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Benzaldehyde → 4-Benzyl-2,2-dimethyl-piperazine-1-carboxylic acid tert-butyl ester

HRID 2279171
Notizen
Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 2279171
[C:1]([O:5][C:6]([N:8]1[CH2:13][CH2:12][NH:11][CH2:10][C:9]1([CH3:15])[CH3:14])=[O:7])([CH3:4])([CH3:3])[CH3:2].[CH:16](=O)[C:17]1[CH:22]=[CH:21][CH:20]=[CH:19][CH:18]=1.C(O[BH-](OC(=O)C)OC(=O)C)(=O)C.[Na+].O>C(Cl)Cl>[C:1]([O:5][C:6]([N:8]1[CH2:13][CH2:12][N:11]([CH2:16][C:17]2[CH:22]=[CH:21][CH:20]=[CH:19][CH:18]=2)[CH2:10][C:9]1([CH3:15])[CH3:14])=[O:7])([CH3:4])([CH3:2])[CH3:3]
KomponentenVersuchsvorschriftAufarbeitungQuellen und NachweiseNotizen zur Reaktion

Komponenten

6

Edukt 4

HCID 240BenzaldehydeHCID 962WaterHCID 5049666Sodium triacetoxyborohydrideHCID 299224001,1-Dimethylethyl 2,2-dimethyl-1-piperazinecarboxylate

Produkt 1

HCID 866803274-Benzyl-2,2-dimethyl-piperazine-1-carboxylic acid tert-butyl esterAusbeute 100 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6344
Dichloromethane
Lösungsmittel

Versuchsvorschrift

To a solution of 2.20 g of 2,2-dimethyl-piperazine-1-carboxylic acid tert-butyl ester in 50 ml DCM was added 1.15 ml of benzaldehyde, followed by the addition of 2.61 g of sodium triacetoxyborohydride in small portions. The reaction was stirred at r.t. overnight. To the reaction was then added water. The layers were separated and the organic layer was washed with brine, dried over Na2SO4, filtered and concentrated in vacuo. 3.30 g (100%) of the title compound were obtained and used without further purification.

Aufarbeitung

  1. customThe layers were separated
  2. washthe organic layer was washed with brine
  3. dry with materialdried over Na2SO4
  4. filtrationfiltered
  5. concentrationconcentrated in vacuo

Quellen und Nachweise

ORD-Eintrag
ord-2efd5cf7f6684ec1a88f27f22fc59d13
Quelldatensatz
uspto-grants-2015_09
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US09133181B2

Notizen zur Reaktion

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