1,2-Ethanediamine, N1-phenyl- → N-(6-Cyano-2,2-dimethyl-3,4-dihydro-2H-1-benzopyran-4-yl)-N'-phenylethylenediamine

HRID 1197694

Reaktionsgleichung

Reaktionsgleichung von HRID 1197694
Br[CH:2]1[C:7]2[CH:8]=[C:9]([C:12]#[N:13])[CH:10]=[CH:11][C:6]=2[O:5][C:4]([CH3:15])([CH3:14])[CH2:3]1.[C:16]1([NH:22][CH2:23][CH2:24][NH2:25])[CH:21]=[CH:20][CH:19]=[CH:18][CH:17]=1.C([O-])(O)=O.[Na+]>CN(C)C=O>[C:12]([C:9]1[CH:10]=[CH:11][C:6]2[O:5][C:4]([CH3:15])([CH3:14])[CH2:3][CH:2]([NH:25][CH2:24][CH2:23][NH:22][C:16]3[CH:21]=[CH:20][CH:19]=[CH:18][CH:17]=3)[C:7]=2[CH:8]=1)#[N:13]

Komponenten

5

Edukt 3

HCID 742701,2-Ethanediamine, N1-phenyl-HCID 516892Sodium BicarbonateHCID 102446284-bromo-6-cyano-3,4-dihydro-2,2-dimethyl-2H-1-benzopyran

Produkt 1

HCID 19373592N-(6-Cyano-2,2-dimethyl-3,4-dihydro-2H-1-benzopyran-4-yl)-N'-phenylethylenediamineAusbeute 409,3 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6228DimethylformamideLösungsmittel

Versuchsvorschrift

A solution of 4-bromo-6-cyano-3,4-dihydro-2,2-dimethyl-2H-1-benzopyran (0.75 g, 2.82 mmole, from Example 8, part B) and N-phenylethylenediamine (8.84 g, 10 eq.) containing NaHCO3 (2.40 g, 5 eq.) in N,N-dimethylformamide (15 ml) was stirred for 48 hours at room temperature. The reaction mixture was partitioned between ethyl acetate and distilled H2O. The organic phase was washed with distilled H2O, saturated NaCl solution, dried over Na2SO4 and evaporated in vacuo to obtain 3.71 g of an orange gum. The crude product was chromatographed on silica eluting with 3:2 hexane/ethyl acetate to obtain 0.36 g (40%) of the title compound as a colorless gum which solidified upon standing. 1H NMR (CDCl3) δ 7.91 (s. 1H), 7.38 (dd, J=2.34 and 8.79 Hz, 1H), 7.19 (m, 2H), 6.79 (d, J=8.21 Hz, 1H), 6.70 (m, 3H), 3.87 (dd, J=5.86 and 11.14 Hz, 1H), 3.26 (m, 2H), 3.10 (m, 1H), 2.86 (m, 1H), 2.20 (dd, J=5.87 and 12.90 Hz, 1H), 1.58 (d, J=12.30 Hz, 1H), 1.45 (s, 3H), 1.27 (s, 3H); 13C NMR (CDCl3) δ 157.63, 148.16, 132.40, 132.09, 129.21, 125.32, 119.56, 118.09, 117.52, 112.97, 102.89, 76.83, 49.24, 44.89, 44.00, 39.25, 29.69, 24.96; MS: (M+H)+ @322.

Aufarbeitung

  1. customThe reaction mixture was partitioned between ethyl acetate
  2. distillationdistilled H2O
  3. washThe organic phase was washed with distilled H2O, saturated NaCl solution
  4. dry with materialdried over Na2SO4
  5. customevaporated in vacuo

Quellen und Nachweise

ORD-Eintrag
ord-0d778f08863d4d5ebf0b69222ab00798
Quelldatensatz
uspto-grants-1994_01
Patentnummer
US05276168

Verknüpfte Notizen

Wird geladen…