yl)-5,6-dihydroimidazo[1,2-d][1,4]benzoxazepine

HRID 1530732
Notes
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Reaction equation

HRID 1530732 reaction equation
Br[CH:2]([C:4]1[C:5]([F:27])=[CH:6][C:7]2[O:16][CH2:15][CH2:14][N:13]3[C:9](=[N:10][C:11]([C:17]4[N:18]([CH:23]([CH3:25])[CH3:24])[N:19]=[C:20]([CH3:22])[N:21]=4)=[CH:12]3)[C:8]=2[CH:26]=1)[CH3:3].[CH2:28]([N:30]1[CH2:35][CH2:34][NH:33][CH2:32][CH2:31]1)[CH3:29].CCN(C(C)C)C(C)C>O1CCOCC1>[CH2:28]([N:30]1[CH2:35][CH2:34][N:33]([CH:2]([C:4]2[C:5]([F:27])=[CH:6][C:7]3[O:16][CH2:15][CH2:14][N:13]4[CH:12]=[C:11]([C:17]5[N:18]([CH:23]([CH3:25])[CH3:24])[N:19]=[C:20]([CH3:22])[N:21]=5)[N:10]=[C:9]4[C:8]=3[CH:26]=2)[CH3:3])[CH2:32][CH2:31]1)[CH3:29]
ParticipantsProcedureWorkupSources & evidenceReaction notes

Participants

5

Reactant 3

HCID 791961-EthylpiperazineHCID 81531DiisopropylethylamineHCID 683131309-(1-bromoethyl)-8-fluoro-2-(2-isopropyl-5-methyl-2H-[1,2,4]triazol-3-yl)-4,5-dihydro-6-oxa-1,3a-diazabenzo[e]azulene

Product 1

HCID 6831291510-[1-(4-Ethylpiperazin-1-yl)ethyl]-9-fluoro-2-(2-isopropyl-5-methyl-1,2,4-triazol-3-yl)-5,6-dihydroimidazo[1,2-d][1,4]benzoxazepineYield 65%

Reagents, catalysts & solvents 1

HCID 312751,4-DioxaneSolvent

Procedure

A solution of 9-(1-bromoethyl)-8-fluoro-2-(2-isopropyl-5-methyl-2H-[1,2,4]triazol-3-yl)-4,5-dihydro-6-oxa-1,3a-diazabenzo[e]azulene (85 mg, 0.20 mmol), N-ethylpiperazine (27 μL, 0.22 mmol) and DIPEA (54 μL, 0.30 mmol) in dioxane (2 mL) was stirred at RT for 24 h. The reaction mixture was concentrated in vacuo and the residue was purified by column chromatography (Si-PPC, gradient 0-10% 2 M NH3/MeOH in DCM) to give 374 (61 mg, 0.13 mmol, 65% over 2 steps) as a white solid. LCMS (Method K): RT 2.74 min [M+H]+ 468.2. 1H NMR (CD3OD, 400 MHz): δ 8.55 (1H, d, J=8.2 Hz), 7.68 (1H, s), 6.76 (1H, d, J=11.1 Hz), 5.83 (1H, sept., J=6.7 Hz), 4.48 (4H, br s), 3.84 (1H, q, J=6.8 Hz), 2.50 (8H, br s), 2.38 (2H, q, J=7.4 Hz), 2.33 (3H, s), 1.53 (3H, d, J=6.7 Hz), 1.52 (3H, d, J=6.7 Hz), 1.40 (3H, d, J=6.8 Hz), 1.03 (3H, t, J=7.4 Hz)

Workup

  1. concentrationThe reaction mixture was concentrated in vacuo
  2. customthe residue was purified by column chromatography (Si-PPC, gradient 0-10% 2 M NH3/MeOH in DCM)

Sources & evidence

ORD record
ord-894c97e7a923409a99fe5bbb27e685f3
Source dataset
uspto-grants-2015_07
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US09090628B2

Reaction notes

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On this pageParticipantsProcedureWorkupSources & evidenceReaction notes