Methyl 2-(8-(nitromethyl)-1,4-dioxaspiro[4.5]decan-8-yl)acetate → 1,4-Dioxa-10-azadispiro[4.2.4^{8}.2^{5}]tetradecan-11-one

HRID 1694520Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1694520
C[O:2][C:3](=O)[CH2:4][C:5]1([CH2:15][N+:16]([O-])=O)[CH2:14][CH2:13][C:8]2([O:12][CH2:11][CH2:10][O:9]2)[CH2:7][CH2:6]1>CO.[Ni]>[O:12]1[C:8]2([CH2:13][CH2:14][C:5]3([CH2:4][C:3](=[O:2])[NH:16][CH2:15]3)[CH2:6][CH2:7]2)[O:9][CH2:10][CH2:11]1

Komponenten

4

Edukt 1

HCID 57795518Methyl 2-(8-(nitromethyl)-1,4-dioxaspiro[4.5]decan-8-yl)acetate

Produkt 1

HCID 577954141,4-Dioxa-10-azadispiro[4.2.4^{8}.2^{5}]tetradecan-11-oneAusbeute 96 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 935NickelKatalysatorHCID 887MethanolLösungsmittel

Versuchsvorschrift

A solution of (8-nitromethyl-1,4-dioxa-spiro[4.5]dec-8-yl)-acetic acid methyl ester (5.34 g, 19.5 mmol) in 35 mL of methanol was purged with nitrogen. A portion of about 430 mg of Raney 2800 nickel was added. The reaction mixture was purged with hydrogen and a positive pressure of hydrogen was maintained overnight using a balloon. Then, the final mixture was purged with nitrogen and filtered through a pad of celite washing with methanol. The filtrate was concentrated to afford 1,4-dioxa-10-aza-dispiro[4.2.4.2]tetradecan-11-one (3.95 g, 96%) as a white solid.

Aufarbeitung

  1. customThe reaction mixture was purged with hydrogen
  2. temperaturea positive pressure of hydrogen was maintained overnight
  3. customThen, the final mixture was purged with nitrogen
  4. filtrationfiltered through a pad of celite
  5. washwashing with methanol
  6. concentrationThe filtrate was concentrated

Quellen und Nachweise

ORD-Eintrag
ord-4033ab7ac1d54c689a5d41bb60034305
Quelldatensatz
uspto-grants-2012_04
Patentnummer
US08158675B2

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