Ozone → tert-Butyl 4-(6-cyano-1,2,3,4-tetrahydronaphthalen-2-yl)-3-oxopiperazine-1-carboxylate

HRID 1466015Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1466015
O=[O+][O-].[CH2:4]([N:7]([CH2:15][C:16]([O:18]C)=O)[C:8]([O:10][C:11]([CH3:14])([CH3:13])[CH3:12])=[O:9])[CH:5]=C.[NH2:20][CH:21]1[CH2:30][CH2:29][C:28]2[CH:27]=[C:26]([C:31]#[N:32])[CH:25]=[CH:24][C:23]=2[CH2:22]1.C(O[BH-](OC(=O)C)OC(=O)C)(=O)C.[Na+]>C(Cl)Cl>[C:31]([C:26]1[CH:27]=[C:28]2[C:23](=[CH:24][CH:25]=1)[CH2:22][CH:21]([N:20]1[CH2:5][CH2:4][N:7]([C:8]([O:10][C:11]([CH3:12])([CH3:13])[CH3:14])=[O:9])[CH2:15][C:16]1=[O:18])[CH2:30][CH2:29]2)#[N:32]

Komponenten

6

Edukt 4

HCID 24823OzoneHCID 5049666Sodium triacetoxyborohydrideHCID 22243128N-Boc-allylglycine methyl esterHCID 513583406-Amino-5,6,7,8-tetrahydronaphthalene-2-carbonitrile

Produkt 1

HCID 131732668tert-Butyl 4-(6-cyano-1,2,3,4-tetrahydronaphthalen-2-yl)-3-oxopiperazine-1-carboxylate

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6344DichloromethaneLösungsmittel2×

Versuchsvorschrift

Ozone was bubbled into a solution of methyl [allyl(tert-butoxycarbonyl)amino]acetate (3.6 g, 16 mmol) in DCM at −78° C. until it turned pale blue. Nitrogen was then bubbled into the solution to remove excess ozone. When the blue color was gone, 6-amino-5,6,7,8-tetrahydronaphthalene-2-carbonitrile (2.7 g, 16 mmol) and sodium triacetoxyborohydride (20 g, 95 mmol) was added to the reaction, and the mixture was allowed to warm to RT. The reaction was diluted with DCM, washed with aqueous sodium bicarbonate and brine, dried over magnesium sulfate, and purified by preparative TLC to afford the title compound. LC-MS (IE, m/z): 256 [M−Boc+1]+.

Aufarbeitung

  1. customNitrogen was then bubbled into the solution
  2. customto remove excess ozone
  3. washwashed with aqueous sodium bicarbonate and brine
  4. dry with materialdried over magnesium sulfate
  5. custompurified by preparative TLC

Quellen und Nachweise

ORD-Eintrag
ord-0c62d7bb25aa4a75838b4dd9807c69cb
Quelldatensatz
uspto-grants-2015_04
Patentnummer
US08999990B2

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