Hydrochloric Acid → (2-Methylcyclohexyl)Methanamine

HRID 1584579

Reaktionsgleichung

Reaktionsgleichung von HRID 1584579
[CH2:1]1[C:9]2[C:4](=[CH:5][CH:6]=[CH:7][CH:8]=2)[CH2:3][NH:2]1.Cl.[H][H].[CH2:13]1[C@@H:21]2[C@@H:16]([CH2:17][CH2:18][CH2:19][CH2:20]2)[CH2:15][NH:14]1>[C].[Ru]>[CH2:1]1[C@H:9]2[C@@H:4]([CH2:5][CH2:6][CH2:7][CH2:8]2)[CH2:3][NH:2]1.[CH3:15][CH:16]1[CH2:17][CH2:18][CH2:19][CH2:20][CH:21]1[CH2:13][NH2:14]

Komponenten

7

Edukt 4

HCID 313Hydrochloric AcidHCID 422478IsoindolineHCID 10964494cis-OctahydroisoindoleHCID 178418361HCID 178418361, Verbindung2×

Produkt 2

HCID 21225048(2-Methylcyclohexyl)MethanamineAusbeute 0,4 %HCID 36689195(3aR,7aR)-Octahydro-1H-isoindoleAusbeute 0,3 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 178503044HCID 178503044, VerbindungKatalysator

Versuchsvorschrift

In a 3-liter GL (Glass Lining) autoclave fitted with a electromagnetic stirrer are added 129 g of isoindoline, 545 g of 7.2% hydrochloric acid aqueous solution (pH 4.0) and 26 g of 5% ruthenium-carbon catalyst (50% water-containing). The reaction mixture is subjected to a hydrogen-pressure of 20 kg/cm2 and a temperature of 130° C. After a 2 hour hydrogen introduction, the drop in the rate of the hydrogen-absorption is observed, at this point the introduction of hydrogen is ceased to terminate the reaction. After the termination of reaction, the catalyst is filtered out from the reacted solution. By the result of the capillary chromatographic analysis, the yield of cis-hexahydroisoindoline is 98.3%. In addition, 0.3% of trans-hexahydroisoindoline and 0.4% of 2-methylcyclohexylmethylamine is formed. After cooling the reacted solution, 240 g of 20% sodium hydroxide aqueous solution is added to neutralize, and it is extracted with toluene. After concentrating the organic phase, the residue is purified by distillation to give 128.0 g of cis-hexahydroisoindoline (yield 94.5%).

Aufarbeitung

  1. customIn a 3-liter GL (Glass Lining) autoclave fitted with a electromagnetic stirrer
  2. customa temperature of 130° C
  3. customthe drop in the rate of the hydrogen-absorption
  4. customto terminate
  5. customthe reaction
  6. customAfter the termination of reaction
  7. filtrationthe catalyst is filtered out from the reacted solution
  8. customBy the result of the capillary chromatographic analysis

Quellen und Nachweise

ORD-Eintrag
ord-55e265499b7a48db91d5f4bebec609f5
Quelldatensatz
uspto-grants-1999_08
Patentnummer
US05932744

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