Ammonium Chloride → 2'-(2-Aminoethyl)spiro[benzofuran-2(3H),4'(2'H)-isoquinoline] dihydrochloride

HRID 1758528Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1758528
[H-].[Al+3].[Li+].[H-].[H-].[H-].[C:7]([CH2:9][N:10]1[CH2:19][C:18]2([CH2:23][C:22]3[CH:24]=[CH:25][CH:26]=[CH:27][C:21]=3[O:20]2)[C:17]2[C:12](=[CH:13][CH:14]=[CH:15][CH:16]=2)[CH2:11]1)#[N:8].[Cl-:28].[NH4+]>O1CCCC1.CCOCC>[ClH:28].[ClH:28].[NH2:8][CH2:7][CH2:9][N:10]1[CH2:19][C:18]2([CH2:23][C:22]3[CH:24]=[CH:25][CH:26]=[CH:27][C:21]=3[O:20]2)[C:17]2[C:12](=[CH:13][CH:14]=[CH:15][CH:16]=2)[CH2:11]1

Komponenten

6

Edukt 3

HCID 25517Ammonium ChlorideHCID 132645362'-Cyanomethylspiro[benzofuran-2(3H),4'(2'H)-isoquinoline]HCID 21226445Aluminium lithium hydride

Produkt 1

HCID 159174782'-(2-Aminoethyl)spiro[benzofuran-2(3H),4'(2'H)-isoquinoline] dihydrochlorideAusbeute 67,5 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 3283Diethyl EtherLösungsmittelHCID 8028TetrahydrofuranLösungsmittel2×

Versuchsvorschrift

To a stirred suspension of lithium aluminum hydride (5.3 g) in dry tetrahydrofuran (100 ml) at 0°, is added a solution of 2'-cyanomethylspiro[benzofuran-2(3H),4'(2'H)-isoquinoline] (9.5 g) in dry tetrahydrofuran (50 ml). The mixture is heated to reflux for three hours. The mixture is cooled with an ice-bath, diluted with dry ether (300 ml) and saturated ammonium chloride solution (60 ml) is added in small portions over a period of one hour. The organic layer is collected, washed with water (2x) and dried over anhydrous magnesium sulfate. After filtering, the solvents are evaporated to an oil (7.3 g). The oil (3.7 g) is dissolved in ether and converted to dihydrochloride salt. The material is recrystallized twice from methanol/acetone/ether to yield product (3.0 g, 67.5%) as a solid, mp 158° (dec).

Aufarbeitung

  1. temperatureThe mixture is heated
  2. temperatureto reflux for three hours
  3. temperatureThe mixture is cooled with an ice-bath
  4. additionis added in small portions over a period of one hour
  5. customThe organic layer is collected
  6. washwashed with water (2x)
  7. dry with materialdried over anhydrous magnesium sulfate
  8. filtrationAfter filtering
  9. customthe solvents are evaporated to an oil (7.3 g)
  10. dissolutionThe oil (3.7 g) is dissolved in ether
  11. customThe material is recrystallized twice from methanol/acetone/ether

Quellen und Nachweise

ORD-Eintrag
ord-964f192238974e3fbba175efe20cda7e
Quelldatensatz
uspto-grants-1983_02
Patentnummer
US04374137

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