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Hydrochloric Acid → 4-[[(5,6,7,8-Tetrahydro-5,5-dimethyl-8-oxo-2-naphthalenyl)amino]carbonyl]benzoic acid methyl ester

HRID 265427
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Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 265427
[C:1]([O:12][CH3:13])(=[O:11])[C:2]1[CH:10]=[CH:9][C:5]([C:6]([O-:8])=O)=[CH:4][CH:3]=1.[CH3:14][C:15]1([CH3:27])[C:24]2[C:19](=[CH:20][C:21]([NH2:25])=[CH:22][CH:23]=2)[C:18](=[O:26])[CH2:17][CH2:16]1.Cl>S(Cl)(Cl)=O.CN(C)C=O>[CH3:14][C:15]1([CH3:27])[CH2:16][CH2:17][C:18](=[O:26])[C:19]2[CH:20]=[C:21]([NH:25][C:6]([C:5]3[CH:4]=[CH:3][C:2]([C:1]([O:12][CH3:13])=[O:11])=[CH:10][CH:9]=3)=[O:8])[CH:22]=[CH:23][C:24]1=2
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Komponenten

6

Edukt 3

HCID 313Hydrochloric AcidHCID 36144541,4-Benzenedicarboxylic acid, methyl esterHCID 154628417-Amino-4,4-dimethyl-3,4-dihydronaphthalen-1(2H)-one

Produkt 1

HCID 537129964-[[(5,6,7,8-Tetrahydro-5,5-dimethyl-8-oxo-2-naphthalenyl)amino]carbonyl]benzoic acid methyl ester

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 6228Dimethylformamide
Katalysator
HCID 24386Thionyl ChlorideLösungsmittel

Versuchsvorschrift

A solution of monomethyl terephthalate (VIIIa) (2.86 g, 15.89 mmoles) in thionylchloride (50 mL) with 2 drops of N,N-dimethylformamide was allowed to stir at room temperature. The mixture became homogeneous within 30 minutes and was then concentrated in vacuo. The residue was then taken up in 30 mL of anhydrous pyridine and treated with 4,4-dimethyl-7-amino-1-tetralone (3.00 g, 15.9 mmoles). After 16 hours at room temperature 1N HCl was added to the mixture. It was extracted with ethyl acetate, washed with 1N HCl (4×200 mL) and washed with saturated sodium bicarbonate (2×200 mL). The organic phase was then separated, dried over magnesium sulfate, and concentrated in vacuo to give 5.07 g (Y: 91%) of the title compound; 1H-NMR (CDCl3): δ 8.27 (dd, J=8.7, 2.5 Hz, 1H), 8.19 (bs, 1H), 8.14 (d, J=8.4 Hz, 2H), 7.95 (d, J=8.4 Hz, 2H), 7.91 (d, J=2.5 Hz, 1H), 7.46 (d, J=8.7 Hz, 1H), 3.94 (s, 3H), 2.70 (t, J=7.0 Hz, 3H), 2.00 (t, J=7.0 Hz, 3H), 1.38 (s, 6H); MS (DCI) m/e: 352 (MH+).

Aufarbeitung

  1. concentrationwas then concentrated in vacuo
  2. extractionIt was extracted with ethyl acetate
  3. washwashed with 1N HCl (4×200 mL)
  4. washwashed with saturated sodium bicarbonate (2×200 mL)
  5. customThe organic phase was then separated
  6. dry with materialdried over magnesium sulfate
  7. concentrationconcentrated in vacuo

Quellen und Nachweise

ORD-Eintrag
ord-1cc84077bffd4189b493272dd357df63
Quelldatensatz
uspto-grants-1997_07
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US05648385

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