Dicyclohexylcarbodiimide → HCID 53851186, Verbindung

HRID 1589611Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1589611
[C:1]([NH:11][C:12]([CH3:17])([CH3:16])[C:13]([OH:15])=O)([O:3][CH2:4][C:5]1[CH:10]=[CH:9][CH:8]=[CH:7][CH:6]=1)=[O:2].C1(N=C=NC2CCCCC2)CCCCC1.CN(C1C=CC=CN=1)C.[CH3:42][C:43]1([CH3:51])[CH2:47][CH2:46][C:45]([CH3:49])([CH3:48])[CH:44]1[NH2:50]>C(Cl)Cl>[CH3:42][C:43]1([CH3:51])[CH2:47][CH2:46][C:45]([CH3:49])([CH3:48])[CH:44]1[NH:50][C:13](=[O:15])[C:12]([NH:11][C:1]([O:3][CH2:4][C:5]1[CH:6]=[CH:7][CH:8]=[CH:9][CH:10]=1)=[O:2])([CH3:17])[CH3:16]

Komponenten

6

Edukt 4

HCID 10868DicyclohexylcarbodiimideHCID 218852-DimethylaminopyridineHCID 294936N-((Benzyloxy)carbonyl)-2-methylalanineHCID 132479392,2,5,5-Tetramethylcyclopentanamine

Produkt 1

HCID 53851186HCID 53851186, Verbindung

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6344DichloromethaneLösungsmittel2×

Versuchsvorschrift

To a stirred solution of N-Cbz-2-aminoisobutyric acid in dry CH2Cl2 containing dicyclohexylcarbodiimide and dimethylaminopyridine (DMAP), all at 0° C., is added, via an addition funnel, 2,2,5,5-tetramethyl-1-cyclopentyl amine dissolved in CH2Cl2. After stirring for 48 hours, the mixture is filtered, and the filtrate is washed with 5% HCl (1×50 ml), saturated NaHCO3 (1×50 ml), and water (1×50 ml). The organic layer is separated, dried over MgSO4 and is evaporated to yield N-Cbz-2-aminoisobutyric acid 2,2,5,5-tetramethylcyclopentyl amide.

Aufarbeitung

  1. additionall at 0° C., is added, via an addition funnel
  2. filtrationthe mixture is filtered
  3. washthe filtrate is washed with 5% HCl (1×50 ml), saturated NaHCO3 (1×50 ml), and water (1×50 ml)
  4. customThe organic layer is separated
  5. dry with materialdried over MgSO4
  6. customis evaporated

Quellen und Nachweise

ORD-Eintrag
ord-baf1a609a5994d2cade1b2996b3f839f
Quelldatensatz
uspto-grants-1986_02
Patentnummer
US04572799

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