Diisopropylethylamine → 1-(4-((2-Nitro-1H-imidazol-1-yl)methyl)-1H-1,2,3-triazol-1-yl)-3-(tosyloxy)propan-2-yl acetate

HRID 1011461Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1011461
[N+:1]([C:4]1[N:5]([CH2:9][C:10]#[CH:11])[CH:6]=[CH:7][N:8]=1)([O-:3])=[O:2].[C:12]([O:15][CH:16]([CH2:21][O:22][S:23]([C:26]1[CH:32]=[CH:31][C:29]([CH3:30])=[CH:28][CH:27]=1)(=[O:25])=[O:24])[CH2:17][N:18]=[N+:19]=[N-:20])(=[O:14])[CH3:13].CCN(C(C)C)C(C)C>C1COCC1.[Cu]I>[C:12]([O:15][CH:16]([CH2:21][O:22][S:23]([C:26]1[CH:32]=[CH:31][C:29]([CH3:30])=[CH:28][CH:27]=1)(=[O:25])=[O:24])[CH2:17][N:18]1[CH:11]=[C:10]([CH2:9][N:5]2[CH:6]=[CH:7][N:8]=[C:4]2[N+:1]([O-:3])=[O:2])[N:20]=[N:19]1)(=[O:14])[CH3:13]

Komponenten

6

Edukt 3

HCID 81531DiisopropylethylamineHCID 546751432-Nitro-1-(prop-2-ynyl)-1H-imidazoleHCID 575402081-Azido-3-(tosyloxy)propan-2-yl acetate

Produkt 1

HCID 595110471-(4-((2-Nitro-1H-imidazol-1-yl)methyl)-1H-1,2,3-triazol-1-yl)-3-(tosyloxy)propan-2-yl acetateAusbeute 81,6 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 24350Copper(1+) iodide; Copper(I) iodide; Cuprous iodide; Cuprous iodide (CuI)KatalysatorHCID 8028TetrahydrofuranLösungsmittel

Versuchsvorschrift

To a solution of 2-nitro-1-(prop-2-ynyl)-1H-imidazole (0.2 gm, 1.32 mmol) and 1-azido-3-(tosyloxy)propan-2-yl acetate (0.41 gm, 1.32 mmol) in THF (2.5 mL), was treated with CuI (0.025 gm, 0.132 mmol) and DIPEA (0.3 mL, 1.46 mmol) at room temperature. After stirring the reaction mixture for overnight, silica was added, solvent evaporated under reduced pressure and purified by chromatography on silica gel (MeOH/CH2Cl2, 1/10) to give the 1-(4-((2-nitro-1H-imidazol-1-yl)methyl)-1H-1,2,3-triazol-1-yl)-3-(tosyloxy)propan-2-yl acetate (0.5 gm, 81%) as white solid. 1H NMR (CDCl3, 400 MHz) δ: 7.76-7.78 (m, 3H), 7.35-7.39 (m, 3H), 7.15 (br, 1H), 5.68 (d, J=5.6 Hz, 2H), 5.27-5.32 (m, 1H), 4.56-4.67 (m, 2H), 4.19 (dd, J=4.0, 11.2 Hz, 1H), 4.08 (dd, J=4.0, 11.2 Hz, 1H), 2.46 (s, 3H), 1.97 (s, 3H); Mass Spec (lo-res): Calc'd for C18H20N6O7S: 464.11; found: 465.1 (M+H+).

Aufarbeitung

  1. additionsilica was added
  2. customsolvent evaporated under reduced pressure
  3. custompurified by chromatography on silica gel (MeOH/CH2Cl2, 1/10)

Quellen und Nachweise

ORD-Eintrag
ord-bcedfeb358c8402e982c3c6a53674f12
Quelldatensatz
uspto-grants-2011_07
Patentnummer
US07977361B2

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