Methylamine → HCID 13175695, compound

HRID 1980243Notes

Reaction equation

HRID 1980243 reaction equation
[Cl:1][C:2]1[CH:3]=[CH:4][C:5]2[N:11]([CH2:12][CH2:13]Cl)[CH:10]([CH2:15]Cl)[CH2:9][N:8]=[C:7]([C:17]3[O:18][CH:19]=[CH:20][CH:21]=3)[C:6]=2[CH:22]=1.[OH-].[Na+].[CH3:25][NH2:26]>CO.O>[Cl:1][C:2]1[CH:3]=[CH:4][C:5]2[N:11]3[CH2:12][CH2:13][N:26]([CH3:25])[CH2:15][CH:10]3[CH2:9][N:8]=[C:7]([C:17]3[O:18][CH:19]=[CH:20][CH:21]=3)[C:6]=2[CH:22]=1

Participants

6

Reactant 3

HCID 6329MethylamineHCID 14798Sodium HydroxideHCID 13175737HCID 13175737, compound

Product 1

HCID 13175695HCID 13175695, compound

Reagents, catalysts & solvents 2

HCID 887MethanolSolventHCID 962WaterSolvent

Procedure

3.4 g of 7-chloro-1-(β-chloroethyl)-2-chloromethyl-5-(2-furyl)-2,3-dihydro-1H-1,4-benzodiazepine in 100 ml of methanol are left to react with 0.8 g of sodium hydroxide in 1 ml of water and 2.5 g of methylamine at 95° C. in an autoclave for 5 hours. The reaction mixture is then worked up in the customary manner and the reaction product is purified by chromatography on aluminium oxide of activity level II, using methylene chloride/chloroform, and the fractions containing the product of medium polarity are separated off and the 1,2,3,4,4a,5-hexahydro-9-chloro-3-methyl-7-(2-furyl)-pyrazino[1,2-a]-[1,4]benzodiazepine obtained therefrom is dissolved in isopropanol and converted into its salt with alcoholic hydrochloric acid. This salt crystallises from isopropanol as the dihydrochloride hemihydrate with 0.1 mol of isopropanol. Melting point: >240° C., yield: 0.8 g.

Workup

  1. customthe reaction product is purified by chromatography on aluminium oxide of activity level II
  2. additionthe fractions containing the product of medium polarity
  3. customare separated off

Sources & evidence

ORD record
ord-6a379c65ed9b4a1b87a2ef443c7fe8f5
Source dataset
uspto-grants-1985_04
Patent number
US04508716

Reaction notes

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