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Ethyl Acetate → 1-(4-Methylbenzamido)-2-[2-(1,4-dioxa-8-azaspiro[4.5]dec-8-yl)acetylamino]-anthraquinone

HRID 40776
Notes
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Reaction equation

HRID 40776 reaction equation
[CH3:1][C:2]1[CH:31]=[CH:30][C:5]([C:6]([NH:8][C:9]2[C:22]3[C:21](=[O:23])[C:20]4[C:15](=[CH:16][CH:17]=[CH:18][CH:19]=4)[C:14](=[O:24])[C:13]=3[CH:12]=[CH:11][C:10]=2[NH:25][C:26](=[O:29])[CH2:27]Cl)=[O:7])=[CH:4][CH:3]=1.CCN(C(C)C)C(C)C.[O:41]1[C:45]2([CH2:50][CH2:49][NH:48][CH2:47][CH2:46]2)[O:44][CH2:43][CH2:42]1.C(OCC)(=O)C>O1CCCC1.CCO.CCCCCC>[CH3:1][C:2]1[CH:31]=[CH:30][C:5]([C:6]([NH:8][C:9]2[C:22]3[C:21](=[O:23])[C:20]4[C:15](=[CH:16][CH:17]=[CH:18][CH:19]=4)[C:14](=[O:24])[C:13]=3[CH:12]=[CH:11][C:10]=2[NH:25][C:26](=[O:29])[CH2:27][N:48]2[CH2:49][CH2:50][C:45]3([O:44][CH2:43][CH2:42][O:41]3)[CH2:46][CH2:47]2)=[O:7])=[CH:4][CH:3]=1
ParticipantsProcedureWorkupSources & evidenceReaction notes

Participants

8

Reactant 4

HCID 8857Ethyl AcetateHCID 674351,4-Dioxa-8-azaspiro(4.5)decaneHCID 81531DiisopropylethylamineHCID 533741991-(4-Methylbenzamido)-2-(chloroacetamido)-anthraquinone

Product 1

HCID 533746861-(4-Methylbenzamido)-2-[2-(1,4-dioxa-8-azaspiro[4.5]dec-8-yl)acetylamino]-anthraquinoneYield 55%

Reagents, catalysts & solvents

3
HCID 702EthanolSolventHCID 8028TetrahydrofuranSolventHCID 8058HexaneSolvent

Procedure

Compound CC-12 (0.86 g, 2 mmole) was dissolved in anhydrous tetrahydrofuran (30 ml), and to the solution was added successively with DIPEA (1 ml, 6 mmole) and 1,4-dioxa-8-azaspiro[4.5]decane (1.03 ml, 8 mmole) under stirring for 5 to 10 minutes. This mixture was heated under reflux for 16 hours. After the completion of the reaction, the mixture was filtered, and the filtrate was concentrated by reduced pressure concentrator (such as Vacuum Evaporator). The residue was extracted with ethyl acetate for several times. The extract was dried on magnesium sulfate, and concentrated under reduced pressure. The crude product was washed with ethyl acetate/hexane. Finally, the crude product was recrystallized in hot ethanol to obtain a brown compound CC-40. Mol. Wt.: 539.5785 (C31H29N3O6); Rf: 0.34 (ethyl acetate:n-hexane=1:2); Yield: 55%; Mp.: 197-198° C. (EtOH); HRMS (EI) m/z: calcd [M]+, 539.2056 (C31H29N3O6+). Found, 539.2051. 1H-NMR (300 MHz, DMSO-d6) δ (ppm): 1.39 (d, J=5.4 Hz, 8H, —CH2—), 2.43 (s, 3H, —CH3), 3.15 (s, 2H, —CH2N—), 3.77 (s, 4H, —CH2—), 7.41 (d, J=7.8 Hz, 1H, Ar—H), 7.88-7.91 (m, 2H, Ar—H), 8.06 (d, J=8.1 Hz, 2H, Ar—H), 8.10-8.19 (m, 2H, Ar—H), 8.26 (d, J=8.7 Hz, 1H, Ar—H), 8.70 (d, J=8.7 Hz, 1H, Ar—H), 10.03 (s, 1H, Ar—NH—), 10.60 (s, 1H, Ar—NH—); 13C-NMR (75 MHz, DMSO-d6) δ (ppm): 20.88, 33.68, 51.35, 61.29, 63.34, 63.52, 105.58, 125.90, 126.28, 126.32, 126.91, 127.75, 127.86, 128.18, 129.18, 129.40, 130.44, 132.29, 134.13, 134.38, 134.44, 140.32, 142.46, 166.29 (NCO), 169.31 (NCO), 181.44 (CO), 183.81 (CO).

Workup

  1. temperatureThis mixture was heated
  2. temperatureunder reflux for 16 hours
  3. customAfter the completion of the reaction
  4. filtrationthe mixture was filtered
  5. concentrationthe filtrate was concentrated by reduced pressure concentrator (such as Vacuum Evaporator)
  6. extractionThe residue was extracted with ethyl acetate for several times
  7. customThe extract was dried on magnesium sulfate
  8. concentrationconcentrated under reduced pressure
  9. washThe crude product was washed with ethyl acetate/hexane
  10. customFinally, the crude product was recrystallized in hot ethanol
  11. customto obtain a brown compound CC-40

Sources & evidence

ORD record
ord-de36f23045494fbc91d624767e024927
Source dataset
uspto-grants-2013_09
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US08530465B2

Reaction notes

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On this pageParticipantsProcedureWorkupSources & evidenceReaction notes