Triphenylphosphine → Tert-butyl 4-{3-[(4-chloro-6-methoxyquinazolin-7-yl)oxy]propyl}piperazine-1-carboxylate

HRID 2068100Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 2068100
[Cl:1][C:2]1[C:11]2[C:6](=[CH:7][C:8]([OH:14])=[C:9]([O:12][CH3:13])[CH:10]=2)[N:5]=[CH:4][N:3]=1.O[CH2:16][CH2:17][CH2:18][N:19]1[CH2:24][CH2:23][N:22]([C:25]([O:27][C:28]([CH3:31])([CH3:30])[CH3:29])=[O:26])[CH2:21][CH2:20]1.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.N(C(OC(C)C)=O)=NC(OC(C)C)=O>ClCCl>[Cl:1][C:2]1[C:11]2[C:6](=[CH:7][C:8]([O:14][CH2:16][CH2:17][CH2:18][N:19]3[CH2:24][CH2:23][N:22]([C:25]([O:27][C:28]([CH3:29])([CH3:31])[CH3:30])=[O:26])[CH2:21][CH2:20]3)=[C:9]([O:12][CH3:13])[CH:10]=2)[N:5]=[CH:4][N:3]=1

Komponenten

6

Edukt 4

HCID 11776TriphenylphosphineHCID 75555Diisopropyl diazene-1,2-dicarboxylateHCID 162178001-Boc-4-(3-hydroxypropyl)piperazineHCID 1357422514-Chloro-6-methoxyquinazolin-7-ol

Produkt 1

HCID 86597573Tert-butyl 4-{3-[(4-chloro-6-methoxyquinazolin-7-yl)oxy]propyl}piperazine-1-carboxylateAusbeute 8.582,6 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6344DichloromethaneLösungsmittel

Versuchsvorschrift

The starting material was prepared as follows 4-Chloro-7-hydroxy-6-methoxyquinazoline (1.7 g, 0.08 mmol), (prepared as described for the starting material in Example 4), tert-butyl 4-(3-hydroxypropyl)piperazine-1-carboxylate (20.17 g, 8.89 mmol), (prepared as described for the starting material in Example 15), and triphenylphosphine (2.97 g, 11.3 mmol) were added to dichloromethane (42.5 ml). Diisopropyl azodicarboxylate (1.91 ml, 9.70 mmol) was added and the reaction mixture stirred at ambient temperature for 1.5 hours and then concentrated under reduced pressure. The residue was purified by column chromatography eluting with methylene chloride/methanol (95/5 followed by 92/8) to give the product containing a single impurity. A second column chromatography eluting with methylene chloride/methanol (saturated with ammonia) (96/4) gave tert-butyl 4-{3-[(4-chloro-6-methoxyquinazolin-7-yl)oxy]propyl}piperazine-1-carboxylate (3.0 g, 99%) as a white solid.

Aufarbeitung

  1. customThe starting material was prepared
  2. custom(prepared
  3. custom(prepared
  4. concentrationconcentrated under reduced pressure
  5. customThe residue was purified by column chromatography
  6. washeluting with methylene chloride/methanol (95/5 followed by 92/8)
  7. customto give the product
  8. additioncontaining a single impurity
  9. washA second column chromatography eluting with methylene chloride/methanol (saturated with ammonia) (96/4)

Quellen und Nachweise

ORD-Eintrag
ord-0aa3739ef6434ab58ddf58ccf3b2bcc6
Quelldatensatz
uspto-grants-2012_10
Patentnummer
US08293902B2

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