(2S,5R)-tert-butyl 5-(N-(allyloxy)-2-nitrophenylsulfonamido)-2-carbamoyl-3-methyl-5,6-dihydropyridine-1(2H)-carboxylate → (2S,5R)-5-(N-(allyloxy)-2-nitrophenylsulfonamido)-3-methyl-1,2,5,6-tetrahydropyridine-2-carboxamide

HRID 627129

Reaktionsgleichung

Reaktionsgleichung von HRID 627129
[CH2:1]([O:4][N:5]([C@H:18]1[CH2:23][N:22](C(OC(C)(C)C)=O)[C@H:21]([C:31](=[O:33])[NH2:32])[C:20]([CH3:34])=[CH:19]1)[S:6]([C:9]1[CH:14]=[CH:13][CH:12]=[CH:11][C:10]=1[N+:15]([O-:17])=[O:16])(=[O:8])=[O:7])[CH:2]=[CH2:3]>ClCCl.[Br-].[Zn+2].[Br-]>[CH2:1]([O:4][N:5]([C@H:18]1[CH2:23][NH:22][C@H:21]([C:31]([NH2:32])=[O:33])[C:20]([CH3:34])=[CH:19]1)[S:6]([C:9]1[CH:14]=[CH:13][CH:12]=[CH:11][C:10]=1[N+:15]([O-:17])=[O:16])(=[O:8])=[O:7])[CH:2]=[CH2:3]

Komponenten

4

Edukt 1

HCID 89852450(2S,5R)-tert-butyl 5-(N-(allyloxy)-2-nitrophenylsulfonamido)-2-carbamoyl-3-methyl-5,6-dihydropyridine-1(2H)-carboxylate2×

Produkt 1

HCID 89852088(2S,5R)-5-(N-(allyloxy)-2-nitrophenylsulfonamido)-3-methyl-1,2,5,6-tetrahydropyridine-2-carboxamideAusbeute 91 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 10421208Zinc bromideKatalysatorHCID 6344DichloromethaneLösungsmittel2×

Versuchsvorschrift

(2S,5R)-tert-butyl 5-(N-(allyloxy)-2-nitrophenylsulfonamido)-2-carbamoyl-3-methyl-5,6-dihydropyridine-1(2H)-carboxylate (Intermediate 83, 2.785 g, 5.61 mmol) and zinc(II) bromide (2.53 g, 11.22 mmol) was added DCM (10 mL) and stirred at rt overnight. The reaction mixture was diluted with dichloromethane and washed with saturated sodium bicarbonate and brine. The organics were dried over magnesium sulfate, filtered and concentrated to afford the desired product (2.015 g, 91%) as a beige foam.

Aufarbeitung

  1. washwashed with saturated sodium bicarbonate and brine
  2. dry with materialThe organics were dried over magnesium sulfate
  3. filtrationfiltered
  4. concentrationconcentrated

Quellen und Nachweise

ORD-Eintrag
ord-bb8cd7d1b8094c849b4cf50c21b64855
Quelldatensatz
uspto-grants-2016_04
Patentnummer
US09309245B2

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