Diethyl Ether → 3-(7'-Amino-1', 2'-dihydro-2'-oxospiro[cyclohexane-1,3'-[3H]indol]-5'-yl)-5-fluoro-benzonitrile

HRID 990661

Reaktionsgleichung

Reaktionsgleichung von HRID 990661
[N+:1]([C:4]1[CH:5]=[C:6]([C:19]2[CH:20]=[C:21]([CH:24]=[C:25]([F:27])[CH:26]=2)[C:22]#[N:23])[CH:7]=[C:8]2[C:12]=1[NH:11][C:10](=[O:13])[C:9]12[CH2:18][CH2:17][CH2:16][CH2:15][CH2:14]1)([O-])=O.[Sn].CCOCC>C(O)(=O)C.Cl>[NH2:1][C:4]1[CH:5]=[C:6]([C:19]2[CH:20]=[C:21]([CH:24]=[C:25]([F:27])[CH:26]=2)[C:22]#[N:23])[CH:7]=[C:8]2[C:12]=1[NH:11][C:10](=[O:13])[C:9]12[CH2:14][CH2:15][CH2:16][CH2:17][CH2:18]1

Komponenten

6

Edukt 3

HCID 3283Diethyl EtherHCID 5352426Tin atomHCID 220193243-(7'-nitro-1', 2'-dihydro-2'-oxospiro-[cyclohexane-1,3'-[3H]indol]-5'-yl)-5-fluorobenzonitrile

Produkt 1

HCID 220193773-(7'-Amino-1', 2'-dihydro-2'-oxospiro[cyclohexane-1,3'-[3H]indol]-5'-yl)-5-fluoro-benzonitrileAusbeute 52,2 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 176Acetic AcidLösungsmittelHCID 313Hydrochloric AcidLösungsmittel2×

Versuchsvorschrift

To a solution of 3-(7′-nitro-1′,2′-dihydro-2′-oxospiro-[cyclohexane-1,3′-[3H]indol]-5′-yl)-5-fluorobenzonitrile (1.0 eq, 0.16 g, 0.4 mmol) in glacial acetic acid (4 mL) at room temperature was added a solution of tin II chloride dihydrate (0.25 g, 1.1 mmol) in hydrochloric acid (2 mL). The yellow mixture was boiled for 30 min at which point the yellow color disappeared. After cooling to room temperature, 1 N HCl (10 mL) and ether (20 mL) were added. The layers were separated and the aqueous phase was extracted with ether (2×20 mL). The organic layers were combined, washed sequentially with water (2×20 mL), saturated aqueous NaHCO3 (20 mL), and brine (20 mL). The solution was dried over MgSO4, filtered, and concentrated in vacuo. The residue was purified by flash column chromatography on silica gel (eluting with 40% EtOAc/hexane) to give the title compound (70 mg, 50%) as an oil which crystallized upon addition of 10% EtOAc/hexanes, mp 241-3° C. 1H NMR (DMSO-d6; 400 MHz) δ 1.50-1.75 (m, 8H), 1.82-1.95(m, 2H), 4.98 (s, 2H), 6.90 (d, 1H, J=Hz), 7.09 (d, 1H, J=1.5 Hz), 7.75 (m, 2H), 7.90 (‘s’, 1H), 9.96 (bs, 1H). MS ((+)-APCI) m/z 336 [(M+H)+]. Anal. Calcd for C20H18FN3O: C, 71.63; H, 5.41; N, 12.18. Found: C, 71.16; H, 5.58; N, 12.18.

Aufarbeitung

  1. customThe layers were separated
  2. extractionthe aqueous phase was extracted with ether (2×20 mL)
  3. washwashed sequentially with water (2×20 mL), saturated aqueous NaHCO3 (20 mL), and brine (20 mL)
  4. dry with materialThe solution was dried over MgSO4
  5. filtrationfiltered
  6. concentrationconcentrated in vacuo
  7. customThe residue was purified by flash column chromatography on silica gel (eluting with 40% EtOAc/hexane)

Quellen und Nachweise

ORD-Eintrag
ord-5268ad9b606845f290547fcf256b41d6
Quelldatensatz
uspto-grants-2002_10
Patentnummer
US06462032B1

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