1-(2-Hydroxyethyl)piperazine → 4-Chloro-2-{2-[4-(2-hydroxy-ethyl)-piperazin-1-yl]-ethylamino}-6-methyl-10,10-dioxo-10,11-dihydro-5-oxa-10lambda*6*-thia-dibenzo[a,d]cycloheptene-8-carboxylic acid methyl ester

HRID 1172484Notes

Reaction equation

HRID 1172484 reaction equation
[N:1]1([CH2:7][CH2:8][OH:9])[CH2:6][CH2:5][NH:4][CH2:3][CH2:2]1.[CH3:10][O:11][C:12]([C:14]1[CH:15]=[C:16]([CH3:36])[C:17]2[O:23][C:22]3[C:24]([Cl:32])=[CH:25][C:26]([NH:28][CH2:29][CH2:30]Cl)=[CH:27][C:21]=3[CH2:20][S:19](=[O:34])(=[O:33])[C:18]=2[CH:35]=1)=[O:13]>CN(C=O)C>[CH3:10][O:11][C:12]([C:14]1[CH:15]=[C:16]([CH3:36])[C:17]2[O:23][C:22]3[C:24]([Cl:32])=[CH:25][C:26]([NH:28][CH2:29][CH2:30][N:4]4[CH2:5][CH2:6][N:1]([CH2:7][CH2:8][OH:9])[CH2:2][CH2:3]4)=[CH:27][C:21]=3[CH2:20][S:19](=[O:33])(=[O:34])[C:18]=2[CH:35]=1)=[O:13]

Participants

4

Reactant 2

HCID 76771-(2-Hydroxyethyl)piperazineHCID 1317284464-Chloro-2-(2-chloro-ethylamino)-6-methyl-10,10-dioxo-10,11-dihydro-5-oxa-10lambda*6*-thia-dibenzo[a,d]-cycloheptene-8-carboxylic acid methyl ester

Product 1

HCID 1317284554-Chloro-2-{2-[4-(2-hydroxy-ethyl)-piperazin-1-yl]-ethylamino}-6-methyl-10,10-dioxo-10,11-dihydro-5-oxa-10lambda*6*-thia-dibenzo[a,d]cycloheptene-8-carboxylic acid methyl ester

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Conditions

Temperature
110 °C

Procedure

2-Piperazin-1-yl-ethanol (0.227 g, 1.74 mmol) was added with stirring to a solution of Example 56k (0.5 g, 1.16 mmol) in DMF (10 mL) in an atmosphere of nitrogen. The reaction mixture was stirred at 110° C. for 6 h, concentrated, treated with chilled water and extracted with n-butanol. The organic layer was washed with water, brine, dried, concentrated and purified using flash chromatography (silica gel, methanol/chloroform) to obtain the title compound as an off-white solid. Yield: 0.521 g, (85.69%); 1H NMR (DMSO-d6): δ 2.50 (s, 3H, CH3), 3.10 (t, 4H, 2CH2), 3.70 (t, 10H, 5CH2), 3.90 (s, 3H, OCH3), 4.40 (s, 2H, CH2), 5.20 (s, 2H, CH2), 6.10 (s, 1H, Ar), 6.80-6.85 (m, 2H, Ar), 8.10 (m, 2H, Ar); MS: m/e (ES+) 551 (M+).

Workup

  1. concentrationconcentrated
  2. additiontreated with chilled water
  3. extractionextracted with n-butanol
  4. washThe organic layer was washed with water, brine
  5. customdried
  6. concentrationconcentrated
  7. custompurified

Sources & evidence

ORD record
ord-e8d16749819a42c0a545de1e18a20c3b
Source dataset
uspto-grants-2010_11
Patent number
US07834001B2

Reaction notes

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